DP83826E: 10Base-T compliance test procedure

Itoh,

You may select the required pattern for test modes using register 0x27 (as described in datasheet)

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Regards,

Vikram

Hi Vikram-san,

My customer just want to double check if the sequence on SNLA266 appendix for 10base-T is applicable to DP83826.

My customer checked the desired test can be done with the script on SLNA266.

Regards,

Itoh

I am testing 10Base-T compliance test, DP83826E.

For the PHY setting procedure, refer to the following URL.

DP83826E: 10Base-T compliance test procedure - Interface forum - Interface - TI E2E support forums

DP83822EVM: Compliance Test for 10BaseTe Test pattern - Interface forum - Interface - TI E2E support forums

10Base-T waveform  has noise. look like 125MHz Frequency Nose.Please see Attachment.

There is a possibility of circuit noise.

However, I want to check if the PHY register setting is correct.

Please give me advice.

10Base_waveform.xlsx

Best regards,

Niwa

Register setting is correct.

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Regards,

Vikram

Vikram-san

Thank you for your response. Please tell me another point.

Why do you need this following?

4- enables analog loopback mode

Register: 0x0016

Value: 0x0108

Best Regards,

Niwa

Hello Kenji,

I am not sure. One thing I can think of is that if some data patterns come out during the link-up state then loopback enabling is a way to force PHY to the link-up state.

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Regards,

Vikram