DP83822I: No response on connecting while INT is low

Shaofeng Luo

Part Number: DP83822I

Hi expert team

We found that DP83822 will keep stuck while there are some pending interrupts in 0x12/0x13, and it will not response to cable connecting. Is it necessary for DP83822 to clear all interrupts before connecting? Thanks!

over 2 years ago

0 Gerome Cacho over 2 years ago

TI__Mastermind 40715 points

Hello,

I am unaware of this behavior of the PHY. If in case, are you ensuring that PHY's interrupt pin has been properly configured via Reg 0x11[0]? In addition, if interrupts are disabled by disabling the respective enables on Reg 0x12, 0x13, are they still seeing the issue?

Sincerely,

Gerome

0 Shaofeng Luo over 2 years ago in reply to Gerome Cacho

TI__Intellectual 1680 points

Hi Gerome

Thanks for your reply! Yes, read and clear 0x12/13 can solve this issue. Could you test on EVM? We've already told them disable the interrupt since they are using EtherCAT.

0 Gerome Cacho over 2 years ago in reply to Shaofeng Luo

TI__Mastermind 40715 points

Hello,

I will need to check in lab, but I am unsure if I can recreate an interrupt in a lab environment on the EVM. If they are using EtherCAT and therefore not using the interrupt, why is customer still looking into this?

Sincerely,

Gerome

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DP83822I: No response on connecting while INT is low