From mboxrd@z Thu Jan 1 00:00:00 1970 From: Jamie Guinan To: ecos-discuss@sourceware.cygnus.com Cc: Witek Subject: [ECOS] Transceiver required for SMC2 on MPC821? Date: Tue, 19 Oct 1999 19:28:00 -0000 Message-id: X-SW-Source: 1999-10/msg00067.html 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.