APE1553-1/2(-DS) Hardware Manual
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2.3.2.4 RS232 connection
For debugging purposes and board maintenance a RS232 interface is provided. To
establish a RS232 communication link between the APE1553 and a PC – COM-Port
the RS232-TXD/-RXD signals from the 26-pin high density DSUB-Connector have to be
connected with the RS232-TXD/-RXD signals from the PC via a NULL-Modem
connection.
PC RS232 Connector (COM1, COM2, ...)
Module Connector
Signal
DSUB9
HD-DSUB25
TXD
3
2
RXD
2
3
GND
5
7
Signal
HD-DSUB26
RXD
1
TXD
10
GND
17
Table 2.3.2.4-1: RS232 connection
