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HI-6110
November 2006
MIL-STD-1553 / MIL-STD-1760 BC / RT / MT Message Processor
FEATURES
* * * * * * * Monolithic CMOS technology 3.3V operation Exceptionally low power On-chip message buffering Selectable master clock frequency Dual differential 1553 bus transceivers Bus Controller / Remote Terminal / Monitor Terminal operating modes * Compliant to MIL-STD-1553B Notice 2 and MIL-STD-1760 Stores Management
GENERAL DESCRIPTION
The HI-6110 is a CMOS integrated circuit implementing the MIL-STD-1553 (1553) data communications protocol between a host processor and a dual redundant 1553 data bus. The single chip architecture has a digital section containing all necessary logic and memory to process and store the command and data words for one complete 1553 message. The analog section includes dual transceivers coupled to the 1553 buses through external current mode transformers. The device is available in an industry standard 64-pin 9 mm square LPCC package, making it the smallest dual redundant 1553 interface product on the market. The HI-6110 may be configured as a Bus Controller (BC), a Remote Terminal (RT), a Monitor Terminal (MT), or a Monitor Terminal with assigned RT address. 16-bit registers store incoming and outgoing Command, Status and Data words. Using two 32-word data FIFOs, the HI-6110 can store the maximum number of 1553 words occurring in any message. For messages with transmitted data words, data may be written in advance or on-the-fly. Received data can be retrieved on-the-fly or all at once after the Valid Message flag is asserted. BC message sequences are initiated by a rising edge on the BCSTART input, or a 0 to 1 transition at the BCSTART bit in the Control Register. All RT command responses are automatically initiated after a valid Command Word is received. Each bus has a dedicated Manchester encoder and analog transformer driver. Each driver dissipates less than 200 mW of on-chip power at 100% duty cycle. Each bus receiver has a dedicated Manchester decoder. In BC mode, a RCV signal indicates when valid 1553 words are received. In RT/MT modes, RCV indicates a valid command received, while the 1553 command decoder updates a Message register so the external controller can identify command type and respond appropriately. Guaranteed by design, the HI-6110 cannot generate messages exceeding 660uS, the duration of a Command or Status Word plus 32 contiguous data words. The external host controller reads and writes a simplified register structure in the HI-6110 over a 16-bit parallel bus. The system designer has flexibility over many aspects of configuration. Control and status monitoring can be done in hardware (by reading/writing control pins) or in software (by reading/writing register bits).
(DS6110 Rev. F)
APPLICATIONS
* * * * * * *
MIL-STD-1553 Terminals Flight Control and Monitoring ECCM Interfaces Stores Management Test Equipment Sensor Interfaces Instrumentation
PIN CONFIGURATION (Top View)
52 - STR 51 - VDDLOG 50 - RTAP 49 - RTA4 48 - RTA3 47 - RTA2 46 - RTA1 45 - RTA0 44 - RTMODE 43 - BCMODE 42 - RCVA 41 - TXINHA 40 - BUSA
R/W - 1 CS - 2 D0 - 3 D1 - 4 D2 - 5 D3 - 6 D4 - 7 D5 - 8 D6 - 9 D7 - 10 D8 - 11 D9 - 12 D10 - 13
HI-6110PQI & HI-6110PQT
39 - VDDA 38 - BUSA 37 - BUSB 36 - VDDB 35 - BUSB 34 - TXINHB 33 - RCVB 32 - FFEMPTY 31 - RF0 / RCVCMDA 30 - RF1 / RCVCMDB 29 - RFLAG 28 - VALMESS 27 - ERROR
52 Pin Plastic Quad Flat Pack (PQFP)
See page 35 for 64-Pin LPCC Pin Configuration
HOLT INTEGRATED CIRCUITS www.holtic.com
D11 - 14 D12 - 15 D13 - 16 D14 - 17 D15 - 18 RA2 - 19 RA1 - 20 RA0 - 21 BCSTART - 22 RA3 - 23 CLK - 24 GND - 25 MR - 26
11/06
HI-6110
PIN DESCRIPTIONS
SIGNAL
STR R/W CS D0 - D15 RA0 - RA3 BCSTART
FUNCTION
INPUT INPUT INPUT I/O INPUTS INPUT
DESCRIPTION
During I/O operations, data is latched on rising edge. (12K ohm pull-up resistor) Device register access, READ = 1, WRITE = 0. (12K ohm pull-up resistor) Chip Select for register reads and writes, active low. (12K ohm pull-down resistor) Data bus signals. (12K ohm pull-down resistors) Register access address, inputs are ORed with corresponding Control register bits. (12K ohm pull-down resistors) Message starts on rising edge when in BC mode. Input is ORed with a corresponding Control register bit, where a 0 to 1 transition will also trigger message start. (This input has a 12K ohm pull-down resistor.) System Clock. (12K ohm pull-down resistor) Power supply Ground, 0V. Master Reset, active high. Clears all data FIFOs and all registers except the Control, Transmit Status Word and Transmit Mode Data Word registers. This input is ORed with a corresponding Control register bit. (12K ohm pull-down resistor) ERROR goes high when a message error is detected. In BC mode, ERROR resets when BCSTART is asserted to begin the next message. For RT and MT modes, ERROR resets automatically after 3 to 4uS. This output signal mirrors a corresponding Status register bit. Goes high at the end of a valid message sequence. This output signal mirrors a corresponding Status register bit. When low, data is available in the receive data FIFO for the active bus. This output signal mirrors a corresponding Status register bit. Flag for register writes of received message words other than Data words. In BC mode: Goes low when a Status Word register is written. In RT or MT mode: Goes low when either a Command word, Status word, or Mode data word register is received and written in a register. This output mirrors a corresponding Status register bit. RF0 function: If a "1" when reading Bus A Word or Bus B Word registers, the stored word had data sync. RCVCMDA function: In RT mode or MT mode, RCVCMDA goes high when a valid receive command has been decoded on Bus A. This output mirrors a corresponding Status register bit. RF1 function: If a "1" when reading Bus A Word or Bus B Word registers, the stored word had command sync. RCVCMDB function: In RT mode or MT mode, RCVCMDB goes high when a valid receive command has been decoded on Bus B. This output mirrors a corresponding Status register bit. Receive A and Receive B flags: In BC mode, these signals go high when any valid word is received on Bus A or Bus B. In RT or MT mode, these signals go high when a valid command is received on Bus A or Bus B. For valid RT-to-RT only, RCV goes high after command word pair. These output signals mirror two corresponding Status register bits. Logic one disables the Bus A transmitter. (12K ohm pull-up resistor) Logic one disables the Bus B transmitter. (12K ohm pull-up resistor) Positive and negative polarity of 1553 signals for Buses A and B. These signal pairs connect the analog transceivers to the external transformer. Selects operating mode. This input signal is ORed with a corresponding Control register bit. (12K ohm pull-up resistor) Selects operating mode. This input signal is ORed with a corresponding Control register bit. (12K ohm pull-down resistor) Remote Terminal address inputs, for RT mode. (12K ohm pull-up resistors) This input sets Remote Terminal address parity, odd. (12K ohm pull-down resistor) +3.3VDC 5% power supply input for internal logic +3.3VDC 5% power supply inputs for Bus A and Bus B transceivers
CLK GND MR
INPUT POWER INPUT
ERROR
OUTPUT
VALMESS FFEMPTY RFLAG
OUTPUT OUTPUT OUTPUT
RF0 / RCVCMDA
OUTPUT
RF1 / RCVCMDB
OUTPUT
RCVA RCVB
OUTPUTS
TXINHA TXINHB BUSA, BUSA BUSB, BUSB BCMODE RTMODE RTA0-RTA4 RTAP VDDLOG VDDA, VDDB
INPUT INPUT XFMR INPUT INPUT INPUTS INPUT POWER POWER
HOLT INTEGRATED CIRCUITS 2
HI-6110
FUNCTIONAL DESCRIPTION
HOST INTERFACE
The Holt HI-6110 provides a simple interface between a host subsystem and a MIL-STD-1553 dual redundant data bus. Messages are processed one at a time. The HI-6110 automatically handles message formatting, error checking, message data buffering, protocol checking and default responses. The host may override default message responses by updating registers on-the-fly. The host communicates with the HI-6110 using a 16-bit bidirectional data bus. On-chip bus transceivers allow the device to be connected to the MIL-STD-1553 data buses using external coupling transformers. The HI-6110 can be configured as 1553 Bus Controller (BC), Remote Terminal (RT) or Bus Monitor (MT). The BCMODE and RTMODE inputs define the mode of operation as follows: BCMODE RTMODE 1553 OPERATING MODE 1 0 Bus Controller (BC) 0 1 Remote Terminal (RT) 1 1 Bus Monitor (no assigned RT address) 0 0 Bus Monitor with assigned RT address The HI-6110 is further configured by setting various configuration bits in the on-chip Control Register. Different sets of 16-bit registers and message data FIFOs are available depending upon the mode of operation (BC, RT or MT). The STR pin is used as the timing signal for data read and write cycles. Data is output on the 16-bit bidirectional data bus, D15-D0, when R/W is high and STR is low. D15-D0 are inputs when R/W is low, and data is written into internal registers on the rising edge of the STR signal. The Chip Select input CS must be low for all register read / write operations: CS R/W STR 1 X X 0 X 1 0 1 0 0 0 0 D15-D0 High impedance High impedance Output Input OPERATION No operation No operation Read Write (on STR rising edge)
Four Register address inputs (RA3, RA2, RA1, RA0) are used to select internal registers during host read or write operations. Note that internal registers may be write-only, read-only or read/write. The register address map is different for BC, RT and MT modes as not all registers are used in each mode. Table 1 defines the HI6110 address map in detail.
Table 1. HI-6110 Internal Register Address Map
ADDRESS RA3:0 0000 0001 0010 0011 0100 0101 0110 0111 1000 1001 1010 1100 REGISTER READ (R/W=1) MODE BC RT or MT with assigned RT address STATUS WORD 1 ( if RT-RT, Receive RT ) COMMAND WORD 1 STATUS WORD 2 only RT-RT Transmit RT COMMAND WORD 2 (from last RT-RT) RECEIVED MODE DATA WORD RECEIVED STATUS WORD (from last RT-RT) RECEIVED DATA FIFO RECEIVED DATA FIFO STATUS REGISTER STATUS REGISTER MESSAGE REGISTER ERROR REGISTER ERROR REGISTER BUS A WORD BUS A WORD BUS B WORD BUS B WORD CONTROL REGISTER CONTROL REGISTER REGISTER WRITE (R/W=0) MODE RT or MT with assigned RT address TRANSMIT STATUS WORD TRANSMIT MODE DATA WORD RESET TRANSMIT DATA FIFO TRANSMIT DATA FIFO CONTROL REGISTER
MT without assigned RT address COMMAND WORD 1 COMMAND WORD 2 (from last RT-RT) RECEIVED MODE DATA WORD Xmitting RT STATUS WORD for RTRT DATA FIFO, includes Xmitted Mode Data STATUS REGISTER MESSAGE REGISTER ERROR REGISTER STATUS WORD (Receiving RT if RTRT) BUS A WORD BUS B WORD CONTROL REGISTER
ADDRESS RA3:0 X000 X001 X010 X011 X1XX
BC COMMAND WORD 1 COMMAND WORD 2 ( used for RT-RT only) TRANSMIT DATA FIFO CONTROL REGISTER
MT without assigned RT address CONTROL REGISTER
Table 2. MIL-STD-1553 Word Type Decoding
SIGNAL RF1 RF0 00 01 10 SIGNALS RF1 AND RF0 IDENTIFY LAST RECEIVED 1553 WORD TYPE MODE BC RT or MT with assigned RT address MT without assigned RT address pulses low if STATUS WORD 2 Valid Receive Command Bus A Valid Receive Command Bus A Valid Receive Command Bus B Valid Receive Command Bus B
While reading the BUS A WORD or BUS B WORD registers, sync type for the stored word can be determined from the RF0 and RF1 outputs. While the /STR input is held low, output RF1 = 1 if the stored Bus Word had Command Sync, or output RF0 = 1 if the stored Bus Word had Data Sync.
