Silan

Semiconductors

SC84510

HANGZHOU SILAN MICROELECTRONICS JOINT-STOCK CO.,LTD

Rev: 1.0

2000.12.31

11

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

Output

00

11

21

33

46

59

N(

≥6)

2.0*N

(p) Reset Auto-speed (E6)

This command restores normal speed.

2. MICROSOFT PS/2 SCROLLING MOUSE MODE:

(A) Entering procedure: Except in WRAP mode, While SC84520 received the following consecutive command.

(a) F3 C8

---- set sampling rate 200/sec

(b) F3 64

---- set sampling rate 100/sec

(c) F3 50

---- set sampling rate 80/sec

(B) Operating:

(a) All of the command in legacy mode still is valid.

(b) The ID code of read device type command (F2) will changed from “00” to be “03”.

(c) Data report will be four bytes format:

Byte

Bit

Description

1

0

Left button status; 1 = pressed

1

Right button status; 1 = pressed

2

Middle button status; 1 = pressed

3

Reserve

4

X data sign; 1 = negative

5

Y data sign; 1 = negative

6

X data overflow; 1 = overflow

7

Y data overflow; 1 = overflow

2

0 - 7

X data (D0 – D7)

3

0 - 7

Y data (D0 – D7)

4

0 - 7

Z data (D0 – D7)