TSE PCS (without MAC)

[Altera_Forum]

Hallo, 

 I have a question concerning the Altera TSE Megafunction and a Marvell QPHY. On my Board I have a Stratix IV FPGA. (I want to built a SGMII to RGMII Bridge by using the TSE Megafunction (PCS only), a ALTLVDS Receiver and a ALTLVDS Transmitter with external PLL)  By following the Signal via LeCroy there is every time the same bits K28.5/0a/98 or K28.5 /4a/98  that means i have no link, does the auto_neg not work?  thanks in before

[Altera_Forum]

Well the K28.5 character is the IDLE/Alignment character. I think that merely means that the PHY is not attempting to provide any data to the MAC. Have you got the MDIO interface up and running yet? 

 Jake

[Altera_Forum]

i don't think that the mdio is running, 

does this mean the phy is not configured the right way?

[Altera_Forum]

The very first step for you is to make sure the MDIO interface is working. Through the MDIO interface, you can query the state of the PHY. 

 Jake

[Altera_Forum]

thanks, 

 the MDIO is running, i think it is a problem with the Auto Negotiation between the Marvell PHY and the PCS, does anybody has an idea?  (For completeness: The Pattern comes the following way K28.5, b5, 01, 98 then K28.5, 42, 01, 98 and so on)  regards

[Altera_Forum]

Hallo ;) 

 i know now that the problem is the auto_neg with marvell phy and pcs. Now i try to configure the PCS registers and also the Phy registers so that thy can communicate, but until today i didn't find out which Registers i have to change, all i tried didn't work.  Did anybody has experience or an idea how to deal with the PCS Module and an external phy?