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| DATA BULLETIN MX806A Features Half-Duplex Audio Processor Dynamic Control of Signal Levels Performs Signal Conditioning and Filtering requirements for both Transmit and Receive Audio Processor Three separate signal sections: Input process Main Process Mixing and Output Drives Low Power Operation Member of DBS800 Family (C-BUS Compatible) MAIN PROCESS OUT MOD OUT MOD IN CHIP SELECT POWER SUPPLY SERIAL CLOCK COMMAND DATA # PRIMARY AND SECONDARY AUDIO INPUTS Voice Sub-Audio Tone MSK,etc. C-BUS INTERFACE CALIBRATION INPUT VOGAD SENSE ATTENUATOR MODULATION 1 OUT # TX MIC IN MIC. AMP VOGAD AMP HIGHPASS FILTER # VOGAD SENSE # OR VOGAD SENSE # TRANSMITTER MODULATION DRIVES # GAIN SET # # # PRE-EMPHASIS LIMITING FILTERING GAIN SETTING # ATTENUATOR MODULATION 2 OUT INPUT PROCESS # RX AUDIO IN DE-EMPHASIS FILTER MAIN PROCESS MODULATION MIXER AMP OUTPUT DRIVES # XTAL/CLOCK XTAL CLOCK GENERATOR TO EXTERNAL EXTERNAL AUDIO AUDIO PROCESSES PROCESS IN BUFFER ATTENUATOR LOUDSPEAKER AUDIO The MX806A LMR audio processor is intended too primarily to operate as the "Audio Terminal" or radio systems using the DBS800 Digitally Integrated Baseband Subsystem. The MX806A half-duplex device has signal paths and level setting elements that are configured and adjusted by digital information sent from the radio microcontroller using C-BUS protocol. (C-BUS is the serial interface for all DBS 800 ICs.) The Signal Path is divided into three sections: Input Process, Main process, and Mixing and Output Drives. If selected, signal level stability and output accuracy of the MX806A is maintained by a voltage-controlled gain system using selectable signal-level detectors. Signal levels can be dynamically controlled to provide "dynamic compensation" for factors such as temperature drift, VCO non-linearity, etc. The MX806A audio stages can be completely disabled - or the whole IC can be placed into powersave mode, leaving only clock and C-BUS circuitry active. The MX806A may be used with a 5.0V power supply and is available in the following packages: 24-pin SOIC (MX806ADW), 24-pin PLCC (MX806ALH), and 24-pin PDIP (MX806AP). 1998 MX-COM, Inc. www.mxcom.com Tel: 800 638 5577 336 744 5050 Fax: 336 744 5054 Doc. # 20480064.006 4800 Bethania Station Road, Winston-Salem, NC 27105-1201 USA All trademarks and service marks are held by their respective companies. Audio Processor 2 MX806A Contents Section Page 1 Block Diagram................................................................................................................ 3 2 Signal List....................................................................................................................... 4 3 External Components.................................................................................................... 6 4 General Description....................................................................................................... 7 4.1 4.2 4.3 Signal Path .......................................................................................................................... 7 VOGAD................................................................................................................................ 7 4.2.1 4.3.1 4.3.2 VOGAD Components Calculations - Figure 2 and Figure 5..................................................... 8 TX Calibration: From Mic. In to Modulator Drives Out ............................................................. 8 RX Calibration: From RX Audio In to Audio Out ...................................................................... 8 Calibration Methods............................................................................................................. 8 5 Controlling Protocol .................................................................................................... 10 5.1.1 5.1.2 5.1.3 5.1.4 Control Command - (Preceded by A/C 10H).......................................................................... 11 Mode Command - (Preceded by A/C 11H) ............................................................................ 12 Modulator Levels - (Preceded by A/C 12H) ........................................................................... 13 Volume Set - (Preceded by A/C 13H) .................................................................................... 15 6 Application Notes ........................................................................................................ 16 7 Performance Specifications........................................................................................ 17 7.1 Electrical Specifications..................................................................................................... 17 7.1.1 7.1.2 7.1.3 7.1.4 Absolute Maximum Limits ....................................................................................................... 