參數(shù)資料
型號: EM83702A
廠商: ELAN Microelctronics Corp .
英文描述: ALL IN ONE MOUSE CONTROLLER
中文描述: ALL IN ONE的鼠標控制器
文件頁數(shù): 4/11頁
文件大?。?/td> 81K
代理商: EM83702A
EM83702
ALL IN ONE MOUSE CONTROLLER
4
* This specification are subject to be changed without notice.
4.15.1996
(B) Microsoft mode
In microsoft mode, the transmission cycle consists of three bytes. Each byte is divided into one start bit, seven
data bits and two stop bit. The first byte contains “L”,”R” switch status and four bits of the two most sig-
nificant bits in horizontal counter and vertical counter. The next byte represents the value accumulated by
horizontal counter, the last byte is the data of the vertical counter. Notice that “M” key-switch is not active
in the microsoft mode and the vertical data is transmited in 2’s complement.
Output byte arrange:
bit
no ......
6
5
4
3
2
1st
byte......
1
L
R
V7'
V6'
2nd
byte......
0
H5
H4
H3
H2
3rd
byte......
0
V5'
V4'
V3'
V2'
1
H7
H1
V1'
0
H6
H0
V0'
(C) Testing mode
Whenever OPT is connected to V
, 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.
(D) Echo mode
RXD will send out CD(H) code when RTS rise from low to high under microsoft mode. Under mouse
system mode, when RTS rise from low to high, the RXD pin EM83702 will send out two byte C8(H) code.
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