User Manual

Functional Description 23
aTCA-6155
Serial Port
One PC-compatible serial RS-232, RJ45 port is provided on the
front panel with DIP switches SWX1 and SWX2 on the board that
are used to set the COM port function to RS-232 mode or IPMC
debug mode. A complete set of handshaking and modem control
signals are supported, with data transfer rates up to 115.2 kB/sec.
The Front Panel RJ45 COM connector CN8 pin-assignment is
listed below.
COM Serial Port Connector (RJ45)
Table 3-3: COM1 Serial Port Connector Pin Definition
When the Front Panel RJ45 COM connector is set to IPMC debug
mode, the pin assignment of the RJ45 connector is as below.
Table 3-4: IPMC Debug Port Connector Pin Definition
See “COM Mode Switch Settings (SWX1 and SWX2)” on page 26
for DIP switch settings.
Pin # Signal Function
1 DCD# Data Carrier Detect
2 RTS# Request to Send
3 DSR# Data Set Ready
4 TXD Transmit Data
5 RXD Receive Data
6 GND Ground
7 CTS# Clear to Send
8 DTR# Data Terminal Ready
Pin # Signal Function
1 NC Not connected
2 NC Not connected
3 NC Not connected
4 DBG_TX IPMC Transmit Data
5 DBG_RX IPMC Receive Data
6 GND Ground
7 NC Not connected
8 NC Not connected