17 Operating Limits...................................................................................................................... 17 Operating Characteristics ....................................................................................................... 18 Timing ..................................................................................................................................... 21 7.2 Packages........................................................................................................................... 22 MXCOM, Inc. reserves the right to change specifications at any time without notice. 1998 MX-COM, Inc. www.mxcom.com Tel: 800 638 5577 336 744 5050 Fax: 336 744 5054 Doc. # 20480064.006 4800 Bethania Station Road, Winston-Salem, NC 27105-1201 USA All trademarks and service marks are held by their respective companies. Audio Processor 3 MX806A 1 Block Diagram CHIP SELECT POWER SUPPLY SERIAL CLOCK COMMAND DATA MAIN PROCESS OUT MOD OUT MOD IN # PRIMARY AND SECONDARY AUDIO INPUTS Voice Sub-Audio Tone MSK,etc. C-BUS INTERFACE CALIBRATION INPUT VOGAD SENSE ATTENUATOR MODULATION 1 OUT # TX MIC IN MIC. AMP VOGAD AMP HIGHPASS FILTER # VOGAD SENSE # OR VOGAD SENSE # TRANSMITTER MODULATION DRIVES # GAIN SET # # # PRE-EMPHASIS LIMITING FILTERING GAIN SETTING # ATTENUATOR MODULATION 2 OUT INPUT PROCESS # RX AUDIO IN DE-EMPHASIS FILTER MAIN PROCESS MODULATION MIXER AMP OUTPUT DRIVES # XTAL/CLOCK XTAL CLOCK GENERATOR TO EXTERNAL EXTERNAL AUDIO AUDIO PROCESSES PROCESS IN BUFFER ATTENUATOR LOUDSPEAKER AUDIO Figure 1: Block Diagram 1998 MX-COM, Inc. www.mxcom.com Tel: 800 638 5577 336 744 5050 Fax: 336 744 5054 Doc. # 20480064.006 4800 Bethania Station Road, Winston-Salem, NC 27105-1201 USA All trademarks and service marks are held by their respective companies. Audio Processor 4 MX806A 2 Signal List Pin 1 2 Signal Xtal Xtal/Clock Description The output of the 4.032MHz on-chip clock oscillator. External components are required at this output when a Xtal is used. See Figure 2. The input to the on-chip 4.032MHz clock oscillator inverter. A 4.032MHz Xtal or externally derived clock should be connected here. See Figure 2. This clock provides timing for on-chip elements, filters, etc. This is the `C-BUS' serial Clock input. This clock, produced by the microcontroller, is used for transfer timing of commands and data to and from the MX805A. See Section 6 and Section 7.1.4. This is the `C-BUS' serial data input from the microcontroller. Command Data is loaded to this device in 8-bit bytes, MSB (bit 7) first and LSB (bit 0) last, synchronized to the Serial Clock. The Command/Data instruction is acted upon at the end of loading the whole instruction. Command information is detailed in Table 3 through Table 7. See Section 6 and Section 7.1.4. Chip Select . This is the `C-BUS' data loading control function. This input is provided by the microcontroller. Command Data transfer sequences are initiated, completed or aborted by the CS signal. See Section 6 and Section 7.1.4. The error-voltage output of the selected VOGAD sensor. This output, with external attack and decay setting components, should be connected as in Figure 2 and Figure 3, to the VOGAD In pin. The audio input to the MX806A from the radio receiver's demodulator circuits. This input, which requires AC coupling with capacitor C12, is selected via a Control Command bit. The gain control signal from the selected VOGAD sensor (VOGAD Out) to the Input Process voltage-controlled amplifier. The required sensor is selected via a Mode Command. The choice of two sensors enables gain control from either the Input Process or an External Process. External attack and decay setting components should be applied as recommended. See Figure 2 and Figure 3. The output of the on-chip analog circuitry bias system, held internally at VDD/2. This pin should be decoupled to VSS by capacitor C10. See Figure 2. The non-inverting input to the microphone Op-Amp. This input requires external components for Op-Amp gain/attenuation setting as shown in Figure 2. The inverting input to the microphone Op-Amp. This input requires external components for Op-Amp gain/attenuation setting as shown in Figure 2. Negative Supply (GND) 3 Serial Clock 4 Command Data 5 CS 6 VOGAD OUT 7 RX Audio In 8 VOGAD In 9 10 11 12 13 VBIAS Mic In (+) Mic In (-) VSS Mic Out 14 The output of the Microphone Op-Amp, used with the Mic In (-) input to provide the required gain/attenuation using external components as shown in Figure 2. The external components shown are to assist in the use of this amplifier with wither inverting or non-inverting inputs. During Powersave (Volume Command this output is placed at VSS.) Processed Audio In The input to the device from such