Chapter 1, Hardware Installation
13
Motherboard Connectors
Encoder Inputs (P1A, P1B), Cont’d
Note: P1A and P1B are 34-pin shrouded male headers.
P1A P1B
Usage Pin Pin
Usage
Usage Pin Pin Usage
CHA0 1 2 CHA0' CHA4 1 2 CHA4'
CHB0 3 4 CHB0' CHB4 3 4 CHB4'
MRK0 5 6 MRK0' MRK4 5 6 MRK4'
VCC 7 8 GND VCC 7 8 GND
CHA1 9 10 CHA1' CHA5 9 10 CHA5'
CHB1 11 12 CHB1' CHB5 11 12 CHB5'
MRK1 13 14 MRK1' MRK5 13 14 MRK5'
VCC
15 16 GND
VCC 15 16 GND
CHA2 17 18 CHA2' CHA6 17 18 CHA6'
CHB2 19 20 CHB2' CHB6 19 20 CHB6'
MRK2 21 22 MRK2' MRK6 21 22 MRK6'
VCC
23 24 GND
VCC 23 24 GND
CHA3 25 26 CHA3' CHA7 25 26 CHA7'
CHB3 27 28 CHB3' CHB7 27 28 CHB7'
MRK3 29 30 MRK3' MRK7 29 30 MRK7'
VCC
31 32 GND
VCC 31 32 GND
N.C. 33
34 N.C. N.C. 33
34 N.C.
Table 1.6 Encoder input connectors
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