eKM8025
USB & PS/2 Mouse Controller
3. Pin assignment
◆eKM8025AB /eKM8025BB (18-Pin) for 3D3Key
□□□□□□□□
4 3 2 1 18171615
1z
2
18
17
16
15
14
13
12
11
10
M KEY□
L KEY□
Z1□
□X1
(0,0)
□X2
+
3
□Y1
4
Z2□
□Y2
5
R KEY□
NA□
□IR_C
□D+ / CLK
□D- / DATA
□VDD
□OSCO
□
□
□
□
6
5
6
7
14
□
7
X
VSS□
V3.3□
OSCI□
□
8
13
8
□
9 101112
□□□□
9
eKM8025AB/eKM8025BB (18-Pin)
Bounding PAD
Symbol I/O PIN
Function
M
I
1
2
Middle Key Input
Left Key Input
L
I
Z1
I
3
4
5
Z axis Input 1
Z axis Input 2
Right Key Input
Z2
I
R
I/O
K_OP
VSS
I
6
7
This pin should be connected to V3.3(pin8)
-
O
I
GND
V3.3V
OSCI
OSCO
VDD
8
3.3V DC voltage output from internal regulator. This pin has to be tied to a 4.7μF capacitor.
6MHz ceramic resonator input.
9
I/O
-
10
11
12
13
14
Return path for 6-MHz ceramic resonator.
5 V Power Input
D- / DATA
D+ / CLK
IR_C
Y2
I/O
I/O
O
I
USB D- or PS/2 Data I/O
USB D+ or PS/2 CLK I/O
IR(Sensor power) Control Pin. 1
15
Y axis Input 2
Y1
I
16
17
Y axis Input 1
X axis Input 2
X2
I
X1
I
18
X axis Input 1
3
This specification are subject to be changed without notice Revision1.00(2400/2500) 2006/7/11
ELAN [ ELAN MICROELECTRONICS CORP ]
