Delta Tau PMAC2-PC, Hardware Reference Manual

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Turbo PMAC2 Hardware Reference Manual
J5A: RS422 Serial Port Connector
J5A/JRS422 (26-Pin Header)
Front View
Pin # Symbol Function Description Notes
1 CHASSI COMMON PMAC Common
2 S+5V OUTPUT +5Vdc Supply Deactivated by "E8"
3 RD- INPUT Receive Data Diff. I/O low true **
4 RD+ INPUT Receive Data Diff. I/O high true *
5 SD- OUTPUT Send Data Diff. I/O low true **
6 SD+ OUTPUT Send Data Diff. I/O high true *
7 CS+ INPUT Clear To Send Diff. I/O low true **
8 CS- INPUT Clear To Send Diff. I/O low true **
9 RS+ OUTPUT Req. To Send Diff. I/O high true **
10 RS- OUTPUT Req. To Send Diff. I/O low true *
11 DTR BIDIRECT Data Term Read Tied to "DSR"
12 INIT/ INPUT PMAC Reset Low is "reset"
13 GND COMMON PMAC Common **
14 DSR BIDIRECT Data Set Ready Tied to "DTR"
15 SDIO- BIDIRECT Special Data Diff. I/O low true
16 SDIO+ BIDIRECT Special Data Diff. I/O high true
17 SCIO- BIDIRECT Special Ctrl. Diff. I/O low true
18 SCIO+ BIDIRECT Special Ctrl. Diff. I/O high true
19 SCK- BIDIRECT Special Clock Diff. I/O low true
20 SCK+ BIDIRECT Special Clock Diff. I/O high true
21 SERVO- BIDIRECT Servo Clock Diff. I/O low true ***
22 SERVO+ BIDIRECT Servo Clock Diff. I/O high true ***
23 PHASE- BIDIRECT Phase Clock Diff. I/O low true ***
24 PHASE+ BIDIRECT Phase Clock Diff. I/O high true ***
25 GND COMMON PMAC Common
26 +5V OUTPUT +5Vdc Supply Power supply out
The JRS422 connector provides the PMAC with the ability to communicate both in RS422 and
RS232. In addition, this connector is used to daisychain interconnect multiple PMACs for
synchronized operation.
Jumpers E17 and E18 must connect pins 2 and 3 to use this port for serial communications.
Connector Pinouts 17
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