TDA4VH-Q1: is eMMC_CLK siganl hookback a problem?

Tony Tang

Part Number: TDA4VH-Q1
Other Parts Discussed in Thread: TDA4VH

eMMC_CLK is not used as re-timing on TDA4VH (same as AM6x), will the hookback on SOC side cause problem? confirmed the SI on eMMC side is good.

SOC side:

Far end on eMMC side:

0 Mark L. 10 days ago

Hi Tony,

I'm unsure what your question is. What do you mean by hookback?

Regards,
Mark

0 Tony Tang 8 days ago in reply to Mark L.

Hi Mark,

Sorry for causing confuse. it means the signal rising/fall edge non-monotonic. If it cause problem?

And is eMMC_CLK used as re-timing on TDA4VH?

+1 Mark L. 8 days ago in reply to Tony Tang

Hi Tony,

Thanks for the clarification.

No, this will not cause a problem. The eMMC PHY handles the IO clock loopback internally.

Regards,
Mark

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