HOLT INTEGRATED CIRCUITS 3
HI-6110 (BUS CONTROLLER MODE)
BUS CONTROLLER
The HI-6110 is configured for Bus Controller operation by setting the BCMODE input high and the RTMODE input low. Alternatively, Control Register bits 3:2 (RTMODE:BCMODE) may be programmed to 0:1. Control Register bits 3:2 are logically ORed with the input pins with the same signal name. Figure 1. shows a block diagram of the HI-6110 in Bus Controller mode
INITIALIZATION
In Bus Controller mode, the user must first perform a Master Reset to initialize the BC protocol engine and clear all message registers and data FIFOs. This may be achieved by pulsing the MR input high, or writing a "1" to Control Register bit 0. The user must select a master clock (CLK) frequency by programming Control Register bits 11 and 12, and the Response Time Out must be programmed per Control Register bit 14. Refer to the BC Register Formats section for a full description of available registers and their functions in Bus Controller Mode.
Command Word 1 Command Word 2 Parallel to Serial Manchester Encoder
TXINHA
TX DATA FIFO
BUSA
Serial to Parallel
Bus A
Manchester Decoder
BUSA
Transceiver Bus A Word
D15-D0
CS R/W STR RA2-RA0 FFEMPTY
Host Data Interface
Status Word 1 Status Word 2 Mux RX DATA FIFO
TXINHB
Bus B Word
BUSB
Serial to Parallel
Bus B
Manchester Decoder
BUSB
Transceiver
VALMESS ERROR RFLAG RCVA RCVB RF0 RF1
Status Register Message Status Control Register BC Error Register
CLK MR BCSTART BCMODE RTMODE
Protocol Control
BC Protocol Engine
Figure 1. Block Diagram - Bus Controller Mode
HOLT INTEGRATED CIRCUITS 4
HI-6110 (BUS CONTROLLER MODE)
REGISTER FORMATS (BC Mode)
CONTROL REGISTER (R/W) Write Address: X1XX, Read Address: 1100
A RT M BC O D ME BC O D SE M TA R RT ot R U se EP d N TO ot U C se LK d R SE es L e R rve A3 d R A2 R A1 R A0
X
X
0 8 7
X 6 5 4
0 3
1 2 1 0 LSB
MSB 15 14 13 12 11 10 9
The Control Register settings determine HI-6110 operating mode, clock frequency and the bus enabled for transmit. It can also be used to address registers for read/write operations, to assert master reset, and to initiate MIL-STD-1553 message sequences.
TR
BIT 15 14
NAME REPTO
13 12
CLKSEL
11 10 - 7
Reserved RA3:0
6 5-4
TRB, TRA
3-2
RTMODE, BCMODE
1 0
BCSTART MR
FUNCTION Not used in BC mode Controls the time-out which causes the No Response Error. 0 17 usec Gap (equivalent to 57 usec for 5.2.1.7 of the RT Validation Test Plan) 1 131 usec Gap Not used in BC mode Selects the frequency of the HI-6110 external CLK input, as follows: CLKSEL Value 0 24 MHz 1 12 MHz This bit must be written to "0". Register Address for HI-6110 register and data read and write operations. The register address is defined by the logical OR of these bits and their corresponding input pins. Writting Control Register bits 10:7 to 0000 is necessary if the RA0 - RA3 input pins are used for HI-6110 register addressing. Not used in BC mode Setting either TRA or TRB to "1" enables transmit on MIL-STD-1553 BUS A or BUS B. Setting both TRA and TRB selects neither bus. The BC protocol engine connects to the selected, active bus. The 1553 receiver, Manchester decoder and RCV output signal are still operational on the inactive bus. Valid words received on the inactive bus can be read without changing active bus by reading the Bus A Word or Bus B Word register. NOTE: The TXINHA and TXINHB input pins can override bus enablement. HI-6110 mode select bits. These Control Register bits are logically OR'ed with their corresponding input pins, allowing the user to select 1553 operating mode under either hardware or software control: RTMODE BCMODE 1553 OPERATING MODE 0 0 Bus Monitor (MT), with assigned RT address 0 1 Bus Controller (BC) 1 0 Remote Terminal (RT) 1 1 Bus Monitor (MT), without assigned RT address If initially reset, writing a "1" to this bit initiates a BC message sequence. This bit should be reset before next message. Master Reset. Writing "1" and then "0" to this bit performs the same function as pulsing the MR pin. All register and data FIFOs are cleared when master reset is asserted. The Control Register is the exception; it is not affected by Master Reset.
TRANSMIT DATA FIFO (Write only) Write Address: X010
MIL-STD-1553 Message Data Word 15:0 15 14 13 12 11 10 9 MSB 8 7 6 5 4 3 2 1 0 LSB
TR
N
B
The Transmit Data FIFO is 32-words deep and holds MILSTD-1553 message data. The FIFO is cleared on Master Reset. Message data to be transmitted by the BC may be loaded into the TRANSMIT DATA FIFO by the host prior to BCSTART. Any data word must be loaded before mid-parity bit for the 1553 word it follows. Words are transmitted in the order they are loaded. The Receive Data FIFO is 32-words deep and holds MILSTD-1553 message data. The FIFO is cleared by Master Reset or when BCSTART occurs.
RECEIVE DATA FIFO (Read only) Read Address: 0100
MIL-STD-1553 Message Data Word 15:0 15 14 13 12 11 10 9 MSB 8 7 6 5 4 3 2 1 0 LSB
All MIL-STD-1553 data words received by the BC are stored in the Receive DATA FIFO. A low FFEMPTY flag (output pin or Status register bit) means message data is available to be read by the host. Successive data reads cause FFEMPTY to go high when the last word is read.
HOLT INTEGRATED CIRCUITS 5
HI-6110 (BUS CONTROLLER MODE)
BC OPERATION
COMMAND WORD 1 REGISTER (Write only) Write Address: X000
T/ R
RT Address
Subaddress / Mode
Data Word Count / Mode Code
MSB 15 14 13 12 11 10 9
8
7
6
5
4
3
2
1
0
LSB
The Command Word 1 register is loaded by the host with the MIL-STD-1553 Command Word to be issued by the Bus Controller. Bit 10 should be set for Transmit, reset for Receive. For RT to RT commands, Command Word 1 register holds the receive command word and Command Word 2 register holds the transmit command word.
COMMAND WORD 2 REGISTER (Write only) Write Address: X001
Used only for RT-to-RT commands, the Command Word 2 register is loaded by the host with the MIL-STD-1553 transmit Command Word addressed to the transmitting Remote Terminal. The Command Word 1 register is loaded with the receive Command Word addressed to the receiving Remote Terminal.
LSB
MSB 15 14 13 12 11 10 9
T/ R
RT Address
Subaddress / Mode
Data Word Count / Mode Code
1 8 7 6 5 4 3 2 1 0
If the next Message is not an RT-to-RT transfer, it is necessary to write the Transmit/Receive bit 10 to "0".
STATUS WORD 1 REGISTER (Read only) Read Address: 0000
es In sag st e r E Se um rro rv ent r ic at e R ion eq R es ue er st ve d Br oa Bu dca sy st C Su om bs m ys D an yn te d am m R Te i F ec rm c B lag ei ve in us al d Fl Co ag nt ro lA cc ep ta nc e
R MSB 15 14 13 12 11 10 9 8 7 R 6 R 5 4 3 2 1 0 LSB
The Status Word 1 register holds the returned MIL-STD-1553 Status Word received from an RT responding to a BC issued command. For RT to RT commands, the Status Word 1 register captures the status word returned by the receiving remote terminal, while the Status Word 2 register captures the status word returned by the transmitting remote terminal
RT Address
STATUS WORD 2 REGISTER (Read only) Read Address: 0001
es In sag st e r E Se um rro rv ent r ic at e R ion eq r R es ue er st ve d Br oa Bu dca sy st C Su om bs m ys D an yn te d am m R Te i F ec rm c B lag ei ve in us al d Fl Co ag nt ro lA cc ep ta nc e
R MSB 15 14 13 12 11 10 9 8 7 R 6 R 5 4 3 2 1 0 LSB Bus A/B Word 15:0 8 7 6 5 4 3 2 1 0 LSB
RT Address
M
Used only for RT to RT commands, the Status Word 2 register captures the MIL-STD-1553 status word returned by the transmitting remote terminal.
BUS A WORD REGISTER (Read only) Read Address: 1001 BUS B WORD REGISTER (Read only) Read Address: 1010
In BC mode, the Bus A Word register holds the last valid MILSTD-1553 word received on Bus A. The Bus B Word register holds the last valid MIL-STD-1553 word received on Bus B. While /STROBE is low to read a Bus Word register, the sync type associated with the stored word can be determined from the RF0 and RF1 pins. The RF1 signal is high for Command Sync, the RF0 signal is high for Data Sync.
MSB 15 14 13 12 11 10 9
M
HOLT INTEGRATED CIRCUITS 6
HI-6110 (BUS CONTROLLER MODE)
BC OPERATION
STATUS REGISTER (Read only) Read Address: 0101
ER R VA OR LM NE ot S US N se ot d U R se FL d FF AG EN R MP CT VY RB C V ID A LE
Not Used 0 0 0 0 0 0 0 9
0 8 7 6
0 5 4 3 2 1 0 LSB
MSB 15 14 13 12 11 10
The Status Register may be interrogated by the host at any time. It provides information that allows the user to determine whether the HI-6110 is busy executing a MIL-STD-1553 message and its progress. After a message sequence has completed, the Status register indicates whether an error was detected or if the message sequence was successful.
BIT 15- 9 8
NAME ERROR
7
VALMESS
5-6 4 3
RFLAGN FFEMPTY
2 1 0
RCVB RCVA IDLE
FUNCTION Not used. These bits are set to "0". This bit is "0" after Master Reset or if the last MIL-STD-1553 message sequence was valid. ERROR is set to a "1" if the last sequence had an error. The nature of the message error can be determined by examining the Error Register. The ERROR output pin reflects the state of this bit. This bit is a "0" after reset or the last MIL-STD-1553 message containing an error. VALMESS goes high on the completion of an error-free MIL-STD-1553 message sequence. VALMESS is reset to a zero at the start of each new BC message. The VALMESS output pin reflects the state of this bit. Not used. This bit goes low any time a Status Word is received If "0" then the receive Data FIFO contains at least one word of data. This bit is set to a "1" on reset, or when a new BC command sequence is initiated, or when the user has read all available received data words from the receiver Data FIFO. The FFEMPTY output pin reflects the state of this bit. Set to a "1" if the Bus B Word register holds a valid MIL-STD-1553 word. Set to a "1" if the Bus A Word register holds a valid MIL-STD-1553 word. If "1" then the Bus Controller is idle. This bit is a zero throughout the time a MIL-STD-1553 message is in progress. The bit returns to a "1" when the message is completed.
ERROR REGISTER (Read only) Read Address: 0111
The BC Error Register is cleared at reset and at the beginning of each MIL-STD-1553 message sequence. If an error is encountered during message execution, the ERROR pin goes high, the ERROR bit is set in the Status Register, and one or more bits are set in the Error Register. After the error condition is flagged, the Error Register should be interrogated before the receipt of the next Manchester Word.
O SW ER 1R SW ER 2R FF ER ER N RR ot U C se Od N G ER AP R C ER SY R D CE SY R R M CE AN R R N ER OR R C V
0 8 7 6 5 4 3 2 1 0 LSB
Not Used 0 0 0 0 0
MSB 15 14 13 12 11 10 9
BIT 15 - 11 10 9 8 7 6 5 4 3 2 1 0
NAME PROERR SW1ERR SW2ERR FFERR CONERR GAPERR CSYCERR DSYCERR MANERR NORCV
PR
FUNCTION Not used. These bits are set to "0". Protocol Error: Extraneous word detected on the bus during a message sequence. Status Word 1 Error: In an RT-RT sequence. the receiving RT Status Word has the wrong RT address. For RT to RT transfers, SW1ERR reports an error in the Status Word received from the receiving RT. Status Word 2 Error: In an RT-RT sequence. the transmitting RT Status Word has the wrong RT address. Data FIFO Error: Data was not available in the transmit Data FIFO in time to allow transmission. Not used. This bit is set to "0". Contiguous Message Error: Transmission was not contiguous. Bus activity was detected in the 4.0 uS gap after a valid message was completed. Command Sync Error: Expected Data Sync, but got Command Sync. Data Sync Error: Expected Command Sync, but got Data Sync. Manchester Encoding Error: The decoder detected an error in Manchester encoding, bit count or parity. This bit is set when a data word is expected while processing a receive command, but a gap is detected. It is also set when an RT-to-RT "No Response Timeout" occurs, as defined per MIL-HDBK-1553, Figure 8 "RT-RT Timeout Measurement". The HI-6110 asserts this error when the bus dead-time between the RTRT command pair and the transmit RT Status Word exceeds 15 uS when Control Register bit 14 = "0" or 129uS when Control Register bit 14 = "1".
