DP83822I: Clamp diode and the value of internal pull-up and pull-down resister

Hi Cecilia,

Could you kindly advise whether there are clamp diodes or not ?

Thank you and best regards,

Michiaki

Hi Cecilia,

Does DP83822 have clamp diodes on all pins ?

And which type of clamp diodes does DP83822 have ?

Thank you and best regards,

Michiaki

Hi Michiaki,

May I ask what the purpose of understanding the different types of diodes internally is for? 

Thanks,

Cecilia

Hi Cecilia,

Customer would like to know whether there is clamp diode to positive power supply ot not.

Thank you and best regards,

Michiaki

Hi Michiaki,

How do the different types of clamp diodes affect the customer's decision for the DP83822? I'd like to understand their design and why it is important. 

Thanks,

Cecilia

Hi Cecilia,

Our customer has faced the issue which is seen the remaining voltage even though the system turned off.

So customer would like to know DP83822 has clap diode to positive side or not.

I would much appreciate we got your support.

Thank you and best regards,

Michiaki

Hi Michiaki,

I will have to contact our design team to find out about the clamp diodes.

Thanks,

Cecilia

Hi Cecilia,

Sorry for pushing you but could you kindly share the latest situation ?

Thank you and best regards,

Michiaki

Hi Michiaki,

I can only confirm with you that we do have the clamp diodes on all of our pins as they are spec'd in our datasheet. However, the details of our design cannot be published on the web as it is confidential design info. 

In the customer design, can you explain to me more why they are still seeing a voltage when the system is off? What pins are they still seeing a voltage on? Is there anything else supplied to the PHY?

Thanks,

Cecilia