User's Manual

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About the Development Board
Note: These switches control where the development board routes a signal. They do not
reconfigure the Wi-EM 9210 processor. Software should be configured to track
with switch settings. See "GPIO" on page 33 for more information
.
GPIO Switch Bank 1 (SW1) and 2 (SW2)
GPIO Switch Bank 1 and Switch Bank 2, labeled SW1 and SW2, are two sets of five slide
switches that set GPIO inputs to logic levels of high (switch to left) or low (switch to
right).
If the GPIO port is configured as an output, then the switch should always be to the left. If
there is an external device connected to P3, the switch should always be set to the left.
Each GPIO port can be used independently.
Notes:
 These switches do not determine whether the GPIO is an input or output. That
is determined by the module software.
 If GPIO is set to an output by software, switches must be set to the left (high).
 These switches are used in conjunction with SW3 and SW4.
GPIO Switch Banks 3 and 4 Settings
Switch
Bank
Switch
Number
Left
Position
Right
Position
SW3
1 DCD GPIO-1
2 CTS GPIO-2
3 DSR GPIO-3
4 RTS GPIO-4
5 DTR GPIO-5
SW4
6 TXD-1 GPIO-6
7 RXD-1 GPIO-7
8 TXD-2 GPIO-8
9 RXD-2 GPIO-9
10 Not connected Not connected