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
BLBMBRPX1PX2
AUTOX MOVEMENTREFPROCESSBUTTONPROCESSSELECTIONTEST
PY1PY2
AUTOY MOVEMENTREFPROCESSCOMMANDPROCESSERRORPROCESSX/YRESOLUTIONX/YSCALEINFORMATIONPROCESSCLOCKDATA
OSCROSCOUTOSCILLATORTIMINGGENERATORX/YSAMPLING
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PS/2 Mouse Controller with Auto-Ref EC3592R
PIN CONFIGURATIONS
NCNCNCOSCROSCOUTCLOCKDATAVSS
1 2 3 4 5 6 7 8 16 15 14 13 12 11 10 9 VDDPY2 PY1 PX2 PX1 BL BM BR
VDDNCOSCOUTCLOCKDATAVSS12314 13 12 OSCR PY2 PY1 PX2 PX1 BL BM EC3592RS 4EC3592RE 11 56710 9 8 BR
PIN DESCRIPTIONS
PIN NAME I/O OSCR OSCOUT CLOCK
I O
FUNCTION
Crystal or RC oscillation input. Crystal or RC oscillation output.
I/O 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 I/O BR
I
FUNCTION
Right button selection. Built-in pull-down resistor of 50KΩBR 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 50KΩ. It is also edge-triggered button operation
BL
I
as “BR”.
Left button selection. Built-in pull-down resistor of 50KΩ. It is also edge-triggered button operation as “BR”.
PX1 PX2
I I
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.
PY1 PY2
I I
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.
VDD
P
+5V power supply.
ABSOLUTE MAXIMUM RATINGS
PARAMETER Supply Voltage Ambient Temperature Storage Temperature Power Dissipation (Temp. = 70 ℃)
SYMBOL Vdd Tamb Tstg
MIN. MAX. UNIT 0 0 -40
6.5 70 125
V ℃ ℃
Pd 100 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 EC3592R
maximum rating may affect device reliability.
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 KΩ Rcd 5 SYMBOLVdd Iop Vir Via Rpxy Vih Vil
MIN. TYP. MAX. UNIT4.5 0.1 0.6 3.2
5 1.0 12
5.5 2.5 3.2 1.3
V mA V V
KΩ V
V KΩ Rbut 50 Iol 8 mA AC ELECTRICAL CHARACTERISTICS
PARAMETER Oscillator Frequency
R=270 KΩ BL/BM/BR Button Debounce Time
SYMBOL
MIN. TYP. MAX. UNIT
Foscr 62 75 90 KHz Tbd
43
ms
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PS/2 Mouse Controller with Auto-Ref EC3592R
TIMING DIAGRAM
Mouse sends data out:
1st
CLOCKDATA
T3T4T1StartBit
Bit 0T2Bit 1
ParityBit
StopBit
2nd
3rd
10th
11th
Clock
Mouse receive data:
1st
CLOCKDATA
StartBit
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
40 40 40 40
IBM SPEC E-CMOS SPEC5~25 13.3 5~(T4-5) 26.7 T5T6Bit 0
T7ParityBit
StopBit
Line-controlBit
2nd
9th
10thT811thT9Clock
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.
5~25 13.3 13.3
80
(Base on oscillator frequency=70KHz)
. (Unit in μs)
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PS/2 Mouse Controller with Auto-Ref EC3592R
PS/2 COMMAND LIST
HEX CODE
COMMAND EC3592’S RESPONSE
FF Reset FA, AA, 00 FE Resend XX, (XX, XX) F6 Set Default F5 Disable F4 Enable F3, XX F2
Set Sampling Rate Read Device Type
FA FA FA FA, FA FA, 00 FA FA FA FA FA, XX, XX, XX
FA, FA
FA FA
F0 Set Remote Mode EE Set Wrap Mode EC Reset Wrap Mode EB EA E9 E8, XX
Read Data Set Stream Mode Status Request Set Resolution
FA, XX, XX, XX
E7 Set Scaling 2:1 E6 Reset Scaling
A. F3, XX SET SAMPLING RATE
SECOND BYTE XX
SAMPLING RATE
0A 10/sec. 14 20/sec. 28 40/sec. 3C 60/sec. 50 80/sec. 64 100/sec. C8 200/sec.
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PS/2 Mouse Controller with Auto-Ref EC3592R
B. E9 STATUS REQUEST
BYTE 3 2
C. E8, XX SET RESOLUTION
SECOND BYTE XX RESOLUTION (COUNTS PER MM)
00 1 01 2 02 4 03 8
D. E7 SET SCALING 2:1
INPUT
OUTPUT
0 0 1 1 2 1 3 3 4 6 5 9 N (≧6) 2.0×N
BIT 0-7 0-7 6 5 4 2 0
DESCRIPTION
Current Sampling Rate (Bit 0=LSB) Current Sampling Setting (Bit 0=LSB)
Reserved
0 = Disabled, 1 = Enabled 0 = Scaling 1:1, 1 = Scaling 2:1
Reserved 1= Left Button Pressed
Reserved
1 = Right Button Pressed 0 = Stream Mode, 1 = Remote Mode
1 7 3 1
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PS/2 Mouse Controller with Auto-Ref EC3592R
INPUT/OUTPUT EQUIVALENT CIRCUIT
Input Pin:TEST2BLBMBR
I/O Pin:CLOCKDATA
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PS/2 Mouse Controller with Auto-Ref EC3592R
Input Pin:PX1PX2PY1PY2
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PS/2 Mouse Controller with Auto-Ref EC3592R
APPLICATION CIRCUITS
(Note: This application circuit is for reference only)
VCC1VDD101112PX1PX2PY1PY2DATACLOCK54DATACLOCK+13-10uEC3592REBLBMBROSCR98714270KΩOSCOUTVSS6GND
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