external audio processed as Voice Store and Retrieve or Frequency Domain Scrambling. This input, which requires AC Coupling with capacitor C13, is selected by a Mode Command bit. External Audio Process Calibration Input The buffered output of the Input Processing Stage. Its purpose is to further external audio processing stages prior to re-introduction at the Processed Audio In Pin. A unique audio input to be used for dynamic balancing of the modulator drives for measuring Deviation Limiter levels. A CUE (beep) input from the MX803 Audio Tone Processor can be entered on this line. This audio input must be externally biased. It is selected via a Mode Command bit. The output of the Main Process stage. This output should be mixed with any additional system audio inputs (Audio, Sub-Audio Signaling, MSK) in the on-chip Modulation Summing Amplifier. External components shown in Figure 2 should be used as required. www.mxcom.com Tel: 800 638 5577 336 744 5050 Fax: 336 744 5054 Doc. # 20480064.006 All trademarks and service marks are held by their respective companies. 15 16 17 Main Process Out 1998 MX-COM, Inc. 4800 Bethania Station Road, Winston-Salem, NC 27105-1201 USA Audio Processor 5 MX806A Pin 18 19 20 21 Signal Sum In Sum Out Modulation In Audio Output Description The input and output terminals of the on-chip Modulation Summing Amplifier. External components are required for input signals and gain/attenuation setting as shown in Figure 2. For single-signal, no gain requirements, Main Process Out may be linked directly to Modulation In. The final, composite modulating signal to VCO (Mod 1) and Reference (Mod 2) Output Drives The processed audio signal output intended as a received audio (volume) output. Though normally used in the RX mode, operation in TX is permitted. The output level of this attenuator is controlled via a Volume Set command. During Powersave this output is placed at VSS. The drive to the radio modulator Voltage Controlled Oscillator (VCO) from the composite audio summing stage. The drive to the radio modulator Reference Oscillator from the composite audio summing stage. Note: These VCO output attenuators are individually adjustable using the Modulator Level command. During Powersave these outputs are placed at VSS. Positive Supply. A single 5.0V regulated supply is required. Levels and voltages within this Audio Processor are dependent upon this supply. Table 1: Signal List 22 23 Modulation 1 Drive Modulation 2 Drive 24 VDD 1998 MX-COM, Inc. www.mxcom.com Tel: 800 638 5577 336 744 5050 Fax: 336 744 5054 Doc. # 20480064.006 4800 Bethania Station Road, Winston-Salem, NC 27105-1201 USA All trademarks and service marks are held by their respective companies. Audio Processor 6 MX806A 3 External Components VDD VDD R6 XTAL SEE INSET 1 XTAL/CLOCK SERIAL CLOCK COMMAND DATA CHIP SELECT VOGAD OUT C12 RX AUDIO IN VOGAD IN VBIAS MIC. IN (+) R5 C8 R12 C10 MIC. IN (-) VSS 1 2 3 4 5 6 7 8 9 10 11 12 MX806AJ 24 23 22 21 20 19 18 17 16 15 14 13 VDD MODULATION 2 DRIVE MODULATION 1 DRIVE AUDIO OUT MOD. IN MIX OUT MIX IN MAIN PROCESS OUT R8 R7 R10 R11 C14 C11 EXTERNAL SIGNAL AND DATA INPUTS C9 R9 CALIBRATION IN EXTERNAL AUDIO PROCESS PROCESSED AUDIO IN MIC. OUT SEE INSET 2 C13 R13 VSS INSET 1 XTAL 1 X1 XTAL/CLOCK C6 C7 INSET 2 C5 MX806AJ C4 VBIAS R4 10 MIC. IN (+) 2 C2 C1 R2 R1 + 13 MIC. OUT 11 MX806AJ R3 C3 MIC. IN (-) Figure 2: Recommended External Components Component R1 R2 R3 R4 R5 R6 R7 R8 R9 R10 R11 R12 R13 C1 Notes Value 10k 10k 20k 20k 10k 2.2M 100k 100k 100k 100k 100k 2.2M 470k .47F Tolerance 10% 10% 10% 10% 10% 10% 10% 10% 10% 10% 10% 10% 10% 20% Component C2 C3 C4 C5 C6 C7 C8 C9 C10 C11 C12 C13 C14 X1 Notes Value .47F 270pF 270pF 0.1F 33pF 5-65pF 1.0F 1.0F 1.0F 22pF 0.1F 0.01F 0.01F 4.00MHz Tolerance 20% 20% 20% 20% 20% 20% 20% 20% 20% 20% 20% 20% 20% Table 2: Recommended External Components 1998 MX-COM, Inc. www.mxcom.com Tel: 800 638 5577 336 744 5050 Fax: 336 744 5054 Doc. # 20480064.006 4800 Bethania Station Road, Winston-Salem, NC 27105-1201 USA All trademarks and service marks are held by their respective companies. Audio Processor 7 MX806A Recommended External Component Notes: 1. Input Op-Amp gain/attenuation components (voltage gain = 6.0dB) are shown in Inset 1 is a differential configuration to demonstrate the versatility of this input. Components for a single (+ or -) input may be used. 2. Resistor values R7 to R11 (summation components) are dependent upon application and configuration requirements. 3. Xtal circuit capacitors C6 (CD) and C7 (CG) shown in Inset 2 are recommended in accordance with MXCOM's Crystal Oscillator Application Note. Circuit drive and drain resistors are incorporated on-chip. Operation of any MX-COM IC without a Xtal clock input may cause device damage. To minimize damage in the event of a Xtal/drive failure, you should install a current limiting device (resistor or fast-reaction fuse) on the power-input (VDD). 