User's Manual
PMAC2 PCI Lite Hardware Reference Manual – Preliminary Documentation
Base Board Connector Pinouts 29
J9 JMACH1 Connector
(Continued)
Front View
Pin# Symbol Function Description Notes
90 PWMBTOP2-
DAC_STB2-
Output Phase B Top CMD or DAC
strobe
Programmable function control
91 PWMBBOT2+
DAC2B+
Output Phase B Bottom CMD or
DAC B serial data
Programmable function control
92 PWMBBOT2-
DAC2B-
Output Phase B Bottom CMD or
DAC B serial data
Programmable function control
93 PWMCTOP2+
DIR2+
Output Phase B Top CMD or PFM
direction
Programmable function control
94 PWMCTOP2-
DIR2-
Output Phase B Top CMD or PFM
direction
Programmable function control
95 PWMCBOT2+
PULSE2+
Output Phase B Bottom CMD or
PFM pulse
Programmable function control
96 PWMCBOT2-
PULSE2-
Output Phase B Bottom CMD or
PFM pulse
Programmable function control
97 GND Common Reference voltage
98 GND Common Reference voltage
99 +5V Output / Input +5V power For external circuit or from
external supply
100 +5V Output / Input +5V power For external circuit or from
external supply
The JMACH1 connector provides the interface pins for channels 1 and 2. Usually, it is connected to a
breakout board, such as one of the Acc-8x family of boards, or an application-specific interface board.
J10 (JMACH2) Connector Description
J10 JMACH2 Connector
Front View
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 CHA3+ Input Encoder 3 positive A channel Also pulse input
6 CHA3- Input Encoder 3 negative A channel Also pulse input
7 CHB3+ Input Encoder 3 positive B channel Also direction input
8 CHB3- Input Encoder 3 negative B channel Also direction input
9 CHC3+ Input Encoder 3 positive C channel Index channel
10 CHC3- Input Encoder 3 negative C channel Index channel
11 CHU3 Input Channel 3 U flag Hall effect, fault code, or sub-
count
12 CHV3 Input Channel 3 V flag Hall effect, fault code, or sub-
count
13 CHW3 Input Channel 3 W flag Hall effect, fault code, or sub-
count