DP83822I: Potential reason for FLP abnormal

Hao Wang14

Part Number: DP83822I

Hi Team,

One piece DP83822 works abnormal because the FLP signal is weird, so it cannot be recognized by other Ethernet. Could you please help judge if this piece DP83822 is failed according to your experience?

The picture below is the waveform of the abnormal unit:

C1/C2 are the waveform captured on TD+/TD- pins.

The waveform of the good unit is shown below:

Thanks and Best Regards!

Hao

over 4 years ago

0 Nikhil Menon over 4 years ago

TI__Genius 11725 points

Hi Hao,

We are looking into this issue and will provide feedback by Tuesday next week?

Thank you,

Nikhil

0 Nikhil Menon over 4 years ago in reply to Nikhil Menon

TI__Genius 11725 points

Hi Hao,

What are the differences between the good setup and bad setup? Is it only the IC (same boards are used)? Can you provide a schematic?

Can you provide a register dump for both working and not-working devices for the following register?

0x0:

0x1:

0x4:

0x5:

0x9:

0xA:

0xB:

0x10:

0x11:

0x19:

0x467:

0x468:

Thank you,

Nikhil

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DP83822I: Potential reason for FLP abnormal