tse 10/100 small MAC mii to rmii PHY

Hi everyone!

I use a custom altera board (cyclone III) and a 10/100 phy with rmii (the hardware team didn't connect signals for mii).

I use the TSE MAC as a 10/100 small MAC and its connection to the phy shall be mii!

I know that mii transmits by every (25MHz) rising edge the nibble.

rmii transmits by every 50MHz rising edge the half of the nibble.

so a mii_to_rmii converter only changes from "single data rate" to "double data rate" - am I right?

what should I do with the mii signals (tx_en, tx_err, rx_en, rx_err) and the rmii signals (CRS_DV, ...).

has anyone already worked on such a converter, and can give me some hints!

BTW I want to write it in vhdl

thank you in advance - have a nice day !!!

Joerg