Functional Description
CP3002
Page 2 - 24
ID 1042-9252, Rev. 2.0
P R E L I M I N A R Y
With the GPIO_CFG0 signal on the rear I/O module an active COMB or GPIO interface can be
selected.
Table 2-16: Rear I/O Signal Description
SIGNAL
DESCRIPTION
COMAx
COMA port LVTTL (3.3V)
COMBx
COMB port LVTTL (3.3V)
GPI/GPO
General purpose input / general purpose output signal
GPIO_CFG0
GPIO or COMB configuration
lPx
Gigabit Ethernet copper port
SATAx
Serial ATA port
USBx
USB interface and power
VGAx
VGA signal
RIOx/VI/O
Power supply signal
PWRx
Power management signal
RSV
Reserved
GND
Ground signal
NC
Not connected
Table 2-17: GPIO Signal Description
GPIO SIGNAL
DESCRIPTION
GPIO_CFG0
0 = GPIO
1 = COMB
Note ...
The default value is 1 if pin D4 is not connected (pull-up resistor to 3.3V on
CP3002). If the pin is connected, the default value depends on the rear I/O
module. If the pin is driven by the rear I/O module, it must be considered that
the CP3002 tolerates only 3.3 V signaling on this input.