4 General Description The MX806A LMR audio processor is intended too primarily to operate as the "Audio Terminal" or radio systems using the DBS800 Digitally Integrated Baseband Subsystem. The MX806A half-duplex device has signal paths and level setting elements that are configured and adjusted by digital information sent from the radio microcontroller using C-BUS protocol. (C-BUS is the serial interface for all DBS 800 ICs.) 4.1 Signal Path The Signal path is divided into three sections: Input Process: This stage has selectable TX/RX paths. Transmits voice signals pass through microphone pre-amplifier, voltage controlled gain (VOGAD) and highpass filter stages. Received audio is de-emphasized. This initial audio, after line-in gain adjustment, may be switched to external audio processes (such as scrambling) or to the internal Main Process stages. Main Process: Conditioning for the input or external process signals is completed in this stage. It is comprised of pre-emphasis, high and lowpass switched capacitor filters and a deviation limiter. Mixing and Output Drives: Main audio for transmission is mix with signaling and data from external sources (other DBS 800 ICs) to provide the composite signal for the digitally adjustable transmitter modulation drives. Received audio level is adjusted for output to loudspeaker circuitry. If selected, signal level stability and output accuracy of the MX806A is maintained by a voltage-controlled gain system using selectable signal-level detectors. Signal levels can be dynamically controlled to provide "dynamic compensation" for factors such as temperature drift, VCO non-linearity, etc. The MX806A audio stages can be completely disabled - or the whole IC can be placed into powersave mode, leaving only clock and C-BUS circuitry active. 4.2 VOGAD The overall Gain Control system of the MX806A consists of 2 selectable signal peak detectors whose output is fed via external integrating components to adjust the gain of the Voltage Controlled Amplifier positioned in the TX Input Process Path. The transmit input signals is presented to Peak Detector 1 or 2. The Peak Detectors are enabled individually by a Mode Command. When the input signal exceeds the peak - to - peak threshold of the detector, a 5-volt level is produced at the VOGAD Out pin. This level remains for as long as the signal exceeds the threshold. The integrated level to the VOGAD In pin causes the Voltage Controlled Amplifier gain to be reduced. As can be seen from Figure 3 and Figure 5, Peak Detector 1 allows control of the audio level to the external audio process and Peak Detector 2 allows control of transmit deviation levels. 1998 MX-COM, Inc. www.mxcom.com Tel: 800 638 5577 336 744 5050 Fax: 336 744 5054 Doc. # 20480064.006 4800 Bethania Station Road, Winston-Salem, NC 27105-1201 USA All trademarks and service marks are held by their respective companies. Audio Processor EXTERNAL INTEGRATION COMPONENTS R5 VOGAD IN C8 8 R6 R12 MX806A VDD VSS VOGAD OUT HI PEAK DETECTOR MIC. OUT MIC. IN MIC. IN TX DRIVES - + VOGAD (Voltage Controlled) AMPLIFIER TX HI - LO PEAK DETECTOR MAIN PROCESS CAL INPUT TX INPUT PROCESS To EXTERNAL AUDIO PROCESSES a RX DRIVE PROCESSED AUDIO IN Figure 3: VOGAD Sensors and Timing Components (from Figure 5) VOGAD attack and decay times are set using the external components shown in Figure 2 and Figure 3. They are calculated as described below. 4.2.1 VOGAD Components Calculations - Figure 2 and Figure 5 Provided R5 1.0k and R6 R12 R5 Then Attack Time (TA ) R5 x C8 Decay Time (TD ) R6 x C8 2 4.3 4.3.1 Calibration Methods TX Calibration: From Mic. In to Modulator Drives Out To effectively null all internal IC tolerance, the following initial calibration routine is suggested. Disable Peak Detectors (Mode Command) Set Transmitter Drives to 0dB (Mod. Levels Set) Pre-emphasis may be employed as required (Control Command) Set Input Level Amp to 0dB Control Command) 1. Mic. In = 250mVRMS at 1kHz. Set Process Gain Amp for output of 1440mVP-P (100% deviation). 2. With Process Gain Amp set as 1 and with Mic. In = 25mVRMS at 1kHz, set the Input Level Amp for an output level of 308mVRMS (60% deviation) 4.3.2 RX Calibration: From RX Audio In to Audio Out Set Audio Output Drive In to Audio Out Leave Process Gain Amp set as 1 (See Section 4.3.1) 3. With and RX Audio In level of between 154mVRMS and 308mVRMS (See Section 7) at 1kHz, set the Input Level Amp for and output level of 308mVRMS. 