EM84520
2-IN-ONE SCROLLING MOUSE CONTROLLER
TIMING DIAGRAM
(A) PS/2 mouse mode :
(A) Photo-couples pulse width
X1(Y1)
X2(Y2)
Tr
Tf
(B) Receiving Data
1st
CLK
2nd
CLK
9th
CLK
10th
CLK
11th
CLK
Inhibit
CLK
Tmca
Tmdc
Tmci
DATA
Stop
Bit
Line
Control
Bit
Start
Bit
Parity
Bit
Bit0-Bit7
(C) Sending Data
10th
1st
2nd
11th
CLK
CLK
CLK
CLK
CLK
Tsci
Tsca
Tpi
Tscd
Tsdc
DATA
Stop
Bit
Start
Bit
Parity
Bit
Bit0-Bit7
6.28.1999
* This specification are subject to be changed without notice.
14