DP83TG720S-Q1: DP83TG720S-Q1

yang xianhui

Tool/software:

In our project, the TI PHY (DP83TG720SWRHARQ1) is connected to the switch (model: Realtek 9071_CL) via SGMII. I would like to know if this PHY chip has the register function as shown in the figure below to detect receive/send fault？

6 months ago

0 Undrea Fields 6 months ago

TI__Genius 12530 points

Hi Yang,

There are error detection registers in the PHY. I'm looking for equivalent registers and will get back to you.

Regards,

Undrea

0 Undrea Fields 6 months ago in reply to Undrea Fields

TI__Genius 12530 points

Hi Yang,

There are several registers to relay the status of errors on SGMII interface. Please see the app note on the product page which details a few specific to the SGMII interface. https://www.ti.com/lit/pdf/snla473

Regards,

Undrea

0 yang xianhui 6 months ago in reply to Undrea Fields

Prodigy 30 points

Sorry, I could not find the registers I need in the application note (SGMII Troubleshooting Guide, https://www.ti.com/lit/pdf/snla473). What I am looking for are registers similar to those shown in my provided picture. Our purpose is to continuously poll these registers in order to determine whether there are faults in transmission or reception. If a fault persists for a long time, we will attempt to recover by restarting the corresponding PHY. Could you provide the specific registers?

0 Undrea Fields 6 months ago in reply to yang xianhui

TI__Genius 12530 points

Hi Yang,

There is a PMA_STATUS register at address 0x1901 with equivalent receive fault bits.

In addition there are CRC error registers for Tx and Rx at addresses 0x638h - 0x63Eh.

Regards,

Undrea

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DP83TG720S-Q1: DP83TG720S-Q1