Gpio Signal Description - Kontron CP308 User Manual

Functional Description
Warning!
The RIO_XXX signals are power supply OUTPUTS to supply the rear I/O mod-
ule with power. These pins MUST NOT be connected to any other power
source, either within the backplane itself or within a rear I/O module.
Failure to comply with the above will result in damage to your board.
Note ...
The signal on the GPIO configuration pin D4 tolerates only 3.3 V signalling and
has an internal pull-up resistor to 3.3V.
The pins for the interfaces COM1 and GPIO/COM2 (pins A18, A17, A16, B18,
B17, B16, B10, B7, C18, C14, C13, C11, D18, D10, E18, and E16) tolerate
only 3.3 V signaling and their inputs have internal pull-up resistors.
Legend for Table 2-17:
SATAx Serial ATA port
lPx Gigabit Ethernet port
USBx USB interface and power
VGAx VGA signals
COM1x COM1 port
GPIOx COM2 port or GPIO
PWRx Power Management signals
5V/3.3V Power
GPIO_CFG0 GPIO configuration (GPIO or COM2)
With the GPIO_CFG0 signal on the rear I/O module an active COM2 or GPIO interface can be
selected.
Table 2-18: GPIO Signal Description
GPIO SIGNAL
GPIO_CFG0 0 = GPIO
1 = COM2
Note ...
The default value is 1 if the pin is not connected (pull-up resistor on CP308). If
the pin is connected, the default value depends on the rear I/O module.
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DESCRIPTION
CP308
ID 1027-4487, Rev. 3.0