HOLT INTEGRATED CIRCUITS 7
HI-6110 (BUS CONTROLLER MODE)
ISSUING BC COMMANDS
Register operations in the HI-6110 can be addressed using either the RA0-RA3 inputs or the RA3:RA0 bits in the Control Register. Each RA input is logically ORed with its corresponding Control Register bit. When using input pins for register addressing, the Control Register bits 10:7 must be reset. Register addressing via Control Register bits 10:7 is a 2-step process. First, the target register address is written to the Control Register (and the RA0RA3 inputs must be held low). Next, the desired register operation is performed: the Control Register provides the register address while the R/W and STB inputs specify data direction and clock the data transfer. A MIL-STD-1553 Bus Controller message can be pre-loaded into the HI-6110 by writing the required Command Word to the Command Word 1 Register. The Command Word 2 register is used to hold the second (Transmit) Command Word for RT to RT commands. Message data for MIL-STD-1553 Receive commands are loaded by the host into the Transmit Data FIFO. For Mode Code commands with data word, a data word to be transmitted must be written to the Transmit Data FIFO. A BC message sequence commences when a positive edge occurs at the BCSTART input pin, or when Control Register bit 1 (BCSTART) transitions from 0 to 1 as a result of a register write operation by the Host. Control Register bit 1 is NOT automatically reset upon BC message sequence execution. Therefore, when using the Control Register to start message sequences, it is first necessary to reset bit 1 before it is set to initiate the next message sequence. The MIL-STD-1553 message is properly formatted by the HI-6110 and output on the selected MIL-STD-1553 data bus. The HI-6110 waits for a response from the MIL-STD-1553 bus if the command type expects a response. The responding RT's Status Word is captured in the HI-6110 Status Word 1 Register. The Status Word 2 register is used to capture the Status Word from the transmitting RT during RT-to-RT transfer commands. Message data words received from the transmitting RT are stored in the Receive Data FIFO. A mode data word received from the transmitting RT is also stored in the Receive Data FIFO. If the reply from the MIL-STD-1553 responding terminal was a valid response and met all response time, Sync and Data encoding, parity checks, word count, RT address, and contiguous message requirements, then the VALMESS output pin goes high and bit 7 in the Status Register is set. The host may then retrieve the contents of the Status Word register(s) and Receive Data FIFO as required by the application software. The FFEMPTY output pin will be low if the FIFO contains at least one data word, and the corresponding bit 3 in the Status Register will be set. When all data words have been read by the host controller, the FFEMPTY output pin goes high, and bit 3 in the Status Register is reset. The final result of any BC message sequence is assertion of either a VALMESS flag or an ERROR flag. If an error is detected during a MIL-STD-1553 message sequence, the ERROR output pin is asserted, corresponding bit 8 in the Status Register is set, and the appropriate error bit(s) are set in the Error Register. The host may interrogate the Error Register to determine what action is necessary to correct the error. The VALMESS output remains low for any message for which an error is detected. There are limited circumstances when VALMESS may be followed by ERROR. For example, if the BC requests an RT response with 4 data words but instead receives 5, the extra data word will cause the VALMESS flag to be reset and ERROR to be set. The host controller has the option of reading RT responses on-the-fly by monitoring the RFLAG and FFEMPTY flags, or may simply wait for end of sequence flags, VALMESS or ERROR. While the Transmit Data FIFO may be pre-loaded before starting a message sequence, any data word may be loaded on the fly, as long as it is written before mid-sync during that word's transmit window. In order to have the full 32 word capacity available, the Transmit Data FIFO should be cleared before writing data. The FIFO is cleared at Master Reset, or when VALMESS or ERROR is asserted at the end of a message. The Receive Data FIFO is cleared at Master Reset, or by performing a series of FIFO read operations until FFEMPTY goes high. The Receive Data FIFO will not accept new receive data when full. The FIFO must have at least one empty register by midsync within the time window for any incoming data word.
HOLT INTEGRATED CIRCUITS 8
HI-6110 (BUS CONTROLLER MODE)
EXAMPLE BC MIL-STD-1553 MESSAGE SEQUENCES Example 1. BC TO RT Transfer (BCRT message)
Host Write Data FIFO (Data Word 3) Host Write Data FIFO (Data Word 2) Host Write Data FIFO (Data Word 1) Host Write CW1 (Command Word) Host Read SW1 (Status Word)
The HI-6110 Bus Controller issues a Receive Command with 3 data words to a Remote Terminal on the bus. The correct Status Word is received.
STR
BCSTART MIL-STD-1553 Bus
Receive Command Data Word 1 Data Word 2 Data Word 3 Status Word
From HI-6110 Bus Controller VALMESS
From RT
Example 2. RT TO BC Transfer (RTBC message)
The HI-6110 Bus Controller issues a Transmit Command requiring a 2 data word response to a Remote Terminal on the bus. The correct Status Word and 2 Data Words are received and read by the host.
Host Read Data FIFO (Data Word 2) Host Read Data FIFO (Data Word 1)
Host Write CW1 (Command Word)
Host Read SW1 (Status Word)
STR
BCSTART MIL-STD-1553 Bus
Transmit Command Status Word Data Word 1 Data Word 2
From HI-6110 BC VALMESS FFEMPTY
From RT
Example 3. RT to RT Transfer (RTRT message)
The HI-6110 Bus Controller issues an RT to RT transfer with 2 data words to two Remote Terminal on the bus. The RTs execute the command and the Bus Controller validates the RT responses. Note that the data transferred is captured by the HI-6110 Bus Controller and may be read by the host.
Host Read Data FIFO (Data Word 2) Host Read Data FIFO (Data Word 1)
Host Write CW2 (Transmit Command) Host Write CW1 (Receive Command)
Host Read SW2 (Status Word Tx) Host Read SW1 (Status Word Rx)
STR
BCSTART MIL-STD-1553 Bus
Receive Command Transmit Command Status Word (Tx) Data Word 1 Data Word 2 Status Word (Rx)
From HI-6110 Bus Controller VALMESS
From Transmitting RT
From Receiving RT
FFEMPTY
HOLT INTEGRATED CIRCUITS 9
HI-6110 (BUS CONTROLLER MODE)
EXAMPLE BC MIL-STD-1553 MESSAGE SEQUENCES Example 4. Mode Code Command without Data Word
The HI-6110 Bus Controller issues a Mode Code Command to a Remote Terminal on the bus. The correct Status Word is received.
Host Write CW1 (Command Word)
Host Read SW1 (Status Word)
STR
BCSTART MIL-STD-1553 Bus
Mode Code Command Status Word
From HI-6110 Bus Controller VALMESS
From RT
Example 5. Mode Code with Data Word (Transmit)
The HI-6110 Bus Controller issues a Mode Command with Data Word (Transmit) to a Remote Terminal. The Status Word and mode data word are received; the data word is stored in the Receive FIFO. Status Word and mode data are read by the host.
Host Read Data FIFO (Mode Data)
Host Write CW1 (Command Word)
Host Read SW1 (Status Word)
STR
BCSTART MIL-STD-1553 Bus
Mode Code Command Status Word Mode Data
From HI-6110 BC VALMESS
FFEMPTY
From RT
Example 6. Mode Code with Data Word (Receive)
The HI-6110 Bus Controller issues a Mode Command with Data word (Receive) to a Remote Terminal on the bus. The correct Status Word is returned and read by the host.
Host Write Data FIFO (Mode Data) Host Write CW1 (Command Word) Host Read SW1 (Status Word)
STR
BCSTART MIL-STD-1553 Bus
Mode Code Command Mode Data Status Word
From HI-6110 BC VALMESS
From RT
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HI-6110 (BUS CONTROLLER MODE)
EXAMPLE BC MIL-STD-1553 MESSAGE SEQUENCES Example 7. Broadcast BC to RT(s) Transfer
Host Write Data FIFO (Data Word 3) Host Write Data FIFO (Data Word 2)
The HI-6110 Bus Controller issues a Broadcast Receive Command with 3 data words to all Remote Terminals.
Host Write Data FIFO (Data Word 1) Host Write CW1 (Command Word)
STR
BCSTART MIL-STD-1553 Bus
Receive Command Data Word 1
Data Word 2 Data Word 3
From HI-6110 Bus Controller
VALMESS
Example 8. Broadcast RT to RT(s) Transfer
The HI-6110 Bus Controller issues a Broadcast RT to RT transfer Command with 2 data words to a Remote Terminal on the bus. The RT broadcasts the message and the Bus Controller validates the RT response. The transmitted data words are captured by the HI-6110 Bus Controller and may be read by the host controller.
Host Read Data FIFO (Data Word 2)
Host Write CW2 (Transmit Command) Host Write CW1 (Receive Command)
Host Read Data FIFO (Data Word 1) Host Read SW2 (Status Word Tx)
STR
BCSTART MIL-STD-1553 Bus
Receive Command Transmit Command Status Word (Tx) Data Word 1 Data Word 2
From HI-6110 Bus Controller VALMESS
From Transmitting RT
Example 9. Broadcast Mode Code without Data Word
Host Write CW1 (Command Word)
The HI-6110 Bus Controller issues a Broadcast Mode Command without data word to all Remote Terminals on the bus.
STR
BCSTART MIL-STD-1553 Bus
Mode Code Command
From HI-6110 BC VALMESS
Example 10. Broadcast Mode Code with Data Word
Host Write Data FIFO (Mode Data) Host Write CW1 (Command Word)
The HI-6110 Bus Controller issues a Broadcast Mode Command with data word to all Remote Terminals on the bus.
STR
BCSTART MIL-STD-1553 Bus
Mode Code Command Mode Data
From HI-6110 BC VALMESS
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HI-6110 (REMOTE TERMINAL MODE)
REMOTE TERMINAL
The HI-6110 is configured for Remote Terminal operation by setting the BCMODE input low and the RTMODE input high. An alternative is programming Control Register bit 2 (BCMODE) to a "0" and programming Control Register bit 3 (RTMODE) to a "1". These Control Register bits are logically ORed with their corresponding input pins. Figure 2. shows a block diagram of the HI-6110 in Remote Terminal mode.
INITIALIZATION
In Remote Terminal mode, the host controller first performs a Master Reset to initialize the RT protocol engine and clear all message registers and data FIFOs. This may be achieved by pulsing the MR input high, or writing a "1" and then a "0" to Control Register bit 0. The user must select a master clock (CLK) frequency by programming Control Register bits 11 and 12. Refer to the RT Register Formats section for a full description of available registers and their functions in Remote Terminal Mode.
Status Word TX DATA FIFO
Parallel to Serial
Manchester Encoder
TXINHA
BUSA
Mode Data (W) Serial to Parallel Manchester Decoder
BUSA
Bus A
Transceiver Bus A Word
D15-D0
Command Word 1 Host Data Interface Command Word 2
CS R/W STR RA3-RA0 FFEMPTY
RX DATA FIFO
Mode Data (R) Status Word Rec'd
TXINHB
Bus B Word
BUSB
Serial to Parallel
Bus B
Manchester Decoder
BUSB
Transceiver
VALMESS ERROR RFLAG RCVA RCVB RCVCMDA RCVCMDB CLK MR BCSTART BCMODE RTMODE RTA4-RTA0 RTAP
Status Register Message Status Control Register RT Error Register Message Register Protocol Control RT Protocol Engine
Terminal Address
Figure 2. Block Diagram - Remote Terminal Mode
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HI-6110 (REMOTE TERMINAL MODE)
REGISTER FORMATS (RT Mode)
CONTROL REGISTER (R/W) Write Address: X1XX, Read Address: 1100
U s EP ed TO ID W CT LK R SE es L e R rve A3 d R A2 R A1 R A0 R ER TR R B TR A RT M BC OD ME N OD ot uE M se Rd
X
0 8 7 6 5 4
1 3
0 2
X 1 0 LSB
MSB 15 14 13 12 11 10 9
The Control Register value specifies HI-6110 operating mode, clock frequency and the bus enabled for transmit. It can also be used to address registers for read/write operations, assert master reset, as well as data word suppression when illegal command detection is implemented .
