5-4
Computer Group Literature Center Web Site
Connector Pin Assignments
5
CompactPCI Rear I/O Connectors (J3, J4, and J5)
Table 5-3. CPN5365 Rear I/O Connector (J3)
Pin F
E
D
C
B
A
19
GND
No connect
USB0-
USB0+
USB1-
USB1+
18
GND
No connect
COM2_RI
COM2_DTR
COM1_RI
COM1_DTR
17
GND
No connect
COM2_DCD
COM2_DSR
COM1_DCD
COM1_DSR
16
GND
No connect
COM2_TxD
COM2_CTS
COM1_TxD
COM1_CTS
15
GND
No connect
COM2_RxD
COM2_RTS
COM1_RxD
COM1_RTS
14
GND
+5V
+5V
+3.3V
+3.3V
+3.3V
13
GND
PMC2IO1
PMC2IO2
PMC2IO3
PMC2IO4
PMC2IO5
12
GND
PMC2IO6
PMC2IO7
PMC2IO8
PMC2IO9
PMC2IO10
11
GND
PMC2IO11
PMC2IO12
PMC2IO13
PMC2IO14
PMC2IO15
10
GND
PMC2IO16
PMC2IO17
PMC2IO18
PMC2IO19
PMC2IO20
9
GND
PMC2IO21
PMC2IO22
PMC2IO23
PMC2IO24
PMC2IO25
8
GND
PMC2IO26
PMC2IO27
PMC2IO28
PMC2IO29
PMC2IO30
7
GND
PMC2IO31
PMC2IO32
PMC2IO33
PMC2IO34
PMC2IO35
6
GND
PMC2IO36
PMC2IO37
PMC2IO38
PMC2IO39
PMC2IO40
5
GND
PMC2IO41
PMC2IO42
PMC2IO43
PMC2IO44
PMC2IO45
4
GND
PMC2IO46
PMC2IO47
PMC2IO48
PMC2IO49
PMC2IO50
3
GND
PMC2IO51
PMC2IO52
PMC2IO53
PMC2IO54
PMC2IO55
2
GND
PMC2IO56
PMC2IO57
PMC2IO58
PMC2IO59
PMC2IO60
1
GND
PMC2IO61
PMC2IO62
PMC2IO63
PMC2IO64
VIO
Table 5-4. Signal Descriptions for Backplane Connector (J3)
Signal
Signal Mnemonic
Signal Description
Universal
Serial Bus
(Channel 0 and
Channel 1)
USB0+
(+) signal of differential data pair for USB channel 0
USB0-
(-) signal of differential data pair for USB channel 0
USB1+
(+) signal of differential data pair for USB channel 1
USB1-
(-) signal of differential data pair for USB channel 1