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What's ETH_PPS_OUT in STM32F4x9 MAC.

tonyyu
Associate II
Posted on September 12, 2013 at 21:48

In ethernet MAC block, Port PB5 is assigned as ETH_PPS_OUT. I searched for a while and can find the usage of it. Is it MII_TX_ER?

Sink.
2 REPLIES 2
Posted on September 12, 2013 at 22:11

It's a timing signal PPS (Pulse Per Second) and part of the

http://en.wikipedia.org/wiki/Precision_Time_Protocol

support.

It consequently has no relationship to the PHY

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afergus
Associate
Posted on April 02, 2015 at 22:37