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Altera_Forum
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15 years ago

TSE 1000BASE-X/SGMII PCS only w/LVDS I/O

Hey Guys, I know this has been discussed a few times, but I couldn't find the answer I was looking for. I'm using a Stratix IV GX board with the Marvell Phy. I have a stripped down version ...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
15 years ago

How to get the PCS/PMA to work in SGMII mode?

I've done everything but still can't get the MAC with PCS/PMA to work in SGMII mode, external is a Marvell PHY 88E1111.

I always get same values for the dev_ability and partner ability register: 0x41a0 which means everything is correct for Base1000-X mode. The funny thing is if i hold the reset of PHY ==> also having same values. haha!!!

Control Register of PCS: 0x1140

Status: 0x2d (done negotiation)

But if i use reference design from Altera (TSE mac is instantiated in SOPC), without doing anything, just read back those PCS values, I have correct value for Partner Ability register, in SGMII mode which is 0xd801.

...

What else can i do?

Jeff