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TM4C1292-Emac



Hi All

Can you please help to clarify my below doubts ?

1. If I use RMII mode, the tiva datasheet listed to enable ECEXT and CLKEN bit in the EMACCC register.
I can find CLKEN bit , but ECEXT bit is not listed in the datasheet

2. Tiva datasheet says Select the RMII interface by programming the PINTFS bit field to 0x4 in EMACPC register
but that register is stated as ReadOnly.. What is the bit position of PINTFS

3. EMACPHYREAD & EMACPHYWRITE - These API's can be used to read the External PHY registers also ?
or these API's are meant for only internal PHY inside Tiva


Please help me on the above

Thanks in advance
Krishnan