HT82M33A 데이터 시트보기 (PDF) - Holtek Semiconductor

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HT82M33A

3D Mouse Controller

Holtek Semiconductor 

• Encourage the Plug and Play mouse ID

RTS

RXD

15ms

'4d 5a 40 00 00 00'+PnP ID stream

HT82M33A

PS/2 mouse

• PS/2 status byte

bit

7:RESERVED

6: 0=STREAM MODE, 1= REMOTE MODE

5: 0=DISABLED, 1=ENABLED

4: 0=SCALING 1:1, 1= SCALING 2:1

3: 1=WRAP MODE, 0=STREAM or REMOTE

(different from IBM spec.)

2: 1= LEFT BUTTON PRESSED

1: 1= MIDDLE BUTTON PRESSED

0: 1= RIGHT BUTTON PRESSED

• Standard PS/2 data format

Variable rps, O, 8, 1, bidirectional, synchronous

Bit No. 7 6 5 4 3 2 1 0

1st word YV XV YS XS 1 M R L

2nd word X7 X6 X5 X4 X3 X2 X1 X0

3rd word Y7 Y6 Y5 Y4 Y3 Y2 Y1 Y0

• Data format for 3D PS/2

Variable rps, O, 8, 1, bidirectional, synchronous

Bit No. 7 6 5 4 3 2 1 0

1st word YV XV YS XS 1 Ro R L

2nd word X7 X6 X5 X4 X3 X2 X1 X0

3rd word Y7 Y6 Y5 Y4 Y3 Y2 Y1 Y0

4th word Z7 Z6 Z5 Z4 Z3 Z2 Z1 Z0

The x/y data report is 9-bit 2’s complement

The z data report is 8-bit 2’s complement

X move right is positive, move left is negative

Y move up is positive, move down is negative

Z rolling toward user is positive, else is negative

Button status : 1=pressed, 0=released

• Mouse mode changes between Standard and

3D PS/2 mode

Sending the commands in the following se-

quence will set the mouse to 3D PS/2 mode.

Command Response From Mouse

F3h

FAh

C8h

FAh

F3h

FAh

64h

FAh

F3h

FAh

50h

FAh

F2h

FAh, 03h

* Any time the PC sends a reset “FFh” com-

mand to the mouse, it will reset the mouse

to Standard PS/2 mode.

* After power on reset is initiated, the mouse

is set to Standard PS/2 mode.

6

3rd Mar ’99

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