Rabbit RCM3000 User Manual page 122

Register Name
Quad Decode Control
Register
7:6
5:4
3:2
1:0
Quad Decode Count Register
7:0
114
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Table E-5. Quadrature Decoder Registers (continued)
Mnemonic
QDCR
Bit Value
0x
10
11
xx
0x
10
11
0
1
10
11
QDC1R
(QDC2R)
Bit(s) Value
read
Address
Address = 10010001 (0x91)
Description
Disable Quadrature Decoder 2 inputs. Writing a new
value to these bits will not cause Quadrature
Decoder 2 to increment or decrement.
Quadrature Decoder 2 inputs from Port F bits 3 and
2.
Quadrature Decoder 2 inputs from Port F bits 7 and
6.
These bits are ignored.
Disable Quadrature Decoder 1 inputs. Writing a new
value to these bits will not cause Quadrature
Decoder 1 to increment or decrement.
Quadrature Decoder 1 inputs from Port F bits 1 and
0.
Quadrature Decoder 1 inputs from Port F bits 5 and
4.
Quadrature Decoder interrupts are disabled.
Quadrature Decoder interrupt use Interrupt Priority
1.
Quadrature Decoder interrupt use Interrupt Priority
2.
Quadrature Decoder interrupt use Interrupt Priority
3.
Address = 10010100 (0x94)
Address = 10010110 (0x96)
Description
The current value of the Quadrature Decoder
counter is reported.
RabbitCore RCM3000