5 serial ports, Serial ports, Serial port connector j11 (coma) pinout – Kontron AM4024e User Manual
Page 29: Serial port connector j11 (coma)
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User Guide
AM4024(E)
Figure 8: Adapter for Mini USB Type A to USB Type A Connector
2.7.5 Serial Ports
The AM4024(E) supports one serial port, COMA, fully compatible with the 16550 UART controller. COMA
is implemented as a serial RS-232 interface available on a 5-pin USB Micro-AB connector, J11, on the
front panel.
The COMA interface includes receive and transmit signals as well as additional signals for handshaking
mode. Data transfer rates up to 115.2 kB/s are supported.
The COMA interface can be routed to the AMC port 15 in the Extended Options Region of the AMC Card-
edge Connector as TTL 3.3 V signal level. In this event, the COMA port includes only receive and trans-
mit signals.
The following figure and table provide pinout information on the serial port connector J11.
To connect standard serial devices to the AM4024(E), a specially designed serial adapter from Kontron
is required. For further technical or ordering information on this adapter, please contact Kontron.
Figure 9: Serial Port Con. J11 (COMA)
5
1
Table 11: Serial Port Con. J11 (COMA) Pinout
PIN
SIGNAL
FUNCTION
I/O
1
RTS#
Request to send
O
2
RXD
Receive data
I
3
TXD
Transmit data
O
4
CTS#
Clear to send
I
5
GND
Signal ground
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