DP83822H: ACK Response time

Hi Gerome,

Based on these information, 

Hideki Hayashi1 said:

1. How much is the minimum time of T4-T5 at Figure 7-14?

this will be 16ms +/- 8ms or 8.25ms +/- 0.25ms

Hideki Hayashi1 said:

2. How much is the minimum time and maximum time of T2-T3 at Figure 7-14

this will be 62.5us +/- 7us

Are those correct?

However customer test it and found 4ms and 14.9us and 102us in those data. Are they correct and pass compliance?

By the way, is this not changed by register setting?

Regards,

Hayashi

Hi Hayashi,

Those numbers look off compared to the standard, but the true tell-tale sign would be to run compliance to eliminate user measurement error. There is no register setting to adjust to my knowledge, and this setting should work out of the box.

Sincerely,

Gerome

Hi Gerome,

If there is a data for below, can you please share that?

1. actual tested data of T4-T5 (max value, minimum value)

2. actual tested data of T2-T3 (max value, minimum value)

Best regards,

Hayashi

Hi Hayashi,

We do not have sharable information available. Is customer seeing wide discrepancy compared to nominal?

Sincerely,

Gerome