User's Manual

PMAC2 PCI Hardware Reference Manual
34 Base Board Connector Pinouts
J12 JMACH4 Connector
(Continued)
Front View
Pin# Symbol Function Description Notes
20 WD0/ Output Watchdog output Low is PMAC watchdog fault
21 SCLK78+ Input / Output Encoder sample clock Direction controlled by PMAC2
jumper
22 SCLK78- Input / Output Encoder sample clock Direction controlled by PMAC2
jumper
23 ADC_CLK7+ Output A/D converter clock Programmable frequency
24 ADC_CLK7- Output A/D converter clock Programmable frequency
25 ADC_STB7+ Output A/D converter strobe Programmable sequence
26 ADC_STB7- Output A/D converter strobe Programmable sequence
27 ADC_DAA7+ Input Channel A ADC serial data MSB first
28 ADC_DAA7- Input Channel A ADC serial data MSB first
29 ADC_DAB7+ Input Channel B ADC serial data MSB first
30 ADC_DAB7- Input Channel B ADC serial data MSB first
31 AENA7+ Output Amplifier enable High is enable
32 AENA7- Output Amplifier enable Low is enable
33 FAULT7+ Input Amplifier fault Programmable polarity
34 FAULT7- Input Amplifier fault Programmable polarity
35 PWMATOP7+
DAC_CLK7+
Output Phase A top Cmd. or DAC
clock
Programmable function control
36 PWMATOP7-
DAC_CLK7-
Output Phase A top Cmd. or DAC
clock
Programmable function control
37 PWMABOT7+
DAC7A+
Output Phase A bottom Cmd. or
DAC A serial data
Programmable function control
38 PWMABOT7-
DAC7A-
Output Phase A bottom Cmd. or
DAC A serial data
Programmable function control
39 PWMBTOP7+
DAC_STB7+
Output Phase B top Cmd. or DAC
strobe
Programmable function control
40 PWMBTOP3-
DAC_STB7-
Output Phase B top Cmd. or DAC
strobe
Programmable function control
41 PWMBBOT7+
DAC7B+
Output Phase B bottom Cmd. or DAC
B serial data
Programmable function control
42 PWMBBOT7-
DAC7B-
Output Phase B bottom Cmd. or DAC
B serial data
Programmable function control
43 PWMCTOP7+
DIR7+
Output Phase B top Cmd. or PFM
direction
Programmable function control
44 PWMCTOP7-
DIR7-
Output Phase B top Cmd. or PFM
direction
Programmable function control
45 PWMCBOT7+
PULSE7+
Output Phase B bottom Cmd. or PFM
Pulse
Programmable function control
46 PWMCBOT7-
PULSE7-
Output Phase B bottom Cmd. or PFM
pulse
Programmable function control
47 GND Common Reference voltage
48 GND Common Reference voltage
49 +5V Output / Input +5V power For external circuit or from external
supply
50 +5V Output / Input +5V power For external circuit or from external
supply