10-7
EVENT PROCESSOR ARRAY (EPA)
Figure 10-3. Quadrature Mode Interface
Table 10-3. Quadrature Mode Truth Table
State of X_internal
(T
x
CLK)
State of Y_internal
(T
x
DIR)
Count Direction
↑ 0 Increment
↓ 1 Increment
0 ↓ Increment
1 ↑ Increment
↓ 0 Decrement
↑ 1 Decrement
0 ↑ Decrement
1 ↓ Decrement
Optical
Reader
T
x
DIR
T
x
CLK
D Q D Q D Q
D Q D Q D Q
X_internal
Y_internal
PH2
PH1
8XC196 Device
Increment
Decrement
X
Y
A0268-02