1998 MX-COM, Inc. www.mxcom.com Tel: 800 638 5577 336 744 5050 Fax: 336 744 5054 Doc. # 20480064.006 4800 Bethania Station Road, Winston-Salem, NC 27105-1201 USA All trademarks and service marks are held by their respective companies. Audio Processor 1998 MX-COM, Inc. Transmitter RADIO AND CLUSTER MICROCONTROLLER PROM EXTERNAL DATA MODL REF. VCO "C-BUS" SERIAL DATA SYSTEM DRAM MX802 AUDIO 4800 Bethania Station Road, Winston-Salem, NC 27105-1201 USA MX803A MX805A MX809 9 MX806A RECEIVE AND TRANSMIT AUDIO PROCESSOR DATA/VOICE STORE AND RETRIEVE CODEC AUDIO SIGNALING PROCESSOR SUB-AUDIO SIGNALING PROCESSOR MSK MODEM 4.032MHz XTAL XTAL XTAL XTAL TX TONE AUDIO SIGNALS AND CUE 1200 BAUD MSK SIGNALS TX SUB-AUDIO SIGNALS RX (AUDIO, MSK, TONE, SUB-AUDIO) SIGNALS Figure 4: MX806A Interfaced with Other DBS 800 Elements www.mxcom.com Tel: 800 638 5577 336 744 5050 Fax: 336 744 5054 Receiver DEMOD Doc. # 20480064.006 All trademarks and service marks are held by their respective companies. Figure 4 - MX806A Interfaced with Other DBS800 Elements MX806A Audio Processor 10 MX806A (R) Figure 5: LMR Audio Processor Explanatory Block Diagram 5 Controlling Protocol Control of the functions and levels within the MX806A LMR Audio processor is by a group of Address/Commands and appended data instructions from the system microcontroller. The use of these instructions is detailed in the following paragraphs and tables. Command Assignment HEX General Reset Control Command Mode Command Mod. Levels Set Volume Set 01 10 11 12 13 Address/Command Binary MSB LSB (R) Table 3: C-BUS Address/Commands In "C-BUS" protocol the MX806A is allocated Address/Command values 10H and 13H. C-BUS Command Mode, Modulation and Volume assignments, and data requirements are given in Table 3 and illustrated in Figure 5. Commands and Data are only to be loaded in the group configurations detailed since the "C-BUS" interface recognizes the first byte after Chip Select (logic "0") as an Address/Command. Function or Level control data, which is detailed in Table 4, Table 5, Table 6, and Table 7, is acted upon at the end of the loaded instruction 1998 MX-COM, Inc. www.mxcom.com Tel: 800 638 5577 336 744 5050 Fax: 336 744 5054 4800 Bethania Station Road, Winston-Salem, NC 27105-1201 USA (R) Command Data Table 00000001 00010000 00010001 00010010 00010011 + + + + 1 byte 1 byte 2 bytes 1 byte 2 3 4 5 Doc. # 20480064.006 All trademarks and service marks are held by their respective companies. Audio Processor 11 MX806A Upon power-up the value of the "bits" in this device will be random (either "0" or "1"). A General Reset Command (01H) is required. This command is provided to "reset" all devices on the Command "Data line and has the following effect on the MX806A: Control Address Command Mode Address Command Volume Set 5.1.1 Control Command - (Preceded by A/C 10H) Settings MSB Loaded as 00H Loaded as 00H Loaded as 00H Control Bits Audio Output (RX) Disabled Enabled Modulation Drives Disabled Enabled Pre-Emphasis Bypass Enabled Input Select RX In Mic. In 7 0 1 6 0 1 5 0 1 4 0 1 3 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1 2 0 0 0 0 1 1 1 1 0 0 0 0 1 1 1 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 Input Level Set Input Amp Disabled -4.0dB -3.0dB -2.0dB -1.0dB 0dB 1.0dB 2.0dB 3.0dB 4.0dB 5.0dB 6.0dB 7.0dB 8.0dB 9.0dB 10.0dB Table 4: Control Commands 1998 MX-COM, Inc. www.mxcom.com Tel: 800 638 5577 336 744 5050 Fax: 336 744 5054 Doc. # 20480064.006 4800 Bethania Station Road, Winston-Salem, NC 27105-1201 USA All trademarks and service marks are held by their respective companies. Audio Processor 12 MX806A 5.1.2 Mode Command - (Preceded by A/C 11H) Setting MSB Mode Bits Drive Source Signals Calibration Deviation Limiter Disabled Enabled VOGAD Disabled Enabled De-Emphasis Enabled Bypassed Signal Select Internal External 0 0 1 0 1 0 1 0 1 Process Gain Set -4.0dB -3.0dB -2.0dB -1.0dB 0dB 1.0dB 2.0dB 3.0dB 7 0 1 6 0 1 5 0 1 4 0 1 3 0 1 2 0 0 0 0 1 1 1 1 1 0 0 1 1 0 0 1 1 Table 5: Mode Commands 1998 MX-COM, Inc. www.mxcom.com Tel: 800 638 5577 336 744 5050 Fax: 336 744 5054 Doc. # 20480064.006 4800 Bethania Station Road, Winston-Salem, NC 27105-1201 USA All trademarks and service marks are held by their respective companies. Audio Processor 13 MX806A 5.1.3 Modulator Levels - (Preceded by A/C 12H) Setting Byte 1 MSB Modulator Drives First byte for transmission 5 0 1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 Must be "0" VCO Drive Attenuation 12.4dB 12.0dB 11.6dB 11.2dB 10.8dB 10.4dB 10.0dB 9.6dB 9.2dB 8.8dB 8.4dB 8.0dB 7.6dB 7.2dB 6.8dB 6.4dB 6.0dB 5.6dB 5.2dB 4.8dB 4.4dB 4.0dB 3.6dB 3.2dB 2.8dB 2.4dB 2.0dB 1.6dB 1.2dB 0.8dB 0.4dB 0dB 7 0 4 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 3 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1 6 0 2 0 0 0 0 1 1 1 1 0 0 0 0 1 1 1 1 0 0 0 0 1 1 1 1 0 0 0 0 1 1 1 1 1998 MX-COM, Inc. www.mxcom.com Tel: 800 638 5577 336 744 5050 Fax: 336 744 5054 Doc. # 20480064.006 4800 Bethania Station Road, Winston-Salem, NC 27105-1201 USA All trademarks and service marks are held by their respective companies. Audio Processor 