eKM8025
USB & PS/2 Mouse Controller
4. Function description
X1
X2
Y1
Y2
X-COUNTER
Y-COUNTER
Z-COUNTER
X
Y
USB PROTOCOL
CONTROLLER
DATA
PROCESS
PS/2PROTOCOL
CONTROLLER
Z1
Z2
Z
BTM REGISTER
MULTIPLEXER
DATA
I/O
D+/CLK
D-/DATA
IR_C
IR_C
LMRPN
MODE
SELECTOR
DETECT
CIRCUIT
L M R
P N
Fig-1 : Function block
◆Quadrature Signal Timing Diagram
◇X、Y、Z Axis Counting
XY AXIS COUNTING
X1(Y1)
X2(Y2)
+1
+1
+1
+1
-1
-1
-1
-1
Z/2 COUNTING
Z1
Z2
+1
+1
-1
-1
5
This specification are subject to be changed without notice Revision1.00(2400/2500) 2006/7/11