From: Jamie Guinan <guinan@bluebutton.com>
To: ecos-discuss@sourceware.cygnus.com
Cc: Witek <witek@ultranet.com>
Subject: [ECOS] Transceiver required for SMC2 on MPC821?
Date: Tue, 19 Oct 1999 19:28:00 -0000 [thread overview]
Message-ID: <Pine.LNX.4.10.9910192214380.6893-100000@gemini.home.net> (raw)
Hi all,
I'm trying to get output from the SMC2 port on my
MBX board (MPC821).
Is it necessary to put a transceiver between the SMC2
pins and the serial cable if you want to talk to an
RS-232 port at the other end? The SMC2 Tx/Rx, and GND
pins are available at header J1, but I had no
luck wiring them up to a serial port. Maybe the
821 can't drive the RS-232 voltages?
(This not eCos-specific, but I'm using eCos and there
seem to be other MBX users around here so I figured
I'd ask anyway.)
-Jamie
p.s. Hugo helped get the SMC2 configuration working
a few weeks ago - that much appears to be working.
Thanks, H.
next reply other threads:[~1999-10-19 19:28 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
1999-10-19 19:28 Jamie Guinan [this message]
1999-10-20 8:08 ` Morgan Jones
1999-10-21 14:07 ` [ECOS] " Jamie Guinan
1999-10-19 20:26 [ECOS] " Stephen Worthington
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