N
BIT 15 14
R
ot
NAME REPTO
13
IDWT
12
CLKSEL
11 10 - 7
Reserved RA3:0
6
RERR
5-4
TRB, TRA
3-2
RTMODE, BCMODE
1 !0
MR
FUNCTION Not used. Controls the time-out which causes the No Response Error. 0 17 usec Gap (equivalent to the 57 usec measurement of 5.2.1.7 of the RT Validation Test Plan) 1 131 usec Gap Inhibit Data Word Transmission. When "illegal command detection" is required, this feature alows "command illegalization". When the IDWT bit is set, normal transmission of ordinary and mode data words is suppressed for all transmit commands. NOTE: There will be no VALMESS or ERROR assertion for the affected message. For normal response to the next command, this bit must be reset before that command's Status Word bit 0 is transmitted. Selects the frequency of the HI-6110 external CLK input: CLKSEL Value 0 24 MHz 1 12 MHz This bit must be reset to "0" Register Address for HI-6110 register and data read / write operations. The register address is defined by the logical OR of these bits and their corresponding input pins. Setting Control Register bits 10:7 to 0000 ensures that only the input pins are used for addressing registers. Reset ERROR. If RERR is low, the ERROR output pin can only be reset by asserting MR, master reset. Writing RERR high causes the ERROR output to be reset (rising edge). If the RERR is left high, the ERROR output will automatically reset after 3 to 4 microseconds. For normal operation, this bit is set to "1". Setting either TRA or TRB to "1" enables transmission on MIL-STD-1553 BUS A or BUS B. Setting both TRA and TRB selects neither bus. The RT protocol engine connects to the selected, active bus. The 1553 receiver, Manchester decoder and RCV output signal are still operational on the inactive bus. This is useful when the remote terminal receives a command on the inactive bus, indicated by RCV signal output. The RT must switch active buses to service the command. Valid words received on the inactive bus can be read without changing active bus by reading the Bus A Word or Bus B Word register, but the terminal cannot respond as transmit is disabled. NOTE: the TXINHA and TXINHB input pins can override bus enablement. HI-6110 mode select. These Control Register bits are logically OR'ed with their corresponding input pins, allowing the user to select 1553 operating mode under either hardware or software control: RTMODE BCMODE 1553 OPERATING MODE 0 0 Bus Monitor (MT), with assigned RT address 0 1 Bus Controller (BC) 1 0 Remote Terminal (RT) 1 1 Bus Monitor (MT), without assigned RT address Not used in RT mode. Master Reset. Writing "1" and then "0" to this bit performs the same function as pulsing the MR pin. All register and data FIFOs are cleared when master reset is asserted. The Control Register is the exception; it is not affected by Master Reset. The Transmit Data FIFO is 32-words deep and holds MILSTD-1553 message data. The FIFO is cleared on Master Reset or by any write to register address X010. Any data word to be transmitted by the RT must be loaded into the TRANSMIT DATA FIFO before the mid-parity bit for the preceding MIL-STD-1553 word. Words are transmitted in the order they are loaded.
TRANSMIT DATA FIFO (Write only) Write Address: X011 RESET TRANSMIT DATA FIFO Write Address: X010
MIL-STD-1553 Message Data Word 15:0 15 14 13 12 11 10 9 MSB 8 7 6 5 4 3 2 1 0 LSB
BUS A WORD REGISTER (Read only) Read Address: 1001 BUS B WORD REGISTER (Read only) Read Address: 1010
Bus A/B Word 15:0
MSB 15 14 13 12 11 10 9
8
7
6
5
4
3
2
1
0
LSB
In RT mode, the Bus A Word register holds the last valid MIL-STD-1553 word received on Bus A. The Bus B Word register holds the last valid MIL-STD-1553 word received on Bus B.
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HI-6110 (REMOTE TERMINAL MODE)
RT OPERATION
RECEIVE DATA FIFO (Read only) Read Address: 0100
MIL-STD-1553 Message Data Word 15:0 15 14 13 12 11 10 9 MSB 8 7 6 5 4 3 2 1 0 LSB
The Receive Data FIFO is 32-words deep and holds MILSTD-1553 data words received by the RT. The FIFO is cleared on Master Reset or after all words have been read by the host. A low FFEMPTY flag (pin or Status register) means FIFO data is available to be read by the host. Successive data reads cause FFEMPTY to go high when the last data word is read.
COMMAND WORD 1 REGISTER (Read only) Read Address: 0000
For all commands except RT to RT, the Command Word 1 register contains the last valid Command Word received.
T/ R
RT Address Subaddress / Mode Data Word Count / Mode Code
MSB 15 14 13 12 11 10 9
8
7
6
5
4
3
2
1
0
LSB
If the last valid command received was RT to RT, the Command Word 1 register holds the first (receive) command word and the Command Word 2 Register holds the second (transmit) command word. Then if Message Register bits 3 and 9 are both 0, the Command Word 1 register contains the valid command.
COMMAND WORD 2 REGISTER (Read only) Read Address: 0001
If the last valid command received was RT to RT, the Command Word 2 register contains the second (transmit) command word. (See note above for Command Word 1.) Whenever Message Register bit 3 or bit 9 is set, the valid command is contained in the Command Word 2 register.
LSB
T/
1 MSB 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
R
RT Address
Subaddress / Mode
Data Word Count / Mode Code
Whenever RCV is asserted, the active Command Word register can always be determined by checking Message Register bits 3 and 9.
TRANSMIT STATUS WORD REGISTER (Write only) Write Address: X000
es In sag st e r E Se um rro rv ent r ic at e R ion eq R es ue er st ve d, M Br us oa tb dc Bu a e "0 sy st 00 C Su om " bs m D ys an yn te d am R Te mi F ec rm c B lag ei ve in us al d Fl Co ag nt ro lA cc ep ta nc e
R MSB 15 14 13 12 11 10 9 8 7 R 6 R 5 4 3 2 1 0 LSB
RT Address
The Transmit Status Word register holds bits 10:0 for the status word transmitted by the remote terminal in response to a (non-broadcast) command. Status word bits 15:11 are automatically set to match the RT Address present at the RTA4:0 input pins. The HI-6110 automatically transmits a status word in response to valid non-broadcast commands. The register may be changed anytime prior to status word mid-sync bit. The Transmit Status Word register is not affected by MR, master reset.
RECEIVED STATUS WORD REGISTER (Read only) Read Address: 0011
es In sag st e r E Se um rro rv ent r ic at e R ion eq R es ue er st ve d Br oa Bu dca sy st C Su om bs m ys D an yn te d am m R Te i F ec rm c B lag ei ve in us al d Fl Co ag nt ro lA cc ep ta nc e
R MSB 15 14 13 12 11 10 9 8 7 R 6 R 5 4 3 2 1 0 LSB
RT Address
M
Updated only during RT to RT transmit messages, the Received Status Word register captures the MIL-STD-1553 status word transmitted by the receiving remote terminal.
M
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HI-6110 (REMOTE TERMINAL MODE)
RT OPERATION
STATUS REGISTER (Read only) Read Address: 0101
The Status Register may be interrogated by the host at any time. It provides information that allows the user to determine whether the HI-6110 is busy executing a MIL-STD-1553 message and its progress. After a message sequence has completed, the Status register indicates whether an error was detected or if the message sequence was successful.
ER R VA OR LM RE F1 S S R F0 R FL FF AG EN R MP CT VY RB C V ID A LE
0 0 9 8 7 6 5 4 3 2 1 0 LSB
Not used 0 0 0 0 0
MSB 15 14 13 12 11 10
BIT 15- 9 8
NAME ERROR
7
VALMESS
6 5 4
RF1 RF0 RFLAGN
3
FFEMPTY
2 1 0
RCVB RCVA IDLE
FUNCTION Not used. These bits are set to "0". This bit is reset to "0" after MR, and will automatically reset 2 to 3 uS after assertion if Control register RERR bit is set. ERROR is set to a "1" if the last sequence had an error. The nature of the message error can be determined by examining the Error Register. The ERROR output pin reflects the state of this bit. This bit is a "0" after reset or after a MIL-STD-1553 message containing an error. VALMESS goes high upon completion of an error-free MIL-STD-1553 message sequence. VALMESS is reset to a zero each time a valid command is received on the active bus. The VALMESS output pin mirrors the state of this bit. This bit goes high when a valid Receive Command arrives on Bus B. It is reset by the RCV B flag. This bit goes high when a valid Receive Command arrives on Bus A. It is reset by the RCV A flag. During a message sequence this bit goes low at the arrival of a Command Word, Status Word, or Mode Data Word. For consecutive words, this bit will momentarily go high between words. The RFLAG output reflects the state of this bit. If "0", the receive Data FIFO contains at least one unread data word. This bit is set to "1" upon master reset, or when the user has read all available received data words from the receiver Data FIFO. The FFEMPTY output pin reflects the state of this bit. Set to "1" upon receipt of a valid Command Word on Bus B except for RT-to-RT receive commands when it is set after the second Command Word is received. The RCVB output pin mirrors the state of this bit. Set to "1" upon receipt of a valid Command Word on Bus A except for RT-toRT receive commands when it is set after the second Command Word is received. The RCVA output pin mirrors the state of this bit. If "1", the RT is idle. This bit is "0" throughout the time the RT is processing a valid MIL-STD-1553 Command message. The bit returns to a "1" when the message is completed.
ERROR REGISTER (Read only) Read Address: 0111
The RT Error Register is cleared at Master Reset and error flags are automatically reset if Control Register bit 6 = "1". If an error is encountered during message execution, the ERROR pin goes high, the ERROR bit is set in the Status Register, and one or more bits are set in the Error Register to specify the type of error detected.
RT P N AR ot ER U FF se R ER d NR ot U C se Od N G ER AP R SE ER QR SY ER NR M CE AN R R N ER OR R C V
0 0 0 8 7 0 6 5 4 3 2 1 0 LSB
Not used 0 0 0 0
MSB 15 14 13 12 11 10 9
BIT 15 - 10 9 8 7 6 5 4 3 2 1 0
NAME RTPARERR FFERR CONERR GAPERR SEQERR SYNCERR MANERR NORCV
FUNCTION Not used. These bits are set to "0". RT Parity Error in the pin-programmed RT address. RT address parity is checked only at Master Reset, and once this bit is set, the host controller must perform a subsequent Master Reset to update parity status. Not used. This bit is set to "0". Data was not available in the Transmit Data FIFO. Not used. This bit is set to "0". Contiguous Message Error: Transmission was not contiguous. Bus activity was detected in the 4.0 uS gap after a valid message was completed. The next event after a Command Word was erroneous. For example, a gap following a valid receive Command Word, or a contiguous Data Word following a transmit Command Word. Sync Error: Expected Command Sync and got Data Sync, or vice versa. Manchester Encoding Error: The decoder detected an error in Manchester encoding, bit count or parity. This bit is set when a data word is expected while processing a receive command, but a gap is detected. It is also set when an RT-to-RT "No Response Timeout" occurs, as defined per MIL-HDBK-1553, Figure 8 "RT-RT Timeout Measurement". The HI-6110 asserts this error when the bus dead-time between the RTRT command pair and the transmit RT Status Word exceeds 15 uS.
HOLT INTEGRATED CIRCUITS 15
HI-6110 (REMOTE TERMINAL MODE)
RT OPERATION
TRANSMIT MODE DATA WORD REGISTER (Write only) Write Address: X001
Mode Data Word 15:0 15 14 13 12 11 10 9 MSB 8 7 6 5 4 3 2 1 0 LSB
The write-only Transmit Mode Data Word register is loaded by the host with the Mode Data word to be transmitted by the remote terminal in response to a mode code with mode data word (transmit) command. The Transmit Mode Data Word register is not affected by MR, master reset.
RECEIVE MODE DATA WORD REGISTER (Read only) Read Address: 0010
Mode Data Word 15:0 15 14 13 12 11 10 9 MSB 8 7 6 5 4 3 2 1 0 LSB
The read-only Receive Mode Data Word register holds the value of the last mode data word received during a mode code with data word (receive) command addressed to this RT. This register is reset only by MR master reset.
