DRA829V-Q1: SGMII eye mask requirement difference

Xingyu Zhu

Part Number: DRA829V-Q1
Other Parts Discussed in Thread: DRA829

Tool/software:

Hi expert,

Our customer is using DRA829 SGMII connecting to PHY DP83TG721-Q1. The SGMII eye width of Jacinto is 5pS. But the PHY need 200pS. Could you please check the huge difference? Thank you

Best Regards,

Xingyu Zhu

2 days ago

0 ShreyasRao 1 day ago

TI__Guru 58370 points

Xingyu,

can you please give me the reference for the table4-1? I think that the table is referencing the min eye width that the RX can work with.

We have validated the SGMII to be compliant to the 802.3ap clause 70-7 requirements with X1 0.125 and X2 0.325; which satisfies the PHY requirements of the eye mask.

0 Xingyu Zhu 1 day ago in reply to ShreyasRao

TI__Expert 3305 points

Hi Shreyas,

Thanks for your reply. Table4-1 is from below link.

https://www.ti.com/lit/pdf/spracp4

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DRA829V-Q1: SGMII eye mask requirement difference