DP83825I: Schematic review/questions

TI-CSC

Genius 13175 points

Part Number: DP83825I
Other Parts Discussed in Thread: DP83825EVM

Hello E2E Experts,

Good day.

The customer is requesting the confidentiality of the inquiry.

I'm planning the part in subject for our new product concept.

I've also downloaded DP83825EVM schematics and PCB as Ref design.

Need your help with the following:

1. I've attached my schematics. I would appreciate a schematic review from your side.

2. Can you share DP83825EVM BOM? I didn't find one on your site

3. Regarding DP83825EVM schematics (also attach), can you explain why 33-ohm resistors ref R9, R10, and R17 are needed?

7573.design files (4).zip

Thank you in advance for supporting us.

Regards,

CSC

over 3 years ago

0 Gokul Koraganji over 3 years ago

TI__Mastermind 19250 points

Hi CSC,

Please let me provide the feedback by end of Thursday.

--
Regards,
Gokul.

0 TI-CSC over 3 years ago in reply to Gokul Koraganji

TI__Genius 13175 points

Hello Gokul,

Do we have any updates on this thread?

Thank you and I look forward to your advise.

Regards,

CSC

+1 Gokul Koraganji over 3 years ago in reply to TI-CSC

TI__Mastermind 19250 points

Hello CSC,

Sorry for the delay in response.

Please find attached, the feedback of the customer schematic and BOM of EVM.

8400.ETHERNET_feedback.pdf

3302.HSDC045B(001)_BOM.xls

Regarding 33 ohm resistors, looks like EVM is by default configured for loopback on RMII side. In the actual application, these resistors are optional and can be chosen accordingly after signal integrity simulations on RMII side.

--
Regards,
Gokul.

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DP83825I: Schematic review/questions