MESSAGE REGISTER (Read only) Read Address: 0110
Not Used 0 0 13 12 11 10 9
Message Type Flags 8 8 7 7 6 6 5 5 4 4 3 3 2 2 1 1 0 0 LSB
The Message Register identifies command type when a new valid command is received from the MIL-STD-1553 bus controller. When a valid command is received, message type is decoded and appropriate Message Register bit(s) are set. Two bit pairs are mirrored: Bit pair 3 and 12, Bit pair 5 and 13. In the table below, "RTA" indicates assigned Remote Terminal address. Broadcast command occurs when address = 11111. Bit 10 is set for mode code or non-RT-RT transmit commands where bits 15:11 equal RTA or 11111. Bit 10 enables detection and "illegalization" for three undefined mode code command types listed in the table below. Command Word 2 Bit Fields 15:11 10 9:5 4:0
MSB 15 14 13 12 11 10 9
Hex 0001 0080 0004 0100 0402 1008 0200
Last Valid Command Decoded
Command Word 1 Bit Fields 15:11 RTA 11111 RTA 11111 RTA not 11111 11111 RTA 11111 RTA 11111 RTA 11111 RTA 11111 10 0 0 0 0 1 0 0 1 1 0 0 1 1 0 0 9:5 00001 -11110 00001 -11110 00001 -11110 00001 -11110 00001 -11110 00001 -11110 00001 -11110 0000 or 11111 0000 or 11111 0000 or 11111 0000 or 11111 0000 or 11111 0000 or 11111 0000 or 11111 0000 or 11111 4:0 XXXXX XXXXX XXXXX XXXXX XXXXX XXXXX XXXXX 0XXXX 0XXXX 0XXXX 0XXXX 1XXXX 1XXXX 1XXXX 1XXXX
NON-MODE COMMANDS Receive command from BC, not broadcast Receive command from BC, broadcast Receive command, RT-RT, not broadcast Receive command, RT-RT, broadcast Transmit command, RT to BC Transmit command, RT-RT, not broadcast Transmit command, RT-RT, broadcast MODE CODE COMMANDS 0410 MC0 - MC15 T/R=1 no mode data, not broadcast 0400 * MC0 - MC15 T/R=1 no mode data, broadcast 0410 MC0 - MC15 T/R=0 not broadcast, UNDEFINED 0400 MC0 - MC15 T/R=0 broadcast, UNDEFINED 2420 MC16 - MC31 T/R=1 mode data, not broadcast 0400 * MC16 - MC31 T/R=1 broadcast, UNDEFINED 0040 MC16 - MC31 T/R=0 mode data, not broadcast 0800 MC16 - MC31 T/R=0 mode data, broadcast * Two cases where 0400 is reset 550nS after RCV
XXXXX 1 not RTA 1 RTA RTA 1 1
00001-11110 XXXXX 00001-11110 XXXXX 00001-11110 XXXXX 00001-11110 XXXXX
Command Word 2 only applies for RT-RT commands
RESET TRANSMIT DATA FIFO (Write Only) Write Address: X010
Don't Care X MSB X X X X X X X X X X X X X X X LSB
Performing a host write cycle to register address X010 causes the Transmit Data FIFO to be cleared. New data may be loaded into the FIFO by writing to register address X011 as described above. Note that no data is stored when performing a write cycle to register address X010 and the actual data presented on the databus is not used (don't care).
HOLT INTEGRATED CIRCUITS 16
HI-6110 (REMOTE TERMINAL MODE)
REMOTE TERMINAL OPERATION
The HI-6110 remote terminal (RT) address is set by wiring the RTA4:RTA0 input pins to the desired address. RTA0 is the least significant address input. The RTAP input must be set/reset to reflect odd parity for the RA4:0 address inputs. Upon Master Reset, the HI-6110 reads the RT address inputs and checks for correct parity. If a parity error is detected, the PARERR bit is set in the Error Register and the HI-6110 RT will not respond to MILSTD-1553 Command Words. The host controller must correct the RT address-parity mismatch, then reassert Master Reset to enable bus operations. When configured as a Remote Terminal, the HI-6110 continuously monitors both MIL-STD-1553 buses. Each received Command Word is checked for validity. The RCVA and RCVB outputs are asserted only when a received command is valid. Valid is defined as having an RT address matching the pinprogrammed RT address or the command is a broadcast command. If a valid command is received on Bus A, the RCVA signal goes high to notify the host. Similarly, when a valid command arrives on Bus B, the RCVB signal goes high. The received command may be read from the appropriate Command Word register, or the Message register may be read to quickly determine the type of response needed. The RT protocol sequencer will initiate a response in accordance with the requirements of MIL-STD-1553. If the message type requires a Status Word response and the bus TR bit is set in the Control Register, the HI-6110 RT will automatically transmit its Status Word approxinmately 7 to 9 5uS after RCVA or RCVB goes high. The Status Word register can be modified up to 1.3 uS past midsync, occurring when the Status Word is transmitted. If transmit data words are part of the command response, the automatic response delay provides time for the host to load the Transmit Data FIFO. The first data word must be written to the FIFO not later than 20 uS after Status Word mid-sync. All data words must be written before mid-sync occurring within its transmission window. All data words may be written in rapid succession once RCVA or RCVB goes high. Upon error-free completion of the message, VALMESS goes high. (One exception: broadcast mode code commands without mode data word do not generate VALMESS.) If an error is detected, VALMESS remains low and the ERROR signal goes high. The ERROR register can be read to determine error type. In applications requiring illegal command detection, the HI-6110 readily handles command "illegalization". Upon detecting an illegal command, the host microcontroller takes steps to (a) send the Remote Terminal Status Word with the Message Error (ME) bit set (non-broadcast commands only), and (b) suppress transmission of any data words associated with the normal response to the command. For part (a), the Status Word register is modified by setting the ME bit. This is done first to make sure the change is effective before Status Word transmission begins. For part (b), bit 13 in the Control Register is set to suppress data word transmission. NOTE: Once bit 13 is set in the Control register, the affected message will NOT conclude with VALMESS or ERROR assertion. Control Register bit 13 should be written to a zero before the next message is processed. The host might perform the Control Register write as part of the RCV flag service routine in order to restore normal operation for legal commands. The Receive Data FIFO is cleared at Master Reset, or by performing a series of FIFO read operations until FFEMPTY goes high. The Receive Data FIFO will not accept new receive data when full. When the Control Register is written to change the active bus, the HI-6110 automatically resets any message in process on the former bus and begins a new message sequence on the new bus. To comply with RT response time limits, it is typically necessary to write the Control Register within 2 uS of the rising edge of the RCV flag on the alternate bus. Note that when the active bus is switched, the RT message sequencer retrieves and responds to the last valid command word received on the previously inactive bus. This applies regardless of when the command word was received. For this reason, bus switching should only occur in response to a current RCV or RCVCMD signal or otherwise be followed by a master reset. The HI-6110 readily handles superseding commands. For superseding commands on the same bus as described in 5.2.1.4 of the RT Validation test, the 6110 will generate a new RCV flag upon receiving a valid command after a 4 uS gap. The message sequencer is automatically reset and the new sequence initiated. RT validation section 5.2.1.8 "Bus Switching" tests a condition otherwise prohibited by the 1553 standard: overlapping valid commands on the two buses. To meet the requirements of this test, certain steps are required: (a) When switching buses for the superseding command, reset Control Register TRA and TRB bits for 200 nS minimum before setting the TRx bit for the newly active bus. This resets transmission for an in-process command response. To simplify the software, the example software does this for all bus switching. (b) The RT should always respond to the command occurring last. A potential problem occurs when an RTRT receive command is interrupted by a valid command on the other bus. Although CW1 is valid for the remote terminal, RCV for all RT-RT commands occurs after CW1 and CW2 are both received. When a valid command that overlaps CW1 occurs on the other bus, its RCV will go high before the RT-RT RCV. The overlapping command occurs later, although its RCV precedes the RT-RT RCV. The RT-RT RCV must be ignored. To correctly respond to the overlapping command, the software must utilize the RCVCMDA and RCVCMDB signals as described below. Please refer to the software example in the reference design for a working implementation. The RCVCMDA output goes high when a valid non-mode receive command is decoded on Bus A. The RCVCMDB signal performs the same function for Bus B. Successful compliance with RT validation 5.2.1.8 "Bus Switching" requires host interaction when RCVCMD is asserted for the inactive bus. When this occurs, the host should immediately make that bus active. If an ordinary receive command is coming from the Bus Controller, RCV for the newly-active bus will go high about 4 uS after RCVCMD. If an RTRT receive command, RCV follows RCVCMD by 20 uS. In either case once RCV is asserted, the RT can begin polling FFEMPTY to acquire received data words as they arrive.
HOLT INTEGRATED CIRCUITS 17
HI-6110 (REMOTE TERMINAL MODE)
EXAMPLE RT MIL-STD-1553 MESSAGE SEQUENCES Example 1. BC TO RT Transfer
The HI-6110 RT receives a Receive Command with 3 data words from the MIL-STD-1553 bus. The HI-6110 captures the message data words and outputs a status word.
Host Read and Decode Message Host Change Bus if required Host Read Data FIFO (Data Word 3) Host Read Data FIFO (Data Word 2) Host Read Data FIFO (Data Word 1) Host Write SW (Status Word), Optional
STR MIL-STD-1553 Bus
Receive Command Data Word 1 Data Word 2 Data Word 3 Status Word
From MIL-STD-1553 bus VALMESS RCVCMDA/B RCVA/B FFEMPTY
From HI-6110 RT
Example 2. RT TO BC Transfer
Host Write Data FIFO (Data Word 2) Host Write Data FIFO (Data Word 1) Host Write SW (Status Word), Optional Host Read CW1 (Command Word) Host Read and Decode Message Register
The HI-6110 RT receives a Transmit Command with 2 data words from the MIL-STD-1553 bus. The host controller HI-6110 RT reads the Command Word to determine number of data words, and updates the Status Word register and the requested number of data words.
STR MIL-STD-1553 Bus
Transmit Command Status Word Data Word 1 Data Word 2
From MIL-STD-1553 bus VALMESS RCVA/B FFEMPTY
From HI-6110 RT
Example 3. RT to RT Transfer, HI-6110 is the transmitting RT
Host Write Data FIFO (Data Word 1) Host Write SW (Status Word), Optional Host Read CW2 (Transmit Command) Host Read and Decode Message Register
The HI-6110 RT receives an RT to RT transfer with 2 data words command from the MIL-STD-1553 bus. In this case, the HI-6110 is the transmitting RT. The HI-6110 issues the necessary Status Word and Data Words, and monitors the acknowledging Status Word from the receiving RT.
Host Read SWR (Status Word Received) Host Write Data FIFO (Data Word 2)
STR MIL-STD-1553 Bus
Receive Command Transmit Command Status Word 1 Data Word 1 Data Word 2 Status Word 2
From MIL-STD-1553 bus VALMESS RCVA/B FFEMPTY
From HI-6110 RT
From Receiving RT
HOLT INTEGRATED CIRCUITS 18
HI-6110 (REMOTE TERMINAL MODE)
EXAMPLE RT MIL-STD-1553 MESSAGE SEQUENCES Example 4. RT to RT Transfer, HI-6110 is the receiving RT
The HI-6110 RT receives an RT to RT transfer with 2 data words command from the MIL-STD-1553 bus. In this case, the HI-6110 is the receiving RT. The HI-6110 captures the message data and issues the necessary Status Word. In this particular example, the host did not update the Status Word Register and the HI-6110 reissues the last value of SW.
Host Read Data FIFO (Data Word 1) Host Read Data FIFO (Data Word 2)
Host Read and Decode Message Host Change Bus if required
STR MIL-STD-1553 Bus
Receive Command Transmit Command Status Word 1 Data Word 1 Data Word 2 Status Word 2
From MIL-STD-1553 bus VALMESS RCVCMDA/B RCVA/B FFEMPTY
From Transmitting RT
From HI-6110 RT
Example 5. Mode Code Command without Data Word
Host Write SW (Status Word) Host Read CW1 (Command Word) Host Read and Decode Message Register
The HI-6110 RT receives a Mode Code Command without Data Word from the MIL-STD-1553 bus. The correct Status Word is output. In this example, the host updates the Status Word register prior to RT response. The Status Word update must be completed within 5uS after the RCVA/B rising edge. If no host write is performed, the HI-6110 will output the current value of the
STR MIL-STD-1553 Bus
Mode Code Command Status Word
From MIL-STD-1553 bus VALMESS RCVA/B FFEMPTY
From HI-6110 RT
Example 6. Mode Code with Data Word (Transmit)
Host Write MODE (Mode Data) Host Write SW (Status Word) Host Read CW1 (Control Word) Host Read and Decode Message Register
The HI-6110 RT receives a Mode Command with Data Word (Transmit) from the MIL-STD-1553 bus. The required Status Word and Mode Data Word are transmitted by the HI-6110 RT. In this particular example, the host updates both the Status Word and Mode Data registers prior to RT response. A Status Word update must be completed within 5uS after the RCVA/B rising edge. If no host writes are performed, the HI-6110 will output the current values of the SW register and Mode Data register.
