Serial Port Interface Connectors (Cn10, Cn12, Cn13) - AXIOMTEK SBC84620 Series User Manual

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SBC84620 AMD Geode GX3 All-in-One Capa Board User's Manual
2.4.12 Serial Port Interface Connectors (CN10, CN12,
CN13)
The board has four onboard serial ports, COM2~COM4 (RS-232) and
COM1 (RS-232/422/485). They are jumper selectable with auto flow
control features. All ports supply +5V power capability on DCD, and
+12V on RI (excluding 5V), depending on jumper setting.
2.4.12.1 COM1 Port Connector (CN13)
The COM 1 Port connector CN13 is a standard DB-9 connector.
Pin
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 RI, Ring indicator
2.4.12.2 COM3 Port Connector (CN12)
Pin Signal
1 Data Carrier Detect (DCD)
3 Receive Data (RXD)
5 Transmit Data (TXD)
7 Data Terminal Ready (DTR)
9 Ground (GND)
CN12
28
Signal
Pin
2 Data Set Ready (DSR)
4 Request to Send (RTS)
6 Clear to Send (CTS)
8 Ring Indicator (RI)
10 NC
CN13
Signal
Jumpers and Connectors