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8XC196MC, MD, MH USER’S MANUAL
11-8
Figure 11-3. Quadrature Mode Interface
Table 11-4. Quadrature Mode Truth Table
State of X_internal
(T1CLK)
State of Y_internal
(T1DIR)
Count Direction
↑ 0 Increment
↓ 1 Increment
0 ↓ Increment
1 ↑ Increment
↓ 0 Decrement
↑ 1 Decrement
0 ↑ Decrement
1 ↓ Decrement
Optical
Reader
T1DIR
T1CLK
D Q D Q D Q
D Q D Q D Q
X_internal
Y_internal
PH2
PH1
MCS
®
96 Microcontroller
Increment
Decrement
X
Y
A1550-01