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Altera_Forum
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21 years ago

Another Lan91C111 LWIP problem!

I tried running the Nios Stratix DevKit on a 10BaseT link (rather than 100BaseT), and was surprised when everything fell apart. Ethereal shows that certain longish packets would switch half-way...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
21 years ago

Great catch! Maybe my comms will finally work right.

The datasheet is contradictory on this point. Is the TX_EMPTY bit latched high only once when the empty condition first occurs, or continously as long as the empty condition exists? The paragraph manages to say both things. Your fix suggests it is the latter case. If so, the ack following the polling seems to be useless.