4-22
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Connector Pin Assignments
4
CompactPCI Connectors (J3/J4/J5)
Connector J3 is a 95-pin 2mm hard metric type B connector which routes
I/O signals for PMC I/O and serial channels. The pinout for this connector
has been described previously in
Table 4-1
.
Connector J4 is a 110-pin 2mm hard metric type A connector. This
connector is placed on the board for alignment only. The keying tabs on
the type A connector assist with alignment of pins in the backplane
connector during insertion of the boards. No signals are connected to J4
except the row F ground pins.
Connector J5 is a 110-pin 2mm hard metric type B connector which routes
I/O signals for IDE, keyboard, mouse, USB and printer ports. The pinout
for this connector has been previously described in
Table 4-3
.
Serial Ports 1 and 2 (J10/J11) (TMCP700 I/O Mode)
The MCP750 provides both asynchronous (ports 1 and 2) and
synchronous/asynchronous (ports 3 and 4) serial connections. The
asynchronous interface is implemented with a pair of RJ45 connectors
(
COM1
and
COM2
) located on the TMCP700 transition module. The signals
for COM1 are also routed to J15 on the MCP750. A terminal may be
connected to J11 or J15 on the MCP750, but not both at the same time. The
pin assignments are listed in the following table.
Table 4-15. Serial Connections - Ports 1 and 2 (J10 and J11) (TMCP700 )
1
DCDn
5
RXDn
2
RTSn
6
GND
3
GND
7
CTSn
4
TXDn
8
DTRn