4.7Serial Ports
The system provides three high speed NS16C550 compatible UARTS with Read/Receive 16 byte FIFO. Four com ports are in IO connector.
•COM1: CN25
•COM2: CN26
PIN | Description |
|
|
1 | DATA CARRIER DETECT (DCD) |
2 | RECEIVE DATA (RXD) |
3 | TRANSMIT DATA (TXD) |
4 | DATA TERMINAL READY (DTR) |
5 | GROUND |
6 | DATA SET READY (DSR) |
7 | REQUEST TO SEND (RTS) |
8 | CLEAR TO SEND (CTS) |
9 | RING INDICATOR (RI) |
•COM2: CN27 pin header 2.0mm
PIN | Description |
|
|
1 | DATA CARRIER DETECT (DCD) |
2 | RECEIVE DATA (RXD) |
3 | TRANSMIT DATA (TXD) |
4 | DATA TERMINAL READY (DTR) |
5 | GROUND |
6 | DATA SET READY (DSR) |
7 | REQUEST TO SEND (RTS) |
8 | CLEAR TO SEND (CTS) |
9 | RING INDICATOR (RI) |
10 | N/C |
11 | +5V |
12 | N/C |
13 | +12V |
14 | GROUND |
•COM3: CN24 for Card Reader.
PIN | Description |
1 | GROUND |
2 | +5V |
3 | RXD3 |
4 | TXD3 |
5 | KB_DATA_OUT |
6 | KB_CLK_OUT |
7 | KB_DATA_IN |
8 | KB_CLK_IN |
9 | RI3 |
10 | DTR3 |
11 | CTS3 |
12 | RTS3 |
13 | DSR3 |
14 | DCD3 |
15 | KB_EN |
4.8Power Connector
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