Does MII loopback work in RMII mode in TLK110?

Harry Song

Other Parts Discussed in Thread: TLK110

I used the TLK110 in RMII mode and set bit 14 of BMCR to 1(MII loopback mode), with scope I can see signal on TXEN, TXD1, TXD0, but nothing on the RXD1,RXD0 and CRS_DV, does loopback work only in MII mode, not RMII? thanks

over 13 years ago

0 Yaniv Ben-Margi over 13 years ago

TI__Prodigy 395 points

Hi Harry,

MII Loop is not supported for RMII Mode in TLK110.

however, you can apply PCSLoop, using register 0x16 (BISCR) bit [0] for 10BT or bit [1] for 100BT.

MII Loop for RMII will be supported in future TLK devices.

Best Regrds,

Yaniv

0 Harry Song over 13 years ago in reply to Yaniv Ben-Margi

Intellectual 360 points

Thanks for quick response.

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Does MII loopback work in RMII mode in TLK110?