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LS1021A ethernet interfaces (devel is the detail)

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LS1021A ethernet interfaces (devel is the detail)

‎10-11-2016 03:23 AM
460 Views
ljbrits
Contributor I

According to the LS1021A datasheet and ref manual summary part, it is implied that all Ethernet controllers (1-3) support the RMII interface. But when you dig deeper into the register settings on P260-261 it seems that the LS1021 only supports 1x RMII port (the other two is MII) !? Is this correct?

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1 Reply

‎10-11-2016 09:08 AM
384 Views
bpe
NXP Employee
NXP Employee

Yes, only eTSEC3 supports RMII on LS1021A. Note also that  eTSEC1/eTSEC2  MII is mutually exclusive with any eTSEC3 parallel interface due to signal multiplexing. See LS1021ARM, Table 3-13 for details.


Have a great day,
Platon

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