J5 (JRS232) Serial Port Connector. Delta Tau PMAC2 PCI Lite HRM, PMAC2

PMAC2 PCI Lite Hardware Reference Manual – Preliminary Documentation

J5 (JRS232) Serial Port Connector

Pin #

1

2

DSR

4

5

6

7

Symbol

PHASE

DTR

TXD/

CTS

RXD/

RTS

DSR

Function

Output

Bidirect

Input

Input

Output

Output

Bidirect

Description

Phasing clock

Data terminal ready

Receive data

Clear to send

Send data

Req. to send

Data set ready

Notes

Tied to DSR

Host transmit data

Host ready bit

Host receives data

PMAC ready bit

Tied to DTR

8

9

SERVO

GND

Output

Common

Servo clock

PMAC common

10 +5V Output +5Vdc supply Power supply out

The JRS232 connector provides the PMAC2-PC with the ability to communicate serially with an RS232 port. This connector cannot be used for daisy-chain interconnection of multiple PMACs. The J5A RS-

422 port must be used for daisy chaining.

E17 and E18 must connect pins 1 and 2 to use the RS-232 port for serial communications.

J5A (RS422) Serial Port Connector

JRS422 (26-PIN Connector)

Pin #

1

2

Symbol

CHASSI

S+5V

Function Description

Common

Output

PMAC common

+5Vdc supply

Front View

Notes

10

11

12

13

14

15

3

4

5

6

7

8

9

RD-

RD+

SD-

SD+

CS+

CS-

RS+

RS-

DTR

INIT/

GND

DSR

SDIO-

Input

Input

Output

Output

Input

Input

Output

Output

Bidirect

Input

Common

Bidirect

Bidirect

Receive data

Receive data

Send data

Send data

Clear to send

Clear to send

Req. to send

Req. to send

Data term read

PMAC reset

PMAC common

Data set ready

Special data

Diff. I/O low true

Diff. I/O high true

Diff. I/O low true

Diff. I/O high true

Diff I/O high true

Diff. I/O low true

Diff. I/O high true

Diff I/O low true

Tied to DSR

Low is "reset"

Tied to DTR

Diff. I/O low true

16

17

18

19

20

SDIO+

SCIO-

SCIO+

SCK-

SCK+

Bidirect

Bidirect

Bidirect

Bidirect

Bidirect

Special data

Special ctrl.

Special ctrl.

Special clock

Special clock

Diff. I/O high true

Diff I/O low true

Diff. I/O high true

Diff. I/O low true

Diff. I/O high true

21

22

23

SERVO-

SERVO+

PHASE-

Bidirect

Bidirect

Bidirect

Servo clock

Servo clock

Phase clock

Diff. I/O low true

Diff. I/O high true

Diff. I/O low true

24

25

PHASE+

GND

Bidirect

Common

Phase clock

PMAC common

Diff. I/O high true

26 +5V Output +5Vdc supply Power supply out

E17 and E18 must connect pins 2 and 3 to use the RS-422 port for serial communications. This connector could be also used to daisychain interconnect multiple PMACs for synchronized operation.

Base Board Connector Pinouts 21