User`s manual

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