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PS/2 Mouse Controller with Auto-Ref
EC3592R
FEATURES
4 wires PS/II interface built-in. CMOS technology for lower power consumption. Fully compatible with IBM PS/II series PC. Supports four working modes: Reset, Stream, Remote and Wrap. 16 commands plus acknowledgment code. 7 different sample rates from 10/sec to 200/sec. 4 different resolutions: 1, 2, 4 and 8 count/mm. Scaling can be set to 2:1 as specified by IBM spec. Reduced external component counts by chip integration. RC oscillation. Built-in X/Y independent Auto-Ref function (E-CMOS Patented)X/Y threshold voltage level track with input signal dynamically and independently. High standard ESD and EFT immunity.
GENERAL DESCRIPTION
EC3592R is a single chip PS/II Mouse Controller, designed and fabricated in CMOS Technology. The EC3592R is available in 14-pin or 16-pin P-DIP package.
BLOCK DIAGRAM
BL BM BR PX1 PX2 AUTO X MOVEMENT REF PROCESS BUTTON PROCESS SELECTION TEST
PY1 PY2
AUTO Y MOVEMENT REF PROCESS
COMMAND PROCESS
ERROR PROCESS
X/Y RESOLUTION
X/Y SCALE
INFORMATION PROCESS
CLOCK DATA
OSCR OSCOUT OSCILLATOR
TIMING GENERATOR
X/Y SAMPLING
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PS/2 Mouse Controller with Auto-Ref
PIN CONFIGURATIONS
EC3592R
NC NC NC OSCR OSCOUT CLOCK DATA VSS
1 2 3 4 5 6 7 8
16 15 14
VDD PY2 PY1 PX2
VDD NC OSCOUT CLOCK
1 2 3
14 13 12
OSCR PY2 PY1 PX2 PX1 BL BM
EC3592RS
13 12 11 10 9
PX1 BL BM BR
4 EC3592RE 11 5 6 7 10 9 8
DATA VSS BR
PIN DESCRIPTIONS
PIN NAME OSCR OSCOUT CLOCK I/O I O I/O FUNCTION Crystal or RC oscillation input. Crystal or RC oscillation output. Bi-directional signal line between EC3592R and PC system. Whenever the mouse is ready to send data to the system or the system wants to send command to the mouse, it will clock in 11 bits of CLOCK on this line. DATA I/O Bi-directional signal line to transfer data. This is an open-drain output with internal pull-up resistor. All mouse data and system commands are transmitted through this line. VSS P Ground pin.
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PS/2 Mouse Controller with Auto-Ref
EC3592R
PIN NAME BR
I/O I
FUNCTION Right button selection. Built-in pull-down resistor of 50K BR pin is HIGH when right button is pressed and becomes LOW when it is released. EC3592R has edge-triggered button operation. It will only report through DATA line on a rising edge or falling edge of the input signal.
BM
I
Middle button selection. Built-in pull-down resistor of 50K. It is also edge-triggered button operation as "BR". Left button selection. Built-in pull-down resistor of 50K. It is also edge-triggered button operation as "BR". Input from the first X-axis photo-encoder. Input from the second X-axis photo- encoder. PX1 and PX2 constitute positive (negative) counts for rightward (leftward) movement on the screen. Input from the first Y-axis photo-encoder. Input from the second Y-axis photo-encoder. PY1 and PY2 constitute positive (negative) counts for downward (upward) movement on the screen.
BL
I
PX1 PX2
I I
PY1 PY2
I I
VDD
P
+5V power supply.
ABSOLUTE MAXIMUM RATINGS
PARAMETER Supply Voltage Ambient Temperature Storage Temperature Power Dissipation (Temp. = 70 ) SYMBOL Vdd Tamb Tstg Pd MIN. 0 0 -40 MAX. 6.5 70 125 100 UNIT V mW
Note: This is a stress rating only and functional operation of the device at these or at any other conditions above those indicated in the operational sections of this specification is not implied. Exposure to absolute .
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PS/2 Mouse Controller with Auto-Ref
maximum rating may affect device reliability.
