8
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2.5 Serial Interface
801 has 4 serial ports,COM1 is serial1 6550A
,
COM2-4 is serial TI16750 .
No
号
(
P1
)
Picture
1
UART1 TX
2
UART1 RX
3
UART1 A
4
UART1 B
5
GND
6
UART2 TX
7
UART2 RX
8
UART2 A
9
UART2 B
1
0
GND
No
(
P2
)
1
UART3 TX
2
UART3 RX
3
UART3 A
4
UART3 B
5
GND
6
UART4 TX
7
UART4 RX
8
UART4 A
9
UART4 B
1
0
GND