TM4C1294NCPDT: TM4C1294 Ethernet PHY RO registor

Hi Tsai-san.

Thank you to your information.

I understood that EPHYBISTCR bit6(TXMIILB) is RW Registor.

Additional, I want to check.

To set MII Loopback, Need to this?

1. MAC Configuration : EMACCCFG BIT17(LOOPBM) sets 1.

2. PHY Configuration : EPHYBISTCR BIT6(TXMIILB) sets 1.

3.PHY Configuration : EPHYBMCR BIT14(MIILOOPBK) sets 1.

thanks,

GR

Hi GR-san,

  We don't have an example for MII interface to an external PHY and neither MII loopback testing. But if you get it to work using the above settings please let us know. I'm sure it will benefit others in the community. 

Hi Tsai-san

I checked internal PHY using TM4C1294 EVM.

For MII Loop back.Need to

1. MAC Configuration : EMACCCFG BIT17(LOOPBM) sets 1.

2.PHY Configuration : EPHYBMCR BIT14(MIILOOPBK) sets 1.

I checked by see EPHYSTS(address 0x010, MR16) BIT3(MIILB) that is MII Loopback Status.

I think EPHYBISTCR BIT6(TXMIILB)  used for BIST operation.

thanks,

GR

Hi GR-san,

  Thank you for your information.