Rosch Computer EMB-M2, User Manual

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24 EMB-M2 User`s Manual
COM3, COM5, COM6 Serial Ports
COM3, COM5, COM6, a 10-pin header connector, is the onboard
COM3, COM5, COM6 serial port. The following table shows its pin
assignments.
Pin
#
RS232 Mode
Signal Name
1 DCD, Data carrier detect
2 RXD, Receive data
3 TXD, Transmit data
4 DTR, Data terminal ready
5 GND, ground
6 DSR, Data set ready
7 RTS, Request to send
8 CTS, Clear to send
9 +5V or +12V
10 NC
Speaker-R, Speaker-L Connectors
There are two amplified Audio outputs on board to drive loudspeaker
directly in two separated male headers (JST): one for left audio
channel and one for right audio channel.
Pin # Signal Name
1 SPEAKER R/L-
2 SPEAKER R/L+