D R A F T — F O R I N
T E R N A L U S E O N L Y
35
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User Guide
CP3010-SA
With the GPIO_CFG0 signal on the rear I/O module an active COMB or GPIO interface can be selected.
Note:
The default value is 1 if pin D4 is not connected (pull-up resistor to 3.3V on CP3010-SA).
If the pin is connected, the default value depends on the rear I/O module. If the pin is driv-
en by the rear I/O module, it must be considered that the CP3010-SA tolerates only 3.3 V
signaling on this input.
2.7.9.4 Rear I/O Pin Description
Serial Ports
The CP3010-SA provides two serial ports, COMA and COMB, both available on the rear I/O CompactPCI
connector J2.
VGAx
VGA signal
RIOx/VI/O
Power supply signal
PWRx
Power management signal
RSV
Reserved
GND
Ground signal
NC
Not connected
Table 16: GPIO Signal Description
GPIO SIGNAL
DESCRIPTION
GPIO_CFG0
0 = GPIO
1 = COMB
Table 17: COMA and COMB Signal Description
PIN on J2
SIGNAL
FUNCTION
DRIVEN BY
SIGNALING VOLTAGE
A17
COMA_TXD
TXD serial port (COMA)
CP3010-SA
LVTTL (3.3V)
A18
COMA_RXD
RXD serial port (COMA)
Rear I/O module
LVTTL (3.3V)
E18
COMA_CTS#
CTS signal serial port (COMA)
Rear I/O module
LVTTL (3.3V)
B16
COMA_RTS#
RTS signal serial port (COMA)
CP3010-SA
LVTTL (3.3V)
A16
COMA_DSR#
DSR signal serial port (COMA)
Rear I/O module
LVTTL (3.3V)
B18
COMA_DCD#
DCD signal serial port (COMA)
Rear I/O module
LVTTL (3.3V)
C18
COMA_DTR#
DTR signal serial port (COMA)
CP3010-SA
LVTTL (3.3V)
E16
COMA_RI#
RI signal serial port (COMA)
Rear I/O module
LVTTL (3.3V)
B10
COMB_TXD
TXD serial port (COMB)
CP3010-SA
LVTTL (3.3V)
B17
COMB_RXD
RXD serial port (COMB)
Rear I/O module
LVTTL (3.3V)
D18
COMB_CTS#
CTS signal serial port (COMB)
Rear I/O module
LVTTL (3.3V)
C14
COMB_RTS#
RTS signal serial port (COMB)
CP3010-SA
LVTTL (3.3V)
B7
COMB_DSR#
DSR signal serial port (COMB)
Rear I/O module
LVTTL (3.3V)
C11
COMB_DCD#
DCD signal serial port (COMB)
Rear I/O module
LVTTL (3.3V)
D10
COMB_DTR#
DTR signal serial port (COMB)
CP3010-SA
LVTTL (3.3V)
C13
COMB_RI#
RI signal serial port (COMB)
Rear I/O module
LVTTL (3.3V)
Table 15: CompactPCI Rear I/O Connector J3 Signals (Continued)
SIGNAL
DESCRIPTION