Specifications

Appendix E: Rear Transition module (RTM)
91
Backplane J3
The J3 connector specified in CompactPCI is a female 2mm-pitch 6 column by 19
row right angle Hard Metric (HM) connector. The signals on this connector are
proprietary and include the USB port, COM 1 and COM 2 ports, and PMC socket
B I/O signals. The next table shows this connector’s pinout.
Table E-1. Backplane connector J3
Pin A B C D E F
1 GND PMCBIO64 PMCBIO63 PMCBIO62 PMCBIO61 GND
2 PMCBIO60 PMCBIO59 PMCBIO58 PMCBIO57 PMCBIO56 GND
3 PMCBIO55 PMCBIO54 PMCBIO53 PMCBIO52 PMCBIO51 GND
4 PMCBIO50 PMCBIO49 PMCBIO48 PMCBIO47 PMCBIO46 GND
5 PMCBIO45 PMCBIO44 PMCBIO43 PMCBIO42 PMCBIO41 GND
6 PMCBIO40 PMCBIO39 PMCBIO38 PMCBIO37 PMCBIO36 GND
7 PMCBIO35 PMCBIO34 PMCBIO33 PMCBIO32 PMCBIO31 GND
8 PMCBIO30 PMCBIO29 PMCBIO28 PMCBIO27 PMCBIO26 GND
9 PMCBIO25 PMCBIO24 PMCBIO23 PMCBIO22 PMCBIO21 GND
10 PMCBIO20 PMCBIO19 PMCBIO18 PMCBIO17 PMCBIO16 GND
11 PMCBIO15 PMCBIO14 PMCBIO13 PMCBIO12 PMCBIO11 GND
12 PMCBIO10 PMCBIO9 PMCBIO8 PMCBIO7 PMCBIO6 GND
13 PMCBIO5 PMCBIO4 PMCBIO3 PMCBIO2 PMCBIO1 GND
14 +3.3V +3.3V +3.3V +5V +5V GND
15 ~COM1_RTS COM1_RXD ~COM2_RTS COM2_RXD NC GND
16 ~COM1_CTS COM1_TXD ~COM2_CTS COM2_TXD NC GND
17 ~COM1_DSR ~COM1_DCD ~COM2_DSR ~COM2_DCD NC GND
18 ~COM1_DTRCOM1_RI ~COM2_DTR COM2_RI NC GND
19 USB1_DAT+ USB1_DAT– USB0_DAT+ USB0_DAT– NC GND