User's Manual

Connectors: Power and Serial Interface
12  Digi Connect Wi-EM 9210 Hardware Reference
Power and Serial Interface
Power and Serial Interface Pin Assignments
Pin Signal Name Description and Notes
1 VCC +3.3 VDC (input only)
2 GND Reference Ground for input power
3 RXD/GPIO-7 Port 1 RXD (input)/GPIO-7
4 TXD/GPIO-6 Port 1 TXD (output)/GPIO-6
5 RTS/GPIO-4/SPI_CLK Port 1 RTS/GPIO-4/SPI clock
6 DTR/GPIO-5 Port 1 DTR (output)/GPIO-5
7 CTS/GPIO-2 Port 1 CTS (input)/GPIO-2
8 DCD/GPIO-1/SPI_EN Port 1 DCD (input)/GPIO-1/SPI enable
9 DSR/GPIO-3 Port 1 DSR (input)/GPIO-3
10 /RST Reset (input)
11 RXD/GPIO-9 Port 2 RXD (input)/GPIO-9
12 TXD/GPIO-8 Port 2 TXD (output)/GPIO-8
pin 1
2
3
4
5
top view
11
7
9
8
10
12
6