LS1021 Ethernet RMII

[deepaknaiknavar]

Hello,

We were trying to communicate LS1021 with TI controller TMS570 over RMII without using a Phy Chip. The TI controller TMS570 datasheet has provided a single reference clock input in RMII mode, whereas the LS1021 controller has 2 clocks for TX and RX in the RMII mode.

How can we connect these two controllers with different number of clocks? Is it a feasible option to these controllers over phyless RMII?

Thanks in Advance!!

[ufedor]

> the LS1021 controller has 2 clocks for TX and RX in the RMII mode.

What do you mean?

Please refer to the QorIQ LS1021A Reference Manual, Figure 20-3. eTSEC-RMII connection.