DP83867IR: Please tell me about the details of the reception error.

user1077147

Prodigy 95 points

Part Number: DP83867IR

Hello,

Regarding "PHY has detected a Receive Error." In the data sheet P10,
Please tell me when an error occurs.

Is there any document that describes it?

over 4 years ago

0 Nikhil Menon over 4 years ago

TI__Genius 11725 points

Hello,

The PHY may detect a receive error when there is a decode error, a packet cannot be decoded by the PCS. This is basically a packet error indication.

Thank you,

Nikhil

0 user1077147 over 4 years ago in reply to Nikhil Menon

Prodigy 95 points

Hello,Nikhil-san

Thank you for your answer.

What are the possible causes of decoding errors?

Also, if a link has not been established with the link partner
Will this error occur?

Are carrier expansion errors included in this error?
Furthermore, what kind of error is a carrier expansion error?

0 Nikhil Menon over 4 years ago in reply to user1077147

TI__Genius 11725 points

Hello,

We are looking into your questions and will provide feedback by Friday.

Thank you,

Nikhil

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

TI__Genius 11725 points

Hello,

There can be several sources of decoding errors, including signal integrity issues, EMC/EMI issues, or clock issues. If there is no link, there should be no packets received, thus there cannot be a receive error.

Thank you,

Nikhil

0 user1077147 over 4 years ago in reply to Nikhil Menon

Prodigy 95 points

Hello,Nikhil-san

Thank you for your answer.

I tried the observation of RGMII.
It was easy to generate a false carrier indication. Just unplug the cable.
Is there a way to generate a code error in the PHY register settings that cannot generate Receive Err?