-4-
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4.4 USB1
:
USB 2.0 Header
Pin
Signal Description
1
USB_VCC
2
USB2_D-
3
4
GND
5
USB_VCC
6
USB2_D-
7
8
GND
9
UART0_RXD
10
UART0_TXD
4.5
COM1
:
RS-232/422/485 DB9 Connector
Pin
Signal Description
1
DCDA / RS422TX- / RS485-
2
RXA / / RS485+
3
TXA /
4
DTRA / RS422RX-
5
GND
6
DSRA
7
RTSA
8
CTSA
9
RIA