14 MX806A Setting Byte 0 MSB Modulator Drives Last byte for transmission 5 0 1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 Must be "0" VCO Drive Attenuation 6.2dB 6.0dB 5.8dB 5.6dB 5.4dB 5.2dB 5.0dB 4.8dB 4.6dB 4.4dB 4.2dB 4.0dB 3.8dB 3.6dB 3.4dB 3.2dB 3.0dB 2.8dB 2.6dB 2.4dB 2.2dB 2.0dB 1.8dB 1.6dB 1.4dB 1.2dB 1.0dB 0.8dB 0.6dB 0.4dB 0.2dB 0dB 7 0 4 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 3 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1 6 0 2 0 0 0 0 1 1 1 1 0 0 0 0 1 1 1 1 0 0 0 0 1 1 1 1 0 0 0 0 1 1 1 1 Table 6: Modulator Drive Levels 1998 MX-COM, Inc. www.mxcom.com Tel: 800 638 5577 336 744 5050 Fax: 336 744 5054 Doc. # 20480064.006 4800 Bethania Station Road, Winston-Salem, NC 27105-1201 USA All trademarks and service marks are held by their respective companies. Audio Processor 15 MX806A 5.1.4 Volume Set - (Preceded by A/C 13H) Setting MSB Volume Set 5 0 1 Main Process Out Enabled Biased Powersave Chip Enabled Powersaved 1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 VCO Drive Attenuation OFF 48.0dB 46.4dB 44.8dB 43.2dB 41.6dB 40.0dB 38.4dB 36.8dB 35.2dB 33.6dB 32.0dB 30.4dB 28.8dB 27.2dB 25.6dB 24.0dB 22.4dB 20.8dB 19.2dB 17.6dB 16.0dB 14.4dB 12.8dB 11.2dB 9.6dB 8.0dB 6.4dB 4.8dB 3.2dB 1.6dB 0dB 7 0 0 5 0 1 4 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 3 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1 2 0 0 0 0 1 1 1 1 0 0 0 0 1 1 1 1 0 0 0 0 1 1 1 1 0 0 0 0 1 1 1 1 Table 7: Volume Set Notes: 1. Command Loading: Address/Commands and data bytes must be loaded in accordance with the information given in Figure 7. 2. The powersave function is enabled by bit 5 of the Volume Set Command (Table 7). During Powersave all internal elements except the clock Generator and "C-BUS" interface are off. The Mic Op-Amp and output Drive stage outputs are connected to VSS. 3. Modulator Drives are controlled separately, but the whole two-byte modulator Drive command must be loaded for each requirement adjustment. 4. Chip Select must be held at a logic "1" for the period "tCSOFF" between transactions. 1998 MX-COM, Inc. www.mxcom.com Tel: 800 638 5577 336 744 5050 Fax: 336 744 5054 Doc. # 20480064.006 4800 Bethania Station Road, Winston-Salem, NC 27105-1201 USA All trademarks and service marks are held by their respective companies. Audio Processor 16 MX806A 6 Application Notes To assist in rapid setting, this quick-reference list should be used with Figure 5. Control 7 6 5 4 3-0 Mode 7 6 5 4 3 2-0 Modulator Levels Byte 1 7-5 4-0 Byte 2 7-5 4-0 Volume Set 7-6 5 4-0 "0" Powersave Volume Set Attenuation (0 to 48dB) Table 8: Quick Reference List "0" Mod 2 Attenuation (0 to 6.2dB) A/C = 13H "0" Mod 1 Attenuation (0 to 12.4dB) Drive Source Derivation Limiter Enable VOGAD Enable De-emphasis Enable Signal Select Process Gain Set A/C = 12H A/C = 10H Audio Out (RX) Enable Modulator Drive Enable Pre-Emphasis Select Input Select (RX/TX) Input Level Set (-4dB to 10dB) A/C = 11H Sets the Control, Mode and Volume Commands to 00H MSB GENERAL RESET LSB 7 MSB LSB 6 5 4 3 2 1 0 TABLE 2 CONTROL COMMAND 1 DATA BYTE 7 MSB LSB 6 5 4 3 2 1 0 TABLE 3 MODE COMMAND 1 DATA BYTE 7 MSB LSB 6 5 4 3 2 1 0 TABLE 5 VOLUME SET 1 DATA BYTE 7 MSB LSB 6 5 4 3 2 1 0 7 6 5 4 3 2 1 0 TABLE 4 MODULATOR LEVELS SET 2 DATA BYTES - BYTE 1 (loaded first) BYTE 0 (loaded last) Figure 6: Examples of Command Data Configurations 1998 MX-COM, Inc. www.mxcom.com Tel: 800 638 5577 336 744 5050 Fax: 336 744 5054 Doc. # 20480064.006 4800 Bethania Station Road, Winston-Salem, NC 27105-1201 USA All trademarks and service marks are held by their respective companies. Audio Processor 17 MX806A 7 Performance Specifications 7.1 7.1.1 Electrical Specifications Absolute Maximum Limits Exceeding these maximum ratings can result in damage to the device. General Supply (VDD-VSS) Voltage on any pin to VSS Current VDD VSS Any other pin P / DW / LH Packages Total allowable Power dissipation at TAMB = 25C Derating above 25C Operating Temperature Storage Temperature -40 -55 Notes Min. -0.3 -0.3 -30 -30 -20 Typ. Max. 7.0 VDD + 0.3 30 30 20 800 10 85 125 Units V V mA mA mA mW mW/C above 25C C C Table 9: Absolute Maximum Ratings 7.1.2 Operating Limits Correct Operation of the device outside these limits is not implied. Notes Supply (VDD-VSS) Operating Temperature Xtal Frequency Min. 4.5 -40 Typ. 5.0 4.0 Table 10: Operating Limits Max. 5.5 85 Units V C MHz 1998 MX-COM, Inc. www.mxcom.com Tel: 800 638 5577 336 744 5050 Fax: 336 744 5054 Doc. # 20480064.006 4800 Bethania Station Road, Winston-Salem, NC 27105-1201 USA All trademarks and service marks are held by their respective companies. Audio Processor 18 MX806A 7.1.3 Operating Characteristics For the following conditions unless otherwise specified. VDD = 5.0V @ TAMB = 25C Xtal/Clock Frequency = 4.0MHz, Audio Level 0dB ref. = 308mVRMS @ 1kHz (60% deviation, FM) Notes Static Values Supply Current All Elements Enabled Maximum Powersave "C-BUS" Interface Input Logic "1" Input Logic "0" Input Current Input Capacitance Overall Performance Microphone Input Level Discriminator Input Level Output Drive Level 60% Deviation 100% Deviation Passband Passband Ripple Stopband Attenuation @ 150Hz @ 3400Hz @ 6000Hz @ 8000Hz to 20,000Hz Signal Path Noise TX TX RX RX Total Harmonic Distortion RX or TX, 60% Deviation Circuit Elements - Figure 5 Mic. Amp or Mod. Summation Amp Open Loop Gain Bandwidth Input Impedance Output Impedance Open Loop Closed Loop De-emphasis Slope Gain Input Impedance Min. Typ. Max. Units 8.0 0.7 3.5 -1.0 15.0 1.5 mA mA V V A pF mVRMS mVRMS mVRMS MVP-P Hz dB dB dB dB dB dBp dB dB dB % 1.5 1.0 7.5 1, 2 2, 3 2, 4 2, 4, 5 6 7 6, 8 25 154 291 297 -2 10 30 12 2 36 60 -50 -45 -60 -55 1.0 308 1440 308 326 3000 0.5 9 9 50.0 20.0 10.0 6.0 600 -6.0 0 1 dB kHz M k dB/octave dB M 1998 MX-COM, Inc. www.mxcom.com Tel: 800 638 5577 336 744 5050 Fax: 336 744 5054 Doc. # 20480064.006 4800 Bethania Station Road, Winston-Salem, NC 27105-1201 USA All trademarks and service marks are held by their respective companies. Audio Processor 19 MX806A Notes Voltage Controlled Gain Amp (VOGAD) Gain Non-Compression Full-Compression Input Impedance VOGAD Peak Detectors Output Impedance Logic "1" (Compress) Logic "0" Hi/Lo Peak Detector Threshold Hi Peak Detector Threshold Input (Low + Highpass) Filter Gain @ 1.0kHz Input Level Amp Gain Range Overall Tolerance Step Size External Audio Buffer Gain Pre-emphasis (Main Process and VOGAD) Slope Gain @ 1.0kHz Process Highpass Filter Gain @ 1.0kHz Deviation Limiter Threshold Gain Process Lowpass Filter Gain @ 1.0kHz Process Gain Amp Gain Range Overall Tolerance Step Size Output Impedance Transmitter Modulator Drives Input Impedance Mod. 1 Attenuator Attenuation Range Overall Tolerance Step Size Output Impedance Mod. 2 Attenuator Attenuation Range Overall Tolerance Step Size Output Impedance 1998 MX-COM, Inc. Min. Typ. Max. Units 2 10.0 6.0 -24 dB dB M 1 10 10 10 -1.0 0 -1.0 0.75 -0.1 1.0 0 6.0 10.0 -0.1 708 -0.5 -0.1 -4.0 -0.5 0.75 0 1300 0.1 1413 0.5 0.1 3.0 0.5 1.25 1.0 1.25 0.1 1300 650 1.0 k M mVP-P mV + ve pk dB dB dB dB dB dB/octave dB dB mVRMS dB dB dB dB dB k 12.4 1 0.6 dB dB dB 6.2 0.5 0.3 dB dB dB Doc. # 20480064.006 0 1.0 600 15.0 0 -1 0.2 0.4 600 0 -0.5 0.1 0.2 600 www.mxcom.com Tel: 800 638 5577 336 744 5050 Fax: 336 744 5054 4800 Bethania Station Road, Winston-Salem, NC 27105-1201 USA All trademarks and service marks are held by their respective companies. Audio Processor 20 MX806A Notes Audio Output Attenuator Attenuation Range Overall Tolerance Step Size Output Impedance Miscellaneous Impedances Processed Audio Input Calibration Input External Process Out RX with De-emphasis Bypass Min. 0 -1.0 1.1 Typ. Max. 48.0 1.0 2.1 Units dB dB dB k k k 1.6 600 500 500 100 25.0 Table 11: Operating Characteristics Operating Characteristics Notes: 1. Producing an output of 0dB with the Mic. Op-Amp set to 6dB (as shown in Figure 2) and the Modulator Drives set to 0dB. 2. With Output Drives set to 0dB and the system calibrated as described in the Application Notes. 3. Input level range for 0dB output, by adjustment of the Input Level Amp. 4. It is recommended that these output levels will produce 60% or 100% deviation in the transmitter. 5. With the microphone input level 20dB above the level required to produce 0dB at the Output Drives. 6. Between Microphone or RX inputs to Modulator or Audio Outputs. 7. Deviation from the ideal overall response including the pre- or de-emphasis slope. 8. Excluding the effect of pre- or de-emphasis slope. 9. In a 30kHz bandwidth. 10. Using pre-emphasis in the TX path. 1998 MX-COM, Inc. www.mxcom.com Tel: 800 638 5577 336 744 5050 Fax: 336 744 5054 Doc. # 20480064.006 4800 Bethania Station Road, Winston-Salem, NC 27105-1201 USA All trademarks and service marks are held by their respective companies. Audio Processor 21 MX806A 7.1.4 Timing Timing Parameters for two-way communications between the C and the MX805A on the C-BUS are shown in Table 12. C-BUS Timing tCSE Chip Select Low to First Serial Clock Rising Edge tCHS tCSOFF tNXT tCK Last Serial Clock Rising Edge to Chip Select High Chip Select High time between transactions Inter-Byte Time Serial Clock Period Table 12: Timing Information Notes: 1. Command Data is transmitted to the peripheral MSB (bit 7) first, LSB (bit 0) last. Reply Data is read from the MX805A MXB (bit 7) first, LSB (bit 0) last. 2. Data is clocked into the MX805A and into the microcontroller on the rising Serial Clock edge. 3. Loaded data instructions are acted upon at the end of each individual, loaded byte. 4. To allow for differing microcontroller serial interface formats, the MX806A will work with either polarity