EC3592R
DC ELECTRICAL CHARACTERISTICS
(NOTE: VDD =5V, UNLESS OTHERWISE SPECIFIED) PARAMETER Operating Voltage Operating current (No load) PX1/PX2/PY1/PY2 Input range PX1/PX2/PY1/PY2 Input amplitude PX1/PX2/PY1/PY2 Internal Resistor BL/BM/BR Input High Voltage BL/BM/BR Input Low Voltage BL/BM/BR Internal Pull-down Resistor CLOCK/DATA Output Current (Vol. =0.5V) CLOCK/DATA Internal Pull-up Resistor PX1/PX2/PY1/PY2/BL/BM/BR Input Leakage Current (Vih = 5V) Iih 2 uA Rcd 5 K SYMBOL Vdd Iop Vir Via Rpxy Vih Vil Rbut Iol 8 50 3.2 1.3 0.1 0.6 12 MIN. 4.5 TYP. 5 1.0 MAX. 5.5 2.5 3.2 UNIT V mA V V K V V K mA
AC ELECTRICAL CHARACTERISTICS
PARAMETER Oscillator Frequency R=270 K BL/BM/BR Button Debounce Time SYMBOL Foscr Tbd MIN. 62 TYP. 75 43 MAX. 90 UNIT KHz ms
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PS/2 Mouse Controller with Auto-Ref
TIMING DIAGRAM
Mouse sends data out:
1st CLOCK T3 T4 DATA T1 Start Bit Mouse receive data: 1st CLOCK T5 T6 DATA Start Bit Bit 0 T7 Parity Bit IBM SPEC T1 Time from DATA transition to the falling edge of CLOCK. T2 Time from the rising edge of CLOCK to DATA transition. T3 T4 T5 T6 Duration of CLOCK Low. Duration of CLOCK High. Duration of CLOCK Low. Duration of CLOCK High. 30~50 30~50 30~50 30~50 5~25 5~25 5~(T4-5) Stop Bit T8 2nd 9th 10th Bit 0 T2 Bit 1 Parity Bit 2nd 3rd 10th
EC3592R
11th
Clock
Stop Bit
11th T9
Clock
Line-control Bit
E-CMOS SPEC 13.3 26.7 40 40 40 40 13.3 13.3 80 (Unit in s)
T7 Time from the rising edge of CLOCK to DATA sampled point. T8 Time from the rising edge of the 10th CLOCK to starting point of line-control bit. T9 The pulse width of line-control bit. (Base on oscillator frequency=70KHz)
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PS/2 Mouse Controller with Auto-Ref
PS/2 COMMAND LIST
HEX CODE FF FE F6 F5 F4 F3, XX F2 F0 EE EC EB EA E9 E8, XX E7 E6 A. F3, XX SET SAMPLING RATE SECOND BYTE XX 0A 14 28 3C 50 64 C8 SAMPLING RATE 10/sec. 20/sec. 40/sec. 60/sec. 80/sec. 100/sec. 200/sec. COMMAND Reset Resend Set Default Disable Enable Set Sampling Rate Read Device Type Set Remote Mode Set Wrap Mode Reset Wrap Mode Read Data Set Stream Mode Status Request Set Resolution Set Scaling 2:1 Reset Scaling EC3592'S RESPONSE FA, AA, 00 XX, (XX, XX) FA FA FA FA, FA FA, 00 FA FA FA FA, XX, XX, XX FA FA, XX, XX, XX FA, FA FA FA
EC3592R
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B. E9 STATUS REQUEST BYTE 3 2 1 BIT 0-7 0-7 7 6 5 4 3 2 1 0 C. E8, XX SET RESOLUTION SECOND BYTE XX 00 01 02 03 D. E7 SET SCALING 2:1 INPUT 0 1 2 3 4 5 N (6) OUTPUT 0 1 1 3 6 9 2.0xN RESOLUTION (COUNTS PER MM) 1 2 4 8 DESCRIPTION Current Sampling Rate (Bit 0=LSB) Current Sampling Setting (Bit 0=LSB) Reserved 0 = Stream Mode, 1 = Remote Mode 0 = Disabled, 1 = Enabled 0 = Scaling 1:1, 1 = Scaling 2:1 Reserved 1= Left Button Pressed Reserved 1 = Right Button Pressed
EC3592R
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PS/2 Mouse Controller with Auto-Ref
INPUT/OUTPUT EQUIVALENT CIRCUIT
EC3592R
Input Pin: TEST2 BL BM BR
I/O Pin: CLOCK DATA
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PS/2 Mouse Controller with Auto-Ref
EC3592R
Input Pin: PX1 PX2 PY1 PY2
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PS/2 Mouse Controller with Auto-Ref
APPLICATION CIRCUITS
(Note: This application circuit is for reference only)
EC3592R
VCC
1
VDD
10
PX1
DATA CLOCK
5 4
11 12
PX2 PY1
DATA CLOCK
+
13
PY2
-
10u
BL
9 8 7 14
270K
EC3592RE
BM BR
OSCR OSCOUT VSS
6
GND
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PS/2 Mouse Controller with Auto-Ref
Typical Application Circuit For HDNS-2000 Optical Input (For Reference Only)
VDD IN
EC3592R
3.3V REGULATOR LP2950ACZ-3.3
OUT
1
0.1 270K
10
1 14 VDD RIN Y1 DATA CLK 5 DATA 4 CLK EC3592RE X2 X1 Y1 Y2 BL BM BR 9 8 7 11 10 12 13 S1 S2 S3
14 13 7 VDD5 VDD5 VDD3 9 OSC1 REFB 8 HDNS-2000 11 OSC2 XY_LED 6 MODE/XA RB/XB MB/YB LB/YA GND 10 NRESET 15 PS2_D 16 PS2_C 1 GND 12
0.1
70
HLMP-ED80 SURFACE 2N3904
18.432MHZ(*) 2 3 4 5
GND 6
0.22
GND
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(*)Y1 IS A CERAMIC RESONATOR SUCH AS CSA18.43MXZ040 (FROM MURATA) OR KBR-18.43-MSA(FROM AVX).
Page 11 of 11 VERSION 1.1
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