STR
Mode Code Command Status Word Mode Data
MIL-STD-1553 Bus
From MIL-STD-1553 bus VALMESS RCVA/B FFEMPTY
From HI-6110 RT
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HI-6110 (REMOTE TERMINAL MODE)
EXAMPLE RT MIL-STD-1553 MESSAGE SEQUENCES Example 7. Mode Code with Data Word (Receive)
The HI-6110 RT receives a Mode Command with Data word (Receive) from the MIL-STD-1553 bus. The correct Status Word is returned and the host reads the Mode Data value. In this particular example, the host reads the Message Register to determine what type of MIL-STD-1553 command was received. A default value is used for the Status Word response.
Host Read MODE (Receive Mode Data)
Host Read and Decode Message Register
STR MIL-STD-1553 Bus
Mode Code Command Mode Data Status Word
From MIL-STD-1553 bus VALMESS RCVA/B FFEMPTY
From HI-6110 RT
Example 8. Broadcast BC to RT Transfer
The HI-6110 RT receives a Broadcast Receive Command with 3 data words from the MIL-STD-1553 bus. No Status Word is returned.
Host Read and Decode Message Host Change Bus if required
Host Read Data FIFO (Data Word 3) Host Read Data FIFO (Data Word 2)
Host Read Data FIFO (Data Word 1)
STR
MIL-STD-1553 Bus
Receive Command
Data Word 1
Data Word 2
Data Word 3
VALMESS RCVCMDA/B RCVA/B FFEMPTY
Example 9. Broadcast RT to RT Transfer HI-6110 is the transmitting RT
Host Write Data FIFO (Data Word 1) Host Write SW (Status Word) Host Read CW2 (Transmit Command) Host Read and Decode Message Register
The HI-6110 RT receives a Broadcast RT to RT transfer Command with 2 data words from the MIL-STD-1553 bus. The HI-6110 RT is the transmitter. Note that RCVA/B doesn't go high until the Transmit Command matching the HI-6110 RT address is received. The HI-6110 broadcasts the message and does not wait for a Status Word to be returned.
Host Write Data FIFO (Data Word 2)
STR
MIL-STD-1553 Bus
Receive Command
Transmit Command
Status Word 1
Data Word 1
Data Word 2
From MIL-STD-1553 bus VALMESS RCVA/B FFEMPTY
From HI-6110 RT
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HI-6110 (REMOTE TERMINAL MODE)
EXAMPLE RT MIL-STD-1553 MESSAGE SEQUENCES Example 10. Broadcast RT to RT Transfer, HI-6110 is the receiving RT
The HI-6110 RT receives a Broadcast RT to RT transfer Command with 2 data words from the MIL-STD-1553 bus. The HI-6110 RT is the receiver. The HI-6110 captures the message which is read by the host. A Status Word is not transmitted.
Host Read Data FIFO (Data Word 2) Host Read Data FIFO (Data Word 1)
Host Read and Decode Message Host Change Bus if required
STR MIL-STD-1553 Bus
Receive Command Transmit Command Status Word 1 Data Word 1 Data Word 2
From MIL-STD-1553 bus VALMESS RCVCMDA/B RCVA/B FFEMPTY
From transmitting RT
Example 11. Broadcast Mode Code without Data Word
Host Read CW1 (Command Word)
The HI-6110 RT receives a Broadcast Mode Command without Data word from the MIL-STD-1553 bus. The Mode Command Word is read by the host. Note:The RCV signal pulse is less than 1 uS wide, and Message Register flag is cleared at the same time.
STR MIL-STD-1553 Bus
Mode Code Command
From MIL-STD-1553 bus VALMESS RCVA/B FFEMPTY
Example 12. Broadcast Mode Code with Data Word
The HI-6110 RT receives a Broadcast Mode Command with Data word from the MIL-STD-1553 bus. The host reads the Mode Data word received.
Host Read MODE (Mode Data) Host Read CW1 (Command Word)
STR MIL-STD-1553 Bus
Mode Code Command Mode Data
From HI-6110 BC VALMESS RCVA/B FFEMPTY
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HI-6110 (BUS MONITOR MODE)
BUS MONITOR
The HI-6110 may be configured as Bus Monitor with or without an assigned RT address. Resetting both BCMODE and RTMODE to "0" configures the HI-6110 as a Bus Monitor with assigned RT address (MT/RT mode). Setting both BCMODE and RTMODE to "1" configures the HI-6110 as a Bus Monitor without an RT address (MT mode). In either Mode, the HI-6110 captures all information that occurs on the selected MIL-STD-1553 bus. All bus transactions are checked for errors. If a message sequence is good, the VALMESS signal is asserted at the end of the message. If an error occurs, ERROR is asserted. The host may interrogate the ERROR Register to determine the nature of the error. Command Words, Status Words, Message Data and Mode Words are captured for all bus transactions and may be read by the host. In MT/RT mode, the HI-6110 will respond to all MIL-STD-1553 messages with assigned RT address matching the pinprogrammed RT address. All conditions pertinent to RT responses are described in the previous Remote Terminal Mode section of this document. In MT mode (no assigned RT address), the HI-6110 does not transmit information to the MIL-STD-1553 bus and acts as a passive monitor as described by the MIL-STD-1553 specification. Figure 3 represents the HI-6110 in MT mode.
INITIALIZATION
In Bus Monitor mode, the user must first perform a Master Reset to initialize the MT protocol engine and clear all message registers and data FIFOs. This may be achieved by pulsing the MR input high, or writing a "1" to Control Register bit 0. The user must select a master clock (CLK) frequency by programming Control Register bits 11 and 12. Refer to the MT Register Formats section for a full description of available registers and their functions in Bus Monitor Mode.
Receiver Serial to Parallel Manchester Decoder
BUSA
Bus A
BUSA
Bus A Word
D15-D0
Command Word 1 Host Data Interface Command Word 2
CS R/W STR RA3-RA0 FFEMPTY
RX DATA FIFO
Mode Data (R) Status Word Rec'd Receiving Status Word (RT-RT)
Bus B Word Receiver Serial to Parallel Manchester Decoder
BUSB VALMESS ERROR RFLAG RCVA RCVB RCVCMDA RCVCMDB CLK MR BCSTART BCMODE RTMODE BUSB
Bus B
Status Register Message Status Control Register MT Error Register MT Protocol Engine Message Register Protocol Control
Figure 3. Block Diagram - Bus Monitor (without assigned RT address) Mode
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HI-6110 (BUS MONITOR MODE)
REGISTER FORMATS (MT Mode)
CONTROL REGISTER (R/W) Write Address: X1XX, Read Address: 1100
se d s ot ed U C se LK d R SE es L e R rve A3 d R A2 R A1 R A0 R ER MR R B M R A RT M BC OD ME N OD ot UE M se Rd U U
X
X
X
0 8 7 6 5 4 3 2
X 1 0 LSB
MSB 15 14 13 12 11 10 9
The Control Register value specifies HI-6110 operating mode, clock frequency and specifies which bus is enabled for monitoring. Control Register bits can also be used for addressing registers in read/write operations, or to assert master reset.
ot N
N
BIT 15-13 12
NAME CLKSEL
11 10 - 7
6
5-4
3-2
1 0
FUNCTION Not used in MT mode. Selects the frequency of the HI-6110 external CLK input, as follows: CLKSEL Value 0 24 MHz 1 12 MHz Reserved Must be reset to "0" RA3:0 Register Address for HI-6110 register and data read / write operations. The register address is defined by the logical OR of these bits and their corresponding input pins. Setting Control Register bits 10:7 to 0000 ensures that just the address input pins control register addressing. RERR Reset ERROR. If RERR is low the ERROR output signal is only reset on reception of a new valid command. Setting RERR high (rising edge) resets a high ERROR output . If the RERR bit is left high, ERROR outputs will automatically reset after 3 to 4 microseconds. For normal operation, this bit is set to "1". MRB, MRA Setting either MRA or MRB to "1"connects the protocol engine to Monitor BUS A or Monitor BUS B. Setting both MRA and MRB selects neither bus. The 1553 receiver, Manchester decoder and RCV output signal remain operational on the inactive bus. When the monitor terminal receives a command on the inactive bus, its RCV signal output goes high. The MT must switch active buses so received data words, message results, etc. will be stored in the proper registers. Valid words received on the inactive bus can be read without changing active bus by reading the Bus A Word or Bus B Word Register, but any received message words, errors, message results etc. are not updated if the bus is not enabled by setting the appropriate MRA or MRB bit. RTMODE, HI-6110 mode select. These Control Register bits are logically OR'ed with their corresponding input pins. The BCMODE user can select 1553 operating mode under either hardware or software control: RTMODE BCMODE 1553 OPERATING MODE 0 1 Bus Controller (BC) 1 0 Remote Terminal (RT) 1 1 Bus Monitor without assigned RT address (MT) 0 0 Bus Monitor with assigned RT address (RT-MT) in which Control Register bits 5:4 enable transmit for valid commands for which command terminal address matches the assigned Remote Terminal address. See the RT mode section. Not used in MT mode. MR Master Reset. Writing "1" and then "0" to this bit performs the same function as pulsing the MR pin. All register and data FIFOs are cleared when master reset is asserted. The Control Register is the exception; it is not affected by Master Reset.
RECEIVE DATA FIFO (Read only) Read Address: 0100
MIL-STD-1553 Message Data Word 15:0 15 14 13 12 11 10 9 MSB 8 7 6 5 4 3 2 1 0 LSB
N
ot
The Receive Data FIFO is 32-words deep and holds all MILSTD-1553 received data words. The FIFO is cleared at Master Reset. A low FFEMPTY flag (output pin or Status register bit) means FIFO data is available to be read by the host. Successive data word fetches will cause FFEMPTY to go high when the last data word is read.
BUS A WORD REGISTER (Read only) Read Address: 1001 BUS B WORD REGISTER (Read only) Read Address: 1010
Bus A/B Word 15:0
In MT mode, the Bus A Word register holds the last valid MILSTD-1553 word received on Bus A. The Bus B Word register holds the last valid MIL-STD-1553 word received on Bus B.
5 4 3 2 1 0 LSB
MSB 15 14 13 12 11 10 9
8
7
6
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HI-6110 (BUS MONITOR MODE)
MT OPERATION
STATUS WORD 1 REGISTER (Read only) Read Address: 1000
es In sag st e r E Se um rro rv e n t r ic a t e R io n eq R es ue er st ve d Br oa Bu dca sy st C Su om bs m ys D an yn te d am m R Te i F ec rm c B la g ei ve in u s al d Fl Co a g nt ro lA cc ep ta nc e
R MSB 15 14 13 12 11 10 9 8 7 R 6 R 5 4 3 2 1 0 LSB 0 8 7 6 5 4 3 2 1 0 LSB
RT Address
For non-broadcast single-RT commands, the Status Word 1 register holds the MIL-STD-1553 Status Word transmitted by the RT. For non-broadcast RT-RT commands, the Status Word 1 register holds the MIL-STD-1553 status word send by the receiving remote terminal.
STATUS WORD 2 REGISTER (Read only) Read Address: 0011
es In sag st e r E Se um rro rv ent r ic at e R ion eq R es ue er st ve d Br oa Bu dca sy st C Su om bs m ys D an yn te d am m R Te i F ec rm c B lag ei ve in us al d Fl Co ag nt ro lA cc ep ta nc e
R MSB 15 14 13 12 11 10 9 8 7 R 6 R 5 4 3 2 1 0 LSB
RT Address
M
M
Used only for RT to RT messages, the Status Word 2 register holds the MIL-STD-1553 status word sent by the transmitting remote terminal.
STATUS REGISTER (Read only) Read Address: 0101
The Status Register may be interrogated by the host at any time. It provides information that allows the user to determine whether the HI-6110 MT is busy monitoring an active MILSTD-1553 message and its progress. After a message sequence has completed, the Status register indicates whether an error was detected or if the message sequence was successful.
