Cables
Pinouts
for
Series 900 Cables
The
pinouts
of
the
RJ45
connector
which
provides
an
async EIA-232 serial
interface
which
is
used
on
the
MVME332XT,
the
I/0
Distribution
board,
and
various
other
products.
This
pinout
allows
any
Motorola
RJ45
port
to
be
connected to
any
other
Motorola RJ45
port
using
a
standard
cross-over cable
described below. By
always
using
this
pinout
and
a cross-over cable,
we
eliminate
DCE/DTE
jumpering
on
the
module,
and
are able to
use
the
same
cable for loopback
between
ports
for
running
certain diagnostics (see
diagnostics
manuals
for details).
Table B-2. EIA-232 RJ45 Pinout Description
for
MVME332XT and 1/0 Distribution Board
RJ45
Pin
EIA-232
Direction Signal Function
Number
Name
1 DCD
INPUT Signals
module
that
remote device is attached
and
powered
on
2
RTS
OUTPUT Flow control, to enable remote device to
send
data
3 SG
Signal
return
(NOT chassis ground)
4 TXD OUTPUT
Serial
data
out, from
module
to remote device
5 RXD
INPUT
Serial
data
in, from remote device to
module
6 SG Signal return (NOT chassis ground)
7
CTS INPUT Flow control, to enable this
module
to
send
data
on
TXD
8 DTR
OUTPUT Signals remote device
that
this
module
is attached
and
powered
on
Figure B-1. MVME332XT Backpanel
Figure B-2. MVME713n14
110
Backpanel
B-2
Reference
Guide
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