FPGA Intellectual Property
PCI Express*, Networking and Connectivity, Memory Interfaces, DSP IP, and Video IP
6542 Discussions

tse 10/100 small MAC mii to rmii PHY

Altera_Forum
Honored Contributor II
1,078 Views

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
0 Kudos
0 Replies
Reply