R VA OR LM RE F1 S S R F0 R FL FF AG EN R MP CT VY RB C V ID A LE
Not used 0 0 0 0 0 0
MSB 15 14 13 12 11 10 9
BIT 15- 9 8
NAME ERROR
7
VALMESS
6 5 4
RF1 RF0 RFLAGN
3
FFEMPTY
2 1 0
RCVB RCVA IDLE
FUNCTION Not used. These bits are set to "0". This bit is set to "0" after reset or when the last MIL-STD-1553 message sequence was valid. ERROR is set to a "1" if the last sequence had an error. The nature of the message error can be determined by examining the Error Register. The ERROR output pin reflects the state of this bit. This bit is a "0" after reset or the last MIL-STD-1553 message contained an error. VALMESS goes high on the completion of an error-free MIL-STD-1553 message sequence. VALMESS is reset to a zero each time new valid Command Word is received by the RT. The VALMESS output pin reflects the state of this bit. Register address bit 1 for the last written word register. Register address bit 0 for the last written word register. Goes low when a new MIL-STD-1553 Command Word is received by the RT, or a Status Word is received from the receiving RT during an RT - to - RT transfer. RFLAGN returns high momentarily upon the receipt of any new 1553 word. The RFLAG output reflects the state of this bit. If "0" then the receive Data FIFO contains at least one word of data. This bit is set to a "1" on reset, or when the user has read all available received data words from the receiver Data FIFO. The FFEMPTY output pin reflects the state of this bit. Set to a "1" upon receipt of a valid Command Word. The RCVB output pin mirrors the state of this bit. Set to a "1" upon receipt of a valid Command Word. The RCVA output pin mirrors the state of this bit. If "1" then the RT is idle. This bit is a zero throughout the time the RT is processing a valid MIL-STD-1553 Command. message. The bit returns to a "1" when the message is completed.
ER
HOLT INTEGRATED CIRCUITS 24
HI-6110 (BUS MONITOR MODE)
MT OPERATION
ERROR REGISTER (Read only) Read Address: 0111
The RT Error Register is cleared at reset and on receipt of a valid MIL-STD-1553 Command Word. If an error is encountered during message execution, the ERROR pin goes high, the ERROR bit is set in the Status Register, and one or more bits are set in the Error Register. The host may interrogate the Error register at any time to determine the type of error encountered.
RT P N AR ot ER U FF se R ER d NR ot U O se Cd N G ER AP R C ER WR E SY RR N M CE AN R R N ER OR R C V
0 0 0 8 7 0 6 5 4 3 2 1 0 LSB
Not used 0 0 0 0
MSB 15 14 13 12 11 10 9
BIT 15- 10 9 8 7 6 5 4 3 2 1 0
NAME RTPARERR FFERR CONERR GAPERR WCERR SYNCERR MANERR NORCV
FUNCTION Not used. These bits are set to "0". RT Parity Error: There is a parity error in the pin-programmed RT address of this RT. Not used. This bit is set to "0". Data was not available in the Transmit Data FIFO. Not used. This bit is set to "0". Contiguous Message Error: Transmission was not contiguous. Bus activity was detected in the 4.0 uS gap after a valid message was completed. Word Count Error. Sync Error: Expected Command Sync and got Data Sync, or vice versa. Manchester Encoding Error: The decoder detected an error in Manchester encoding, bit count or parity. This bit is set when a data word is expected while processing a receive command, but a gap is detected. It is also set when an RT-to-RT "No Response Timeout" occurs, as defined per MIL-HDBK-1553, Figure 8 "RT-RT Timeout Measurement". The HI-6110 asserts this error when the bus dead-time between the RTRT command pair and the transmit RT Status Word exceeds 15 uS.
MESSAGE REGISTER (Read only) Read Address: 0110
Not Used 0 0 13 12 11 10 9
Message Type Flags 8 8 7 7 6 6 5 5 4 4 3 3 2 2 1 1 0 0 LSB
The Message Register identifies command type when a new valid command is received from the MIL-STD-1553 bus controller. When a valid command is received, message type is decoded and appropriate Message Register bit(s) are set. Register bits 5 and 13 are mirrored. Broadcast commands occur when Command Word bits 15:11 = 11111. Values other than 11111 indicate the Remote Terminal address for a non-broadcast command. Message Register bit 10 is set for any mode code or transmit command. This enables detection of the three undefined mode code command types listed under Bit 10 below. Command Word 2 Bit Fields
MSB 15 14 13 12 11 10 9
Hex 0001 0080 0004 0100 0402
Last Valid Command Decoded
Command Word 1 Bit Fields 15:11 RTA 11111 RTA 11111 RTA RTA 11111 RTA 11111 RTA 11111 RTA 11111 10 0 0 0 0 1 1 1 0 0 1 1 0 0 9:5 00001 -11110 00001 -11110 00001 -11110 00001 -11110 00001 -11110 0000 or 11111 0000 or 11111 0000 or 11111 0000 or 11111 0000 or 11111 0000 or 11111 0000 or 11111 0000 or 11111
NON-MODE COMMANDS Receive command from BC, not broadcast Receive command from BC, broadcast RT-RT command, not broadcast RT-RT command, broadcast Transmit command, RT to BC MODE CODE COMMANDS 0410 MC0 - MC15 T/R=1 no mode data, not broadcast 0400 * MC0 - MC15 T/R=1 no mode data, broadcast 0410 MC0 - MC15 T/R=0 not broadcast, UNDEFINED 0400 MC0 - MC15 T/R=0 broadcast , UNDEFINED 2420 MC16 - MC31 T/R=1 mode data, not broadcast 0400 * MC16 - MC31 T/R=1 broadcast , UNDEFINED 0040 MC16 - MC31 T/R=0 mode Data, not broadcast 0800 MC16 - MC31 T/R=0 mode data, broadcast * Two cases where 0400 is reset 550nS after RCV
4:0 15:11 10 9:5 4:0 XXXXX XXXXX XXXXX XXXXX 1 00001-11110 XXXXX XXXXX not RTA 1 00001-11110 XXXXX XXXXX 0XXXX 0XXXX 0XXXX 0XXXX 1XXXX 1XXXX 1XXXX 1XXXX Command Word 2 only applies for RT-RT commands
HOLT INTEGRATED CIRCUITS 25
HI-6110 (BUS MONITOR MODE)
MT OPERATION
COMMAND WORD 1 REGISTER (Read only) Read Address: 0000
RT Address Subaddress / Mode Data Word Count / Mode Code
For all commands except RT to RT, the Command Word 1 register contains the last valid Command Word received. When RCV is asserted, if Message Register bit 2 or bit 8 is set, the new message is RT to RT. The Command Word 1 register holds the first (receive) command and the Command Word 2 Register holds the second (transmit) command.
MSB 15 14 13 12 11 10 9
T/ R
8
7
6
5
4
3
2
1
0 LSB
COMMAND WORD 2 REGISTER (Read only) Read Address: 0001
Subaddress / Mode Data Word Count / Mode Code
T/ R
RT Address
The Command Word 2 register contains the second (transmit) command word from the last RT-RT message. (See note above for Command Word 1.)
LSB
MSB 15 14 13 12 11 10 9
8
7
6
5
4
3
2
1
0
Whenever RCV is asserted, RT-RT messages can be detected by checking Message Register bits 2 and 8.
RECEIVE MODE DATA REGISTER (Read only) Read Address: 0010
Mode Data Word 15:0 15 14 13 12 11 10 9 MSB 8 7 6 5 4 3 2 1 0 LSB
The read-only Receive Mode Data Register holds the Mode Code Data Word received during a Mode Code with Data Word (Receive) Command.
BUS MONITOR OPERATION (MT mode)
When configured as a Bus Monitor with no assigned RT address, the HI-6110 continuously monitors the selected MIL-STD-1553 bus and passively captures all bus traffic. The HI-6110 never transmits information onto the bus. When a Command Word is received, a validation check is performed. If the Command Word contains no errors, the RFLAG pin goes low and the HI-6110 MT captures the complete message in its internal registers and Receiver Data FIFO as appropriate. If the valid Command Word was received on Bus A, the RCVA signal goes high to notify the host that a new message has commenced. The RCVB pin is asserted when the valid Command Word arrived on Bus B. The Command Word may be read from the Command Word 1 register, or the Message register can be read to directly learn the type of command received.
BUS MONITOR OPERATION (MT/RT mode)
When configured as a Monitor with assigned RT address, the HI6110 responds to all commands that match its hard-wired RT address as described in the RT section of this data sheet. All other bus traffic is monitored as described in this MT section.
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HI-6110 (BUS MONITOR MODE)
EXAMPLE MT MIL-STD-1553 MESSAGE SEQUENCES Example 1. BC TO RT Transfer
The HI-6110 MT monitors a Receive Command with 3 data words fon the MIL-STD-1553 bus. The HI-6110 captures the message data words and does not respond to the bus.
Host Read CW1 (Command Word) Host Read Status Word Received Host Read Data FIFO (Data Word 3) Host Read Data FIFO (Data Word 2) Host Read Data FIFO (Data Word 1)
STR MIL-STD-1553 Bus
Receive Command Data Word 1 Data Word 2 Data Word 3 Status Word
From Bus Controller VALMESS RCVCMDA/B RCVA/B FFEMPTY
From responding RT
Example 2. RT TO BC Transfer
The HI-6110 MT monitors a Transmit Command with 2 data words on the MIL-STD-1553 bus. The HI-6110 MT captures the Command Word from the BC and the Status Word and Message Data from the responding RT.
Host Read CW1 (Command Word) Host Read Data FIFO (Data Word 2) Host Read Data FIFO (Data Word 1) Host Read Status Word Received
STR MIL-STD-1553 Bus
Transmit Command Status Word Data Word 1 Data Word 2
From Bus Controller VALMESS RCVA/B FFEMPTY
From responding RT
Example 3. RT TO RT Transfer
The HI-6110 MT monitors an RT to RT transfer with 2 data words command on the MIL-STD-1553 bus. The HI-6110 captures the message data and the Status Words from both the transmitting and Receiving RTs.
Host Read CW2 (Transmit Command) Host Read CW1 (Receive Command)
Host Read Receiving Status Word (SW2) Host Read SWR (Status Word 1) Host Read Data FIFO (Data Word 2) Host Read Data FIFO (Data Word 2)
STR MIL-STD-1553 Bus
Receive Command Transmit Command Status Word 1 Data Word 1 Data Word 2 Status Word 2
From Bus Controller VALMESS RCVCMDA/B RCVA/B FFEMPTY
From Transmitting RT
From Receiving RT
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HI-6110 (BUS MONITOR MODE)
EXAMPLE MT MIL-STD-1553 MESSAGE SEQUENCES Example 4. Mode Code Command without Data Word
The HI-6110 MT monitors a Mode Code Command on the MILSTD-1553 bus. The responding RT's correct Status Word is captured.
Host Read CW1 (Command Word)
Host Read Status Word Recived
STR MIL-STD-1553 Bus
Mode Code Command Status Word
From Bus Controller VALMESS RCVA/B FFEMPTY
From responding RT
Example 5. Mode Code with Data Word (Transmit)
The HI-6110 MT monitors a Mode Command with Data word (Transmit) on the MIL-STD-1553 bus. The Status Word and Mode Data Word from the responding RT are captured and read by the host.
Host Read CW1 (Control Word)
Host Read MODE (Mode Data) Host Read Status Word Received
STR
Mode Code Command Status Word Mode Data
MIL-STD-1553 Bus
From Bus Controller VALMESS RCVA/B FFEMPTY
From responding RT
Example 6. Mode Code with Data Word (Receive)
The HI-6110 MT monitors a Mode Command with Data word (Receive) on the MIL-STD-1553 bus. The Mode Data Word from the BC and the Status Word from the responding RT are captured by the HI-6110 MT and read by the host.
Host Read MODE (Mode Data) Host Read Message Register Host Read Status Word Received
STR MIL-STD-1553 Bus
Mode Code Command Mode Data Status Word
From Bus Controller VALMESS RCVA/B FFEMPTY
From responding RT
HOLT INTEGRATED CIRCUITS 28
HI-6110 (BUS MONITOR MODE)
EXAMPLE MT MIL-STD-1553 MESSAGE SEQUENCES Example 7. Broadcast BC to RT Transfer
The HI-6110 MT monitors a Broadcast Receive Command with 3 data words on the MIL-STD-1553 bus. The message data is captured and read by the host
Host Read CW1 (Command Word)
Host Read Data FIFO (Data Word 3) Host Read Data FIFO (Data Word 2)
Host Read Data FIFO (Data Word 1)
STR
Receive Command Data Word 1
Data Word 2 Data Word 3
MIL-STD-1553 Bus
From Bus Controller VALMESS RCVCMDA/B RCVA/B FFEMPTY
Example 8. Broadcast RT to RT Transfer
The HI-6110 MT monitors a Broadcast RT to RT transfer Command with 2 data words on the MIL-STD-1553 bus. The HI6110 MT captures the message data and the Status Word from the transmitting RT. Note the behavior of the FFEMPTY signal when the first data word is read, temporarily emptying the FIFO, before message completion.
