EM84502BP EMC [ELAN Microelectronics Corp], EM84502BP Datasheet - Page 10

• Manufacturer Part Number: EM84502BP
• Description: PS/2 MOUSE ENCODER
• Manufacturer: EMC [ELAN Microelectronics Corp]

AC Timing point:
* This specification are subject to be changed without notice.
(B) Sending DATA
CLK OUTPUT SIGNAL
EM84502 I/O pin equivalent circuit :
R,M,L :
CLK :
PS2 MOUSE ENABLE
(R,M,L)
DATA,
CLK PIN (PS/2 mouse mode)
Output:
CLK, DATA PIN
Input:
X1,X2,Y1,Y2 PIN
L,M,R PIN
CLK
DATA
CLK INPUT SIGNAL
>
Tsdc
>
<
Start
Tsci
CLK
INTERNAL SIGNAL
Bit
V
1st
DD
>
-2.6
(R,M,L)
<
Tscd
<
CLK
• • • • • • • • •
2nd
V
CC
Bit0 -Bit7
>
CLK
Tsca
<
DATA :
X1,X2,Y1,Y2 :
• • •
X1,X2,Y1,Y2
V
4
DD
V
CC
• • • • •
CLK
10th
PS2 MOUSE ENABLE
Parity
+
-
DATA OUTPUT SIGNAL
Bit
13.2K
12.5K
DATA INPUT SIGNAL
30K
>
V
DD
Tpi
V
+1.6V
V
V
V
CLK
11th
SS
SS
13.2K
39.6 A
DD
48.4 A
12.5K
SS
Stop
<
Bit
+0.4
+0.8
-0.8
V
V
PS/2 MOUSE CONTROLLER
DD
SS
V
DD
80µA
-
+
• • • • • • • • • • •
• • • • • • • • •
PHASE DIGITAL SIGNAL
V
CC
6.18.1998
V
CC
EM84502
DATA
10