Silan

Semiconductors

SC84520

HANGZHOU SILAN MICROELECTRONICS JOINT-STOCK CO.,LTD

Rev: 1.0

2000.12.31

6

X1, X2, Y1, Y2 INPUT IMPEDANCE

0

1.0

2.0

3.0

4.0

5.0

5.0

UNIT:K

MAX.

TYP.

MIN.

7.0

8.0

9.0

6.0

2.0

3.0

4.0

1.0

10.0

15.0

16.0

12.0

13.0

14.0

11.0

INPUT VOLTAGE

FUNCTION DESCRIPTIONS

1.SERIAL SCROLLING MOUSE

In Microsoft mode, the transmission cycle consists of four bytes in one report. Each byte contains one start bit, 7

data bits and two stop bits, The first byte contains “L”, “R” key status and four bits of the two most significant bits

in horizontal counter and vertical counter. The second byte represents the value accumulated by horizontal

counter, the third byte is the data of the vertical counter, The last byte contains “M” key status and Z-axis value.

The vertical data is transmitted in 2’s complement.

Output byte arrange:

Bit No.

……

6543210

1st Byte

……

1L

R

V7’

V6’

H7

H6

2nd Byte

……

0

H5H4H3H2H1H0

3rd Byte

……

0

V5’

V4’

V3’

V2’

V1’

V0’

4th Byte

……

0

0

M

Z3Z2Z1Z0

Plug & Play ID code

When RTS input from low to high, SC84520 will send a string ID code. Customer can specify the contains of the

code area and the total length below 100 bytes by changing the code layer.