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Added background and setup to add section on RS-422.

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This commit is contained in:
Joel Sherrill
1998-07-18 15:24:14 +00:00
parent f77670be93
commit f7d6e57e09
1 changed files with 21 additions and 11 deletions
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c/src/lib/libbsp/powerpc/dmv177/cable.doc
+21 -11
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@@ -4,11 +4,28 @@
# $Id$
#
DY-4 177 Cable configuration to a PC
====================================
Background
==========
Board's DB-25 PC's DB-9 Color in
Channel A COM1 Shell
All serial cables described in this file were built using RJ-45 ribbon
cables which were plugged into DB-25 or DB-9 adapters wired as described.
Matching the colors of the wires in the shell is the easiest way to
make sure the cable is built properly.
References
==========
- Linux Serial FAQ
- http://ahmed.egypt.com/electronics/serial
- DY-4 Documentation
Front Panel RS-232 Connection to a PC
=====================================
Board's DB-25 PC's DB-9 Color in
Channel A COM1 Shell
============= ============ =========
RX on pin 2 TX on pin 2 Red
TX on pin 3 RX on pin 3 Blue
@@ -17,10 +34,3 @@ DTR on pin 20 DTR on pin 4 Brown
No other signals are used.
References:
- Linux Serial FAQ
- http://ahmed.egypt.com/electronics/serial
- DY-4 Documentation