DP83TC811EVM: Transmit Latency Timing for RGMII to MDI

HS Teo

Part Number: DP83TC811EVM
Other Parts Discussed in Thread: DP83TC811R-Q1

From Data Sheet of DP83TC811R-Q1, there is min and max value for Receive Latency Timing for MDI to RGMII.

But only min. value for Transmit Latency Timing for RGMII to MDI is available, no max value tor the transmit latency timing.

Please advise on the reason for no max. value for Transmit Latency Timing, or there is a missing out in the Data Sheet.

Thanks,

over 3 years ago

0 Nikhil Menon over 3 years ago

TI__Genius 11725 points

Hi HS,

This is information has not been characterized. How will this information be used?

Thank you,

Nikhil

0 HS Teo over 3 years ago in reply to Nikhil Menon

Prodigy 50 points

Dear Nikhil,

Thanks for your support.

We are connecting the devices in chain structure. Max value of Transmit Latency Timing is critical, so that we could have the worst case scenario for the latency timing.

Please explain why Receive Latency Timing for MDI to RGMII has Min and Max value. But Transmit Latency Timing for RGSMII to MDI has only Min, but no Max value.

Thanks & regards,

Hui Seong

0 Nikhil Menon over 3 years ago in reply to HS Teo

TI__Genius 11725 points

Hi Hui,

Thank you for you patience. We are looking into the test data and will provide an update by Thursday.

Thank you,

Nikhil

0 Nikhil Menon over 3 years ago in reply to Nikhil Menon

TI__Genius 11725 points

Hi Hui,

Thank you for you patience. You can expect a maximum latency around 393 ns. Please note, this is not a guaranteed characterization, but has been observed on bench.

Thank you,

Nikhil

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DP83TC811EVM: Transmit Latency Timing for RGMII to MDI