User's Manual

Turbo PMAC2 PCI Hardware Reference Manual
28 Baseboard Connector Pinouts
J9 (JMACH1) Connector Description
J9 (JMACH1)
Connector Description
Pin # Symbol Function Description Notes
1 +5V Output/Input +5V power For external circuit or from
external supply
2 +5V Output/Input +5V power For external circuit or from
external supply
3 GND Common Reference voltage
4 GND Common Reference voltage
5 CHA1+ Input Encoder 1 positive A channel Also pulse input
6 CHA1- Input Encoder 1 negative A channel Also pulse input
7 CHB1+ Input Encoder 1 positive B channel Also direction input
8 CHB1- Input Encoder 1 negative B channel Also direction input
9 CHC1+ Input Encoder 1 positive C channel Index channel
10 CHC1- Input Encoder 1 negative C channel Index channel
11 CHU1 Input Channel 1 U flag Hall effect, fault code, or sub-
count
12 CHV1 Input Channel 1 V flag Hall effect, fault code, or sub-
count
13 CHW1 Input Channel 1 W flag Hall effect, fault code, or sub-
count
14 CHT1 Input Channel 1 T flag Fault code or sub-count
15 USER1 Input General purpose user flag Hardware capture flag or sub-
count
16 PLIM1 Input Positive overtravel limit Hardware capture flag
17 MLIM1 Input Negative overtravel limit Hardware capture flag
18 HOME1 Input Home switch input Hardware capture flag
19 ACCFLT1 Input Accessory fault flag For loss of ACC supply voltage
20 WD0/ Output Watchdog output Low is PMAC watchdog fault
21 SCLK12+ Input/Output Encoder sample clock Direction controlled by PMAC2
jumper
22 SCLK12- Input/Output Encoder sample clock Direction controlled by PMAC2
jumper
23 ADC_CLK1+ Output A/D converter clock Programmable frequency
24 ADC_CLK1- Output A/D converter clock Programmable frequency
25 ADC_STB1+ Output A/D converter strobe Programmable sequence
26 ADC_STB1- Output A/D converter strobe Programmable sequence
27 ADC_DAA1+ Input Channel A ADC serial data MSB first
28 ADC_DAA1- Input Channel A ADC serial data MSB first
29 ADC_DAB1+ Input Channel B ADC serial data MSB first
30 ADC_DAB1- Input Channel B ADC serial data MSB first
31 AENA1+ Output Amplifier enable High is enable
32 AENA1- Output Amplifier enable Low is enable
33 FAULT1+ Input Amplifier fault Programmable parity
34 FAULT1- Input Amplifier fault Programmable parity