eKM8050
Preliminary
USB & PS/2 Optical Mouse Controller
CPIS 1 ꢁ
L KEY 2
18 Z1
17 Z2
R KEY 3
M KEY 4
SCLK 5
Z_SEL 6
VSS 7
16 IR_C
15 PD
14 SDIO
13 D+/CLK
12 D-/Data
11 VDD
V3.3 8
OSCI 9
10 OSCO
eKM8050B (18-Pin)
Symbol I/O PIN
Function
OSCI
OSCO
V3.3V
Z1
I
I/O
O
I
9
10
8
6MHz ceramic resonator input.
Return path for 6-MHz ceramic resonator.
3.3V DC voltage output from internal regulator. This pin has to be tied to a 4.7μF capacitor.
18
17
16
15
1
Z axis Input 1
Z axis Input 2
Z2
I
IR Control Pin
IR_C
PD
I/O
I
2051 Power Down Pin
400/800 CPI Selection Pin ; 1 : 800 CPI ; 0 : 400 CPI
Right Key Input
CPIS
R
I
3
I
4
Middle Key Input
M
I
L
I
2
Left Key Input
SCLK
SDIO
D+ / CLK
D- / DATA
VDD
I/O
I/O
I/O
I/O
-
5
Serial Clock to Agilent sensor IC SCLK
Serial Data from Agilent sensor IC SDIO
USB D+ or PS/2 CLK I/O
14
13
12
11
6,7
USB D- or PS/2 Data
5 V Power Input
GND
I/O
VSS
-
Z_SEL
I
6
Z/2 : Ground；Z/4: Floating This function only support by eKM8050B
2
2003/7/1
ELAN [ ELAN MICROELECTRONICS CORP ]
