C2K User’s Guide
6-5
Transition Module C2K-TM
CompactPCI J4
The cPCI_J4 connector provides connections for the following I/O ports:
• RS-232 serial ports COM3 and COM4
• RS-422 serial ports COM1 through COM4
• RS-422/485 serial ports COM5 through COM8
• Gigabit Ethernet port (ETH2)
• GPIO ports (GPIO_0–GPIO_3).
Pin
A
B
C
D
E
F
J4-25
J4-24
J4-23
J4-22
J4-21
J4-20
J4-19
J4-18
J4-17
J4-16
J4-15
J4-12–14
J4-11
J4-10
J4-9
J4-8
J4-7
J4-6
J4-5
J1-4
J4-3
J4-2
J4-1
Table 6-2
cPCI connector J4 pin assignments
n/c
n/c
n/c
n/c
n/c
GND
GPIO_0
GPIO_1
GPIO_2
GPIO_3
n/c
GND
n/c
n/c
n/c
n/c
n/c
GND
COM8_RXC-
n/c
n/c
COM1_RXC-
COM2_RXC-
GND
C
n/c
n/c
C
C
GND
COM8_TXC-
COM3_232_RX n/c
COM1_TXC-
COM2_TXC-
GND
C
COM3_232_TX n/c
C
C
GND
COM8_RXD-
n/c
n/c
COM1_RXD-
COM2_RXD-
GND
C
n/c
n/c
C
C
GND
COM8_TXD-
COM4_232_RX n/c
COM1_TXD-
COM2_TXD-
GND
C
COM4_232_TX n/c
C
C
GND
COM3_RXC-
COM4_RXC-
COM5_RXC-
COM6_RXC-
COM7_RXC-
GND
C
C
C
C
C
GND
COM3_TXC-
COM4_TXC-
COM5_TXC-
COM6_TXC-
COM7_TXC-
GND
C
C
C
C
C
GND
COM3_RXD-
COM4_RXD-
COM5_RXD-
COM6_RXD-
COM7_RXD-
GND
C
C
C
C
C
GND
COM3_TXD-
COM4_TXD-
COM5_TXD-
COM6_TXD-
COM7_TXD-
GND
C
C
C
C
C
GND
n/c
n/c
n/c
n/c
n/c
GND
ETH2_DA-
GND
ETH2_DC-
GND
ETH2_DB-
GND
ETH2_DD-
GND
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