Hardware Reference

The serial interface uses a 9-pin D-type male connector for which the pin numbering is shown in Figure 3-2.

Figure 3-2 Serial connector pinout

Table 3-2 shows the signal assignment for the connector.

Table 3-2 Serial connector signal assignment

Pin

J18

Type

Description

 

 

 

 

1

SER_DCD

Input

Data carrier detect

 

 

 

 

2

SER_RXD

Input

Receive data

 

 

 

 

3

SER_TXD

Output

Transmit data

 

 

 

 

4

SER_DTR

Output

Data terminal ready

 

 

 

 

5

SER_GND

Input

ground

 

 

 

 

6

SER_DSR

Input

Data set ready

 

 

 

 

7

SER_RTS

Output

Ready to send

 

 

 

 

8

SER_CTS

Input

Clear to send

 

 

 

 

9

SER_RI

Input

Ring indicator

 

 

 

 

Note

The serial interfaces signals operate at RS232 signal levels.

Serial port functionality corresponds to the DTE configuration.

3-4

Copyright © 2001-2003. All rights reserved.

ARM DUI 0163B

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Arm Enterprises IM-AD1 manual Serial connector pinout, Serial connector signal assignment Pin J18 Type Description