EM84510AP ELAN Microelectronics Corp, EM84510AP Datasheet - Page 2

• Manufacturer Part Number: EM84510AP
• Description: PS/2 SCROLLING MOUSE CONTROLLER
• Manufacturer: ELAN Microelectronics Corp

* This specification are subject to be changed without notice.
PIN DESCRIPTIONS
FUNCTIONAL BLOCK DIAGRAM
Symbol
OPT
OSC.OUT
OSCR
CLK
DATA
R/M/L
X1
X2
Y1
Y2
Z1
Z2
VSS
VDD
I/O
I/O
I/O
I/O
O
I
I
I
OPT
X1
X2
Y1
Y2
M
L
R
Z1
Z2
O
M
A
A
O
C
P
R
T
R
OSC.OUT
D
E
B
O
U
N
C
E
M
INPUT: 200kohm pull low to VSS.
When OPT is connected to VDD, EM84510 will enter test mode. In test mode,
L will be the output of X1,while M will be the output of X2. Toggling R key can
change these output to be Y1,Y2 or Z1,Z2 respectively.
OUTPUT: 2kHz Z-axis LED driving source.
High duty is about 60us.
RC mode oscillation with 51kohm resistor.
Connect to 8042 auxiliary port CLK line.
Connect to 8042 auxiliary port DATA line.
Three key-switches inputs.
200kohm resistor pull low.
Three step dynamic input impedance.
Use current comparator to measure photo-couples "ON" ,or "OFF".
Z-axis inputs.
Photo mode: Three step dynamic input impedance. Current comparator input.
Key
Voltage mode: 200kohm resistor pull low. 7 levels voltage comparator.
Mechanical mode : 13.2kohm resistor pull low.
Negative power.
Power line.
O
T
O
N
I
"1"= VDD, "0"= floating
OSCR
D
E
T
E
C
T
O
R
mode: 200kohm resistor pull low. 7 levels increased by "M" key.
COUNTER
COMPARATOR
THREE TYPES SELECTOR
SYSTEM CLOCK
OSCILLATION
GENERATOR
Z-AXIS COUNTER
COMMON
STATUS
VOLTAGE
RC
SENSOR
MULTIPLEXER
PS/2 SCROLLING MOUSE CONTROLLER
KEY-SWITCH
DETECTOR
Function
CONTROLLER
TIMING
DATA CLK
DATA
I/O
5.30.2001
EM84510
2