DP83TC811R-Q1：The power up timing of DP83TC811R-Q1

Hi Judd, 

I can look into if we have a max value T5.3 and let you know.

As for the max T5.5 value, we can not guarantee the PHY will perform as expected if the stabilization time is higher than our max value spec'd.

Thanks,

Cecilia

Hi Cecilia,

For T5.5,could you descrip it in detail or take some risks for example?

From the timing diagram,we can know crystal and VDD has start and ready before MDC.

T5.5 over limits like PHY keeping no-load operating condition.

Hi Cecilia,

Have some porogress in this timing issues?

Hi Judd,

I will have to confirm with our design team on these timing issues.

Thanks,

Cecilia

Thank you and look forward your reply.

Hi Cecilia，

Two weeks have passed,is there any new information?

Hi Judd,

Apologies on the delay. I am still verifying with our validation team and need to confirm if this is information we can share in public or if you will have to email us privately. Please allow me 1-2 more days to discuss with my team.

Thanks,

Cecilia

Hi Cecilia,

I can mail to you with my company email if the information is privately.Could you tell me your email address?

Thanks.

Hi Cecilia,

Thanks for your reply.

From the answer,we can know it has no risks in our application,but we still have two questions need you help check.

1)For T5.3,Our board is 827us,TI's EVM board is 1300us.

Whether they all meet the requirements?

Furthermore,Whether there is a way to adjust the starting time of Crystal or what the max limit?

2)For T5.5, 60ms seems more like min limit,not max limit.

Hi Cecilia,

For T5.5,do you have any plans to update the datasheet?

Could you share us the time schedule?

Thanks a lot.

Thank you very much.