* [U-Boot-Users] transmission just works in loopback mode
@ 2006-02-23 18:39 Josef Angermeier
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From: Josef Angermeier @ 2006-02-23 18:39 UTC (permalink / raw)
To: u-boot
Dear u-boot users,
i used the MPC875 FEC internal loopback mode and the external
transceiver-loopback mode. In both cases i could send *and* receive the
data.
But when using no loopback at all, but a (working) crossover cable to
connect the board to a second PC (see below), no packets get received
there. Where could the failure be ?
MPC875 <-> transceiver(LTX970) <-> RJ45-connector <-> crossover
-cable <-> second PC with RJ54-connector
my custom board contains a MPC875, whose FEC is connected to a LTX970
transceiver chip, which uses a twisted pair cable interface.
best regards
Josef
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2006-02-23 18:39 [U-Boot-Users] transmission just works in loopback mode Josef Angermeier
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