HT82M35D-1 데이터 시트보기 (PDF) - Holtek Semiconductor

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HT82M35D-1

3/5-Key 3D PS/2 Optical Mouse Controller

Holtek Semiconductor 

Preliminary

HT82M35X

A.C. Characteristics

Symbol

Parameter

tWDTOSC

tWDT1

tRES

Watchdog Oscillator Period

Watchdog Time-out Period

External Reset Low Pulse Width

Ta=25°C

Test Conditions

VDD

Conditions

Min. Typ. Max. Unit

5V

¾

32 65 130 ms

5V Without WDT prescaler 8

17

33 ms

¾

¾

1

¾

¾

ms

Functional Description

PS/2 Mouse

· PS/2 status byte

Byte 1

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 specs.)

2: 1=Left Button Pressed

1: 1=Middle Button Pressed

0: 1=Right Button Pressed

Byte 2

Bit 0~7 current resolution setting

(Bit 0=LSB)

Byte 3

Bit 0~7 current sampling rate (Bit 0=LSB)

· Standard PS/2 data format

Variable rps, 0, 8, 1, bidirectional, synchronous

Bit No. 7 6 5 4 3 2 1 0

1st word YV XV YS XS 1 MB RO LB

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, 0, 8, 1, bidirectional, synchronous

Bit No. 7 6 5 4 3 2 1 0

1st word YV XV YS XS 1 MB RO LB

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

· Data format for 5-button Wheel Mouse

Bit No. 7 6 5 4 3 2 1 0

1st word 0 0 YS XS 1 MB RO LB

2nd word X7 X6 X5 X4 X3 X2 X1 X0

3rd word Y7 Y6 Y5 Y4 Y3 Y2 Y1 Y0

4th word 0 0 RB1 RB0 Z3 Z2 Z1 Z0

X- movement towards the right is positive, moving to-

wards the left is negative

Y- upward movement is positive, moving down is nega-

tive

Z- rolling towards the user is positive, else negative

Button status: 1=pressed, 0=released

· Mouse mode changes between Standard and 3D

PS/2 mode

Sending the commands in the following sequence 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

· Mouse mode changes between Standard and Win2K

PS/2 mode.

Sending the commands in the following sequence will

set the mouse to Win2K PS/2 mode.

Command

Response From Mouse

F3h

FAh

C8h

FAh

F3h

FAh

C8h

FAh

F3h

FAh

50h

FAh

F2h

FAh, 04h

¨ Any time the PC sends a reset ²FFh² command 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.

Rev. 1.00

3

May 30, 2007

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