User's Manual

PMAC2 PCI Hardware Reference Manual
Base Board Connector Pinouts 35
J12 JMACH4 Connector
(Continued)
Front View
Pin# Symbol Function Description Notes
51 +5V Output / Input +5V power For external circuit or from external
Supply
52 +5V Output / Input +5V power For external circuit or from external
supply
53 GND Common Reference voltage
54 GND Common Reference voltage
55 CHA8+ Input Encoder 8 positive A channel Also pulse input
56 CHA8- Input Encoder 8 negative A channel Also pulse input
57 CHB8+ Input Encoder 8 positive B channel Also direction input
58 CHB8- Input Encoder 8 negative B channel Also direction input
59 CHC8+ Input Encoder 8 positive C channel Index channel
60 CHC8- Input Encoder 8 negative C channel Index channel
61 CHU8 Input Channel 8 U flag Hall effect, fault code, or sub-count
62 CHV8 Input Channel 8 V flag Hall effect, fault code, or sub-count
63 CHW8 Input Channel 8 W flag Hall effect, fault code, or sub-count
64 CHT8 Input Channel 8 T flag Fault code, or sub-count
65 USER8 Input General purpose user flag Hardware capture flag, or sub-count
66 PLIM8 Input Positive overtravel limit Hardware capture flag
67 MLIM8 Input Negative overtravel limit Hardware capture flag
68 HOME8 Input Home switch input Hardware capture flag
69 ACCFLT8 Input Accessory fault flag For loss of ACC supply voltage
70 WD0/ Output Watchdog output Low is PMAC watchdog fault
71 SCLK78+ Input / Output Encoder sample clock Direction controlled by PMAC2
jumper
72 SCLK78- Input / Output Encoder sample clock Direction controlled by PMAC2
jumper
73 ADC_CLK8+ Output A/D converter clock Programmable frequency
74 ADC_CLK8- Output A/D converter clock Programmable frequency
75 ADC_STB8+ Output A/D converter strobe Programmable sequence
76 ADC_STB8- Output A/D converter strobe Programmable sequence
77 ADC_DAA8+ Input Channel A ADC serial data MSB first
78 ADC_DAA8- Input Channel A ADC serial data MSB first
79 ADC_DAB8+ Input Channel B ADC serial data MSB first
80 ADC_DAB8- Input Channel B ADC serial data MSB first
81 AENA8+ Output Amplifier enable High is enable
82 AENA8- Output Amplifier enable Low is enable
83 FAULT8+ Input Amplifier fault Programmable polarity
84 FAULT8- Input Amplifier fault Programmable polarity
85 PWMATOP8+
DAC_CLK8+
Output Phase A top Cmd. or DAC
clock
Programmable function control
86 PWMATOP8-
DAC_CLK8-
Output Phase A top Cmd. or DAC
clock
Programmable function control
87 PWMABOT8+
DAC8A+
Output Phase A bottom Cmd. or
DAC A serial data
Programmable function control
88 PWMABOT8-
DAC8A-
Output Phase A bottom Cmd. or
DAC A serial data
Programmable function control
89 PWMBTOP8+
DAC_STB8+
Output Phase B top Cmd. or DAC
strobe
Programmable function control