VIA Technologies AMOS-820 SKU, User Manual

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2.4. CAN/COM2 Port
The integrated 9-pin CAN/COM2 port uses a male DE-9 connector. The CAN bus port supports CAN
protocol specification Version 2.0 B while the COM2 port supports TX/RX. The purpose of the
CAN/COM2 port is to debug only. The pinout of the CAN/COM2 port is shown below.
Figure Figure Figure Figure 9 9 9 9: : : : CAN/COM2 port CAN/COM2 port CAN/COM2 port CAN/COM2 port diagram diagram diagram diagram
Pin
Pin Pin
Pin Signal
Signal Signal
Signal
1 CANH1
2 RX
3 TX
4 CANL2
5 GND
6 CANL1
7 GND
8 CANH2
9 VCC5
Table Table Table Table 2 2 2 2: : : : CAN/COM2 CAN/COM2 CAN/COM2 CAN/COM2 port port port port pinout pinout pinout pinout
Note:
Note: Note:
Note:
Do not directly plug a COM port to the CAN/COM2 port. Please use the COM/CAN conversion cable when
connecting to the CAN/COM2 port.
2.5. COM1 Port
The integrated 9-pin COM port uses a male DE-9 connector. The COM1 port supports the RS-232
standard. The pinout of the COM port is shown below.
Figure Figure Figure Figure 10 10 10 10: : : : COM1 COM1 COM1 COM1 port port port port diagram diagram diagram diagram
Pin
Pin Pin
Pin Signal
Signal Signal
Signal
1 DCD1
2 SIN1(Rx)
3 SOUT1(Tx)
4 DTR1
5 GND
6 DSR1
7 RTS1
8 CTS1
9 RI1
Table Table Table Table 3 3 3 3: : : : COM1 COM1 COM1 COM1 port port port port pinout pinout pinout pinout