Serial Port 4 I/O Path Selection (J9) - Motorola MVME1603 Installation And Use Manual

Hardware Preparation and Installation
1
To complete the configuration of the clock lines, you must also set
serial port 4 clock configuration header J15 on the MVME712M
transition module (described later in this chapter). For details on
the configuration of that header, refer to the MVME712M Transition
Module section or to the user's manual for the MVME712M (part
number MVME712M).

Serial Port 4 I/O Path Selection (J9)

On the MVME1600-011, serial port 4's I/O signals are routed to
backplane connector P2 and to front panel connector J3. Header J9
determines the state of the DSR, RI, and TM signals on serial port 4.
With a jumper installed on J9, DSR, RI, and TM come from the front
panel.
With the jumper removed, P2 I/O is selected. The DSR, RI, and TM
signals are not supported in this case, so DSR is held true while RI
and TM are held false.
J9 J9
2 1 2 1
Jumper On = Front Panel I/O Jumper Off = P2 I/O (factory configuration)
DSR, RI, and TM from front panel DSR to 8536 device held true
to 8536 device RI and TM to 8536 device held false
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