User's Manual

ABOUT THE DEVELOPMENT BOARD
Switches and buttons
32 ConnectCore 9c/Wi-9C Hardware Reference, Rev. B 01/2007
3
Serial Port B
switch, SW2
The Serial Port B switch is a 2-position DIP switch that enables or disables the serial
port B transceiver.
User pushbuttons,
SW3 and SW4
The development board has two user pushbuttons — SW3 and SW4 — that allow you
to interact with applications running on the ConnectCore 9C or Wi-9C module. The
application detects the button push through the associated GPIO.
SW3 and SW4 pin
assignment
Power switch,
SW5
SW5 is the main power switch. ON/OFF positions are marked on the development
board.
Hardware Reset
button, SW6
Press the hardware reset (push) button to reset the whole platform (module and
development board).
VGA (enable)
switch, SW7
The VGA (enable) switch is a 2-position DIP switch that determines whether GPIO40
and GPIO41 are connected to the VGA controller or available for serial port C (see
"Serial port C header connector, P10," beginning on page 37). The switch position
3 Determines whether the interface is configured for 4-wire or 2-wire EIA-485:
ON — 2-wire EIA-485 mode
OFF — 4-wire EIA-485 mode
OFF
4 Enables/disables termination for the EIA-485/EIA-422 interface:
ON — Termination enabled
OFF — Termination disabled
OFF
Position Description Default
position
Position Setting Default position
1 Enable/disable auto power down
ON — Not supported
OFF — Disabled
OFF
2 Enable/disable EIA-232 transceiver
ON — Enabled
OFF — Disabled
ON
Signal name Switch GPIO
USER_PUSH_BUTTON_1 SW3 GPIO72
USER_PUSH_BUTTON_2 SW4 GPIO69