SC84502 데이터 시트보기 (PDF) - Silan Microelectronics

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SC84502

PS/2 MOUSE CONTROLLER

Silan Microelectronics 

Silan

Semiconductors

SC84502

Byte

1

2

3

Bit

Description

0

1=Right button pressed

1

1=Middle button pressed

2

1= Left button pressed

3

Reserved

4

0=Normal speed, 1=Autospeed

5

0=Disabled, 1=Enabled

6

0=Stream mode, 1=Remote mode

7

Reserved

0–7

Current resolution setting (D0-D7)

0-7

Current sampling rate (D0-D7)

n). Set Resolution ( E8,XX )

SC84502 provides four resolutions selected by the second byte of this command as follows:

Second Byte XX

00

01

02

03

Resolution

8 dot/count

4 dot/count

2 dot/count

1 dot/count

o). Set Autospeed ( E7 )

At the end of a sample interval in the stream mode, the current X and Y data values are converted new

values. The sign bits are not involved in this conversion. The conversion is only in stream mode. The

relationship between the input and output count follows:

Input

0

1

2

3

4

5

N (≥6)

Output

0

1

1

3

6

9

2.0*N

p). Reset Autospeed ( E6 )

This command restore normal speed.

6.TESTING MODE

Whenever OPT is connected to OSC OUT, the chip will enter buyer's testing mode. The X direction output signals

of comparators will present to L and M pin. Pressing "R" key can toggle the output from X direction to Y direction.

HANGZHOU SILAN MICROELECTRONICS JOINT-STOCK CO.,LTD

Rev: 1.0 2000.12.31

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