DP83867E: MDIX and cross wire in pare singal

Tony Tang

Part Number: DP83867E

According to the datasheet section quoted in below. have some questions:

When mirror signals between PHY and RJ45, must swap */- signal pare? or optional to swap? if it is optional, can swap only partial signal pare? Is it automatically detected? or need register configuration to enable WIRE Cross?

over 3 years ago

0 Kallikuppa Sreenivasa over 3 years ago

TI__Guru**** 190239 points

Hello Tony Tang

Thank you for the query. I am seeing the DP83826 title and then the 867E title.

Is your question regarding the 867E. If you are looking to configure the mirror mode, please follow the datasheet instruction to reverse the channel and signal polarity.

Please refer to the 867E EVM.

Regards,

Sreenivasa

0 Tony Tang over 3 years ago in reply to Kallikuppa Sreenivasa

TI__Mastermind 29012 points

Sreenivasa,

I am query 867, because I did not search out 867 related mirror and cross wire information. but search out something about DP83826.

SO, if use mirror mode in hardware/schematic(not from register configuration), also need to reverse channel signal polarity from */- to -/+ in hardware/schematic?

+1 Kallikuppa Sreenivasa over 3 years ago in reply to Tony Tang

TI__Guru**** 190239 points

Hello Tony Tang

Thank you for the reply.

I am query 867, because I did not search out 867 related mirror and cross wire information. but search out something about DP83826.: Not sure if i understand the comment fully.

Your understanding of the mirror mode is correct.

Regards,

Sreenivasa

0 Kallikuppa Sreenivasa over 3 years ago in reply to Kallikuppa Sreenivasa

TI__Guru**** 190239 points

Hello Tony Tang

Do you have any additional questions ?

Regards,

Sreenivasa

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DP83867E: MDIX and cross wire in pare singal