VDX104 Manual - Tri-M Systems Inc.

18-Nov-2010
VDX104 Manual
Port3 Function: can be used as GPIO, SPI and I2C. These features can be combined
Port3 Bit 0 Direction: select if the pin 4 of connector CN17 is set as input or output.
Output: select if the pin is set to 0 or 1 when assigned as output.
feature unavailable when the pin is assigned to the SPI port.
Port3 Bit 1 Direction: select if the pin 3 of connector CN17 is set as input or output.
Output: select if the pin is set to 0 or 1 when assigned as output.
feature unavailable when the pin is assigned to the SPI port.
Port3 Bit 2 Direction: select if the pin 1 of connector CN17 is set as input or output.
Output: select if the pin is set to 0 or 1 when assigned as output.
feature unavailable when the pin is assigned to the SPI port.
Port3 Bit 3 Direction: select if the pin 2 of connector CN17 is set as input or output.
Output: select if the pin is set to 0 or 1 when assigned as output.
feature unavailable when the pin is assigned to the SPI port.
Port3 Bit 4 Direction: select if the pin 2 of connector CN16 is set as input or output.
Output : select if the pin is set to 0 or 1 when assigned as output.
feature unavailable when the pin is assigned to the I 2 C port.
Port3 Bit 5 Direction: select if the pin 3 of connector CN16 is set as input or output.
Output Value: select if the pin is set to 0 or 1 when assigned as output.
feature unavailable when the pin is assigned to the I 2 C port.
Port3 Bit 6 Direction: used to detect if the CPU board is powered through the USB device port.
This setting must be set always as input.
Port3 Bit 7 Direction: used by the BIOS to force the Console Redirection On, even when
disable in the BIOS setting.
This setting must be set always as input.
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