Host Read Data FIFO (Data Word 1) Host Read Status Word Received Host Read Data FIFO (Data Word 2)
Host Read CW2 (Transmit Command) Host Read CW1 (Receive Command)
STR
MIL-STD-1553 Bus
Receive Command
Transmit Command
Status Word 1
Data Word 1
Data Word 2
From Bus Controller VALMESS RCVCMDA/B RCVA/B FFEMPTY
From transmitting RT
Example 9. Broadcast Mode Code without Data Word
Host Reade CW1 (Command Word)
The HI-6110 MT monitors a Broadcast Mode Command without Data word on the MIL-STD-1553 bus. The Mode Command Word is read by the host
STR MIL-STD-1553 Bus
Mode Code Command
From Bus Controller VALMESS RCVA/B FFEMPTY
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HI-6110 (BUS MONITOR MODE)
EXAMPLE MT MIL-STD-1553 MESSAGE SEQUENCES Example 11. Broadcast Mode Code with Data Word
The HI-6110 RT receives a Broadcast Mode Command with Data word from the MIL-STD-1553 bus. The host reads the Mode Data word received.
Host Read MODE (Mode Data) Host Read CW1 (Command Word)
STR MIL-STD-1553 Bus
Mode Code Command Mode Data
From HI-6110 BC VALMESS RCVA/B FFEMPTY
DATA BUS TIMING DIAGRAMS
DATA BUS TIMING - WRITE
REG ADDR
VALID
DATA BUS TIMING - READ
REG ADDR
VALID
tAWS tSTR
STR
tAWH
tARS tSTR
STR
tARH
tDWS tDWH
DATA BUS
VALID
tDRS
DATA BUS
VALID
tDRH
tCSWS tCSWH
CS CS
tCSRS
tCSRH
tRWWS tRWWH
R/W R/W
tRWRS tRWRH
Figure 4.
Refer to AC Electrical Characteristics Table
Figure 5.
Refer to AC Electrical Characteristics Table
HOLT INTEGRATED CIRCUITS 30
HI-6110 ABSOLUTE MAXIMUM RATINGS
Supply voltage (VDD) Logic input voltage range Receiver differential voltage Driver peak output current Power dissipation at 25C Solder Temperature Junction Temperature Storage Temperature -0.3 V to +5 V -0.3 V DC to +3.6 V 10 Vp-p Temperature Range +1.0 A 1.0 W 275C for 10 sec. 175C -65C to +150C NOTE: Stresses above absolute maximum ratings or outside recommended operating conditions may cause permanent damage to the device. These are stress ratings only. Operation at the limits is not recommended. Industrial Screening.........-40C to +85C Hi-Temp Screening........-55C to +125C
RECOMMENDED OPERATING CONDITIONS
Supply Voltage VDD....................................... 3.3V... 5%
DC ELECTRICAL CHARACTERISTICS
VDD = 3.3 V, GND = 0V, TA = Operating Temperature Range (unless otherwise specified).
PARAMETER
Operating Voltage Total Supply Current
SYMBOL
VDD ICC1 ICC2 ICC3
CONDITION
Not Transmitting Transmit one channel @ 50% duty cycle Transmit one channel @ 100% duty cycle Not Transmitting Transmit one channel @ 100% duty cycle Digital inputs Digital inputs Digital inputs Digital inputs Digital inputs and data bus IOUT = -1.0mA, Digital outputs IOUT = 1.0mA, Digital outputs
MIN
3.15
TYP
3.30 4 225 425
MAX
3.45 10 250 500 0.06
UNITS
V mA mA mA W W VDD
Power Dissipation
PD1 PD2
0.3 70%
0.5
Min. Input Voltage Max. Input Voltage Min. Input Current Max. Input Current
(HI) (LO) (HI) (LO)
VIH VIL IIH IIL IPUD VOH VIH
30% 20 -20 275 90% 10%
VDD A A A VDD VDD
Pull-Up / Pull-Down Current Min. Output Voltage Max. Output Voltage RECEIVER Input resistance Input capacitance Common mode rejection ratio Input Level Input common mode voltage Threshold Voltage - Direct-coupled Detect No Detect Theshold Voltage - Transformer-coupled = Detect (HI) (LO)
(Measured at Point "AD" in Figure 6 unless otherwise specified) RIN CIN CMRR VIN VICM VTHD VTHND VTHD VTHND 1 Mhz Sine Wave (Measured at Point "AD" in Figure 6) 1 MHz Sine Wave (Measured at Point "AT" in Figure 7) Differential -5.0 1.15 Differential Differential 40 9 5.0 20.0 0.28 0.86 14.0 0.20 20 5 Kohm pF dB Vp-p V-pk Vp-p Vp-p Vp-p Vp-p
No Detect
HOLT INTEGRATED CIRCUITS 31
HI-6110
DC ELECTRICAL CHARACTERISTICS (cont.)
VDD = 3.3 V, GND = 0V, TA = Operating Temperature Range (unless otherwise specified)
PARAMETER
TRANSMITTER Output Voltage
SYMBOL
CONDITION
MIN
TYP
MAX
UNITS
(Measured at Point "AD" in Figure 6 unless otherwise specified) Direct coupled Transformer coupled VOUT VOUT VON Direct coupled VDYN VDYN ROUT COUT 35 ohm load 70 ohm load (Measured at Point "AT" in Figure 7) Differential, inhibited 35 ohm load 70 ohm load (Measured at Point "AT" in Figure 7) Differential, not transmitting 1 MHz sine wave -90 -250 10 15 6.0 18.0 9.0 27.0 10.0 90 250 Vp-p Vp-p mVp-p mV mV Kohm pF
Output Noise Output Dynamic Offset Voltage
Transformer coupled Output Resistance Output Capacitance
AC ELECTRICAL CHARACTERISTICS
VDD = 3.3 V, GND = 0V, TA = Operating Temperature Range (unless otherwise specified)
PARAMETER
TRANSMITTER Rise time Fall Time Inhibit Delay
SYMBOL
tr tf tDI-H tDI-L
TEST CONDITIONS
35 ohm load 35 ohm load Inhibited output Active output
MIN
100 100
TYP
-----
MAX
300 300 100 150
UNITS
ns ns ns ns
(Measured at Point "AD" in Figure 6)
PARAMETER
DATA BUS TIMING - WRITE Strobe STR Pulse Width Address Write Setup Time Address Write Hold Time Data Write Setup Time Data Write Hold Time CS Write Setup Time CS Write Hold Time R/W Write Setup Time R/W Write Hold Time DATA BUS TIMING - READ Strobe STR Pulse Width Address Read Setup Time Address Read Hold Time Data Read Setup Time Data Read Hold Time CS Read Setup Time CS Read Hold Time R/W Read Setup Time R/W Read Hold Time (See Figure 5) (See Figure 4)
SYMBOL tSTR tAWS tAWH tDWS tDWH tCSWS tCSWH tRWWS tRWWH tSTR tARS tARH tDRS tDRH tCSRS tCSRH tRWRS tRWRH
MIN
50 0 30 30 30 50 30 0 30 80 0 30 --0 30 0 30
TYP
-------------60 -----
MAX
------------120 ------
UNITS
ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns
HOLT INTEGRATED CIRCUITS 32
HI-6110
TRANSMITTER BUSA/B Tx Data from Manchester Encoder BUSA/B TXINHA/B
1:2.5
55 W 35 W Point "AD"
Isolation Transformer
55 W
55 W Point "AD" 35 W 55 W
2.5:1
RECEIVER Rx Data to Manchester Decoder
Isolation Transformer
Figure 6. Direct Coupled Test Circuits
TRANSMITTER Tx Data from Manchester Encoder BUSA/B
1:2.5
Point "AT"
1:1.4
52.5 W (.75 Zo) 35 W (.5 Zo)
BUSA/B TXINHA/B 52.5 W (.75 Zo) 35 W (.5 Zo) 52.5 W (.75 Zo)
Isolation Transformer Point "AT"
Coupling Transformer
52.5 W (.75 Zo)
1.4:1
2.5:1
RECEIVER Rx Data to Manchester Decoder
Coupling Transformer
Isolation Transformer
Figure 7. Transformer Coupled Test Circuits
HEAT SINKING THE LEADLESS PLASTIC CHIP CARRIER PACKAGE
The HI-6110PCI/T/M is packaged in a 64 pin leadless plastic chip carrier (LPCC). This package has a metal heat sink pad on its bottom surface, which should be soldered to the printed circuit board for optimum thermal dissipation. The package heat sink is electrically isolated and may be soldered to any convenient power plane or ground plane. Redundant "vias" between the exposed board surface and buried power or ground plane will enhance thermal conductivity.
APPLICATIONS NOTE
Holt Applications Note AN-500 provides circuit design notes regarding the use of Holt MIL-STD-1553 data communications devices. Layout considerations, as well as recommended interface and protection components are included.
HOLT INTEGRATED CIRCUITS 33
HI-6110 THERMAL CHARACTERISTICS
Data taken at VDD = 3.3V, continuous data transmission at 1 Mbit/s, single transmitter enabled. PART NUMBER
HI-6110PQI / T
PACKAGE STYLE
52 pin PQFP
CONDITION
Mounted on circuit board Heat sink pad unsoldered
qJA
60.9 C / W 31.1 C / W 22.8 C / W
JUNCTION TEMPERATURE
TA= 25C TA= 85C TA= 125C 56C 41C 37C 116C 101C 97C 156C 141C 137C
HI-6110PCI / T
64 pin LPCC Heat sink pad soldered
PIN CONFIGURATION (Top View)
VDDLOGRTAP RTA4 RTA3 RTA2 RTA1 RTA0 RTMODE BCMODE RCVA TXINHA STR R/W CS D0 D1 D2 D3 D4 D5 D6 D7 D8 D9 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
64 63 62 61 60 59 58 57 56 55 54 53 52 51 50 49
HC-6110PCI HC-6110PCT
48 47 46 45 44 43 42 41 40 39 38 37 36 35 34 33
BUSA VDDA BUSA BUSB VDDB BUSB TXINHB RCVB FFEMPTY RF0 / RCVCMDA RF1 / RCVCMDB RFLAG VALMESS ERROR MR
64 Pin Leadless Plastic Chip Carrier (LPCC)
See page 1 for 52-pin PQFP Pin Configuration
HOLT INTEGRATED CIRCUITS 34
D10 D11 D12 D13 D14 D15 RA2 RA1 RA0 BCSTART RA3 CLK GND -
17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32
HI-6110
ORDERING INFORMATION
HI - 6110 xx x x
PART NUMBER LEAD FINISH
Blank F
PART NUMBER
Tin / Lead (Sn / Pb) Solder 100% Matte Tin (Pb-free, RoHS compliant)
TEMPERATURE RANGE FLOW BURN IN
I T M
PART NUMBER
-40C TO +85C -55C TO +125C -55C TO +125C
PACKAGE DESCRIPTION
I T M
NO NO YES
PC PQ
64 PIN PLASTIC 9 x 9 mm CHIP SCALE (not available with "M" flow) 52 PIN PLASTIC QUAD FLAT PACK (PQFP)
HOLT INTEGRATED CIRCUITS 35
HI-6110 HI-6110 PACKAGE DIMENSIONS
inches (millimeters)
64-PIN PLASTIC CHIP-SCALE PACKAGE
Heat Sink Plate on Bottom of Package
.354 .004 (9.00 .10)
.301 .006 (7.65 .15) .0197 (0.50)
.354 .004 (9.00 .10)
.301 .006 (7.65 .15)
.010 typ (0.25)
.016 .002 (0.40 .05) .008 typ (0.20) .035 .004 (0.90 .10)
52-PIN PLASTIC QUAD FLAT PACK (PQFP)
Package Type: 52PQS
.0256 BSC (0.65 BSC) .520 .010 (13.2 .25) SQ. .394 .004 SQ. (10.00 .10) .012 .003 (.30 .08)
.035 .006 (.88 .15) .063 .032 (1.6 .175) Typ.
.008 (0.20) Min. .009 .003R (.225 .075R) 0 0 7
See Detail A
.092 .004 (2.32 .12) .079 .002 (2.00 .05) .009 R typ (0.23 R typ)
DETAIL A
HOLT INTEGRATED CIRCUITS 36

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