Chapter 2 Hardware Configuration

2-16. COM PORT CONNECTOR

There are four COM ports enhanced in this board namely: COM1, COM2, COM3 and COM4. COM1, COM3 and COM4 are fixed for RS-232, while COM2 is selectable for RS-232/422/485.

COM1 : COM1 Connector

The COM1 Connector assignments are as follows :

PIN ASSIGNMENT

1DCD1

2RX1

3TX1

4DTR1

5GND

6DSR1

7RTS1

8CTS1

9RI1

COM1

COM2 : COM2 Connector

The COM2 Connector assignments are as follows :

PIN

ASSIGNMENT

 

 

 

RS-232

RS-422

RS-485

 

1

DCD2

TX-

TX-

 

2

RX2

TX+

TX+

COM2

3

TX2

RX+

RX+

4

DTR2

RX-

RX-

 

5

GND

GND

GND

 

6

DSR2

RTS-

NC

 

7

RTS2

RTS+

NC

 

8

CTS2

CTS+

NC

 

9

RI2

CTS-

NC

 

PPC-7508F USERS MANUAL

Page: 2-19

Page 33
Image 33
Intel PPC-7508F M1 user manual COM Port Connector, RS-232 RS-422 RS-485