Serial Clock pulses. t CSOFF Min. 2.0 4.0 2.0 4.0 2.0 Typ. Max. Units s s s s s CHIP SELECT t CSE SERIAL CLOCK t NXT t NXT t CSH t CK COMMAND DATA 7 MSB ADDRESS/COMMAND BYTE 6 5 4 3 2 1 0 LSB FIRST DATA BYTE LAST DATA BYTE 7 6 5 4 3 2 1 0 7 6 5 4 3 2 1 0 Logic level is not important Figure 7: C-BUS Timing Information 1998 MX-COM, Inc. www.mxcom.com Tel: 800 638 5577 336 744 5050 Fax: 336 744 5054 Doc. # 20480064.006 4800 Bethania Station Road, Winston-Salem, NC 27105-1201 USA All trademarks and service marks are held by their respective companies. Audio Processor 22 MX806A 7.2 Packages A Package Tolerances DIM. A B C E E1 H J J1 K L P T Y MIN. TYP. MAX. 1.270 (32.26) 1.200 (30.48) 0.555 (14.04) 0.500 (12.70) 0.151 (3.84) 0.220 (5.59) 0.600 (15.24) 0.670 (17.02) 0.590 (14.99) 0.625 (15.88) 0.015 (0.38) 0.045 (1.14) 0.015 (0.38) 0.023 (0.58) 0.040 (1.02) 0.065 (1.65) 0.066 (1.67) 0.074 (1.88) 0.121 (3.07) 0.160 (4.05) 0.100 (2.54) 0.008 (0.20) 0.015 (0.38) 7 NOTE : All dimensions in inches (mm.) Angles are in degrees B E1 Y E PIN1 T K H L J J1 P C Figure 8: 24-pin PDIP Mechanical Outline: Order as part no. MX806AP Package Tolerances A Z B E W L T X Y CK H J P DIM. A B C E H J K L P T W X Y Z MIN. 0.597 (15.16) 0.286 (7.26) 0.093 (2.36) 0.390 (9.90) 0.003 (0.08) 0.013 (0.33) 0.036 (0.91) TYP. MAX. 0.613 (15.57) 0.299 (7.59) 0.105 (2.67) 0.419 (10.64) 0.020 (0.51) 0.020 (0.51) 0.046 (1.17) Alternative Pin Location Marking PIN 1 0.050 (1.27) 0.016 (0.41) 0.050 (1.27) 0.009 (0.23) 45 0 5 5 10 7 0.0125 (0.32) NOTE : All dimensions in inches (mm.) Angles are in degrees Figure 9: 24-pin SOIC Mechanical Outline: Order as part no. MX806ADW 1998 MX-COM, Inc. www.mxcom.com Tel: 800 638 5577 336 744 5050 Fax: 336 744 5054 Doc. # 20480064.006 4800 Bethania Station Road, Winston-Salem, NC 27105-1201 USA All trademarks and service marks are held by their respective companies. Audio Processor 23 MX806A E B Y DA W C K J W T H Package Tolerances DIM. A B C D E F G H J K P T W Y MIN. TYP. MAX. 0.380 (9.61) 0.409 (10.40) 0.380 (9.61) 0.409 (10.40) 0.128 (3.25) 0.146 (3.70) 0.435 (11.05) 0.417 (10.60) 0.417 (10.60) 0.435 (11.05) 0.250 (6.35) 0.250 (6.35) 0.023 (0.58) 0.018 (0.45) 0.022 (0.55) 0.047 (1.19) 0.048 (1.22) 0.049 (1.24) 0.051 (1.30) 0.006 (0.152) 0.009 (0.22) 45 30 6 PIN 1 P G F NOTE : All dimensions in inches (mm.) Angles are in degrees Figure 10: 24-pin PLCC Mechanical Outline: Order as part no. MX806ALH 1998 MX-COM, Inc. www.mxcom.com Tel: 800 638 5577 336 744 5050 Fax: 336 744 5054 Doc. # 20480064.006 4800 Bethania Station Road, Winston-Salem, NC 27105-1201 USA All trademarks and service marks are held by their respective companies. CML Microcircuits COMMUNICATION SEMICONDUCTORS CML Product Data In the process of creating a more global image, the three standard product semiconductor companies of CML Microsystems Plc (Consumer Microcircuits Limited (UK), MX-COM, Inc (USA) and CML Microcircuits (Singapore) Pte Ltd) have undergone name changes and, whilst maintaining their separate new names (CML Microcircuits (UK) Ltd, CML Microcircuits (USA) Inc and CML Microcircuits (Singapore) Pte Ltd), now operate under the single title CML Microcircuits. These companies are all 100% owned operating companies of the CML Microsystems Plc Group and these changes are purely changes of name and do not change any underlying legal entities and hence will have no effect on any agreements or contacts currently in force. CML Microcircuits Product Prefix Codes Until the latter part of 1996, the differentiator between products manufactured and sold from MXCOM, Inc. and Consumer Microcircuits Limited were denoted by the prefixes MX and FX respectively. These products use the same silicon etc. and today still carry the same prefixes. In the latter part of 1996, both companies adopted the common prefix: CMX. This notification is relevant product information to which it is attached. CML Microcircuits (USA) [formerly MX-COM, Inc.] Product Textual Marking On CML Microcircuits (USA) products, the `MX-COM' textual logo is being replaced by a `CML' textual logo. Company contact information is as below: CML Microcircuits (UK)Ltd COMMUNICATION SEMICONDUCTORS CML Microcircuits (USA) Inc. COMMUNICATION SEMICONDUCTORS CML Microcircuits (Singapore)PteLtd COMMUNICATION SEMICONDUCTORS Oval Park, Langford, Maldon, Essex, CM9 6WG, England Tel: +44 (0)1621 875500 Fax: +44 (0)1621 875600 uk.sales@cmlmicro.com www.cmlmicro.com 4800 Bethania Station Road, Winston-Salem, NC 27105, USA Tel: +1 336 744 5050, 0800 638 5577 Fax: +1 336 744 5054 us.sales@cmlmicro.com www.cmlmicro.com No 2 Kallang Pudding Road, 09-05/ 06 Mactech Industrial Building, Singapore 349307 Tel: +65 7450426 Fax: +65 7452917 sg.sales@cmlmicro.com www.cmlmicro.com D/CML (D)/2 May 2002 |
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