Search for RMII Redriver/Retimer

Gerald

Hi Experts,

Our customer have RMII/NC-SI signals coming from external card, and they are violating the trace lengths for NC-SI/RMII interface. May I ask if can you help with the RMII redriver/Retimer?
NC-SI is RMII compliant interface between BMC and ASIC. The RMII interface is coming from BMC(AST2600). Do we have any RMII Redriver/Retimer? Customer don't need PHY but just RMII redriver/retimer. I was not able to find and hope you can help. Thank you so much in advance.

Kind regards,
Gerald

over 3 years ago

0 Chris Ayoub over 3 years ago

TI__Genius 15345 points

Hey Gerald,

I'm going to look into this for you. Just to confirm does RMII have to do with the Ethernet interface?

Best,

Chris

0 Gerald over 3 years ago in reply to Chris Ayoub

TI__Genius 9570 points

Hi Chris,

If you are pertaining to the link E2E post, no relation. Please only refer to details provided in this post. Sorry for the confusion. I will wait for your advise. Thank you.

Kind regards,
Gerald

0 Gerald over 3 years ago in reply to Gerald

TI__Genius 9570 points

Hi Chris,

We can also look into RMII Retimer along with level shifting capability from 1V to 3.3V because customer is using one level shifter which is also adding the delay to these lines.

Kind regards,
Gerald

0 Chris Ayoub over 3 years ago in reply to Gerald

TI__Genius 15345 points

Hi Gerald,

What is the speed of the RMII signal? After doing some research this looks like it could pertain to a different team. Is this for an HDMI application?

I was able to find a post with a similar need.

Let me know and I can connect you to the right team.

Best,

Chris

0 Gerald over 3 years ago in reply to Chris Ayoub

TI__Genius 9570 points

Hi Chris,

Customer is using RMII between SOC and BMC(sitting on external plug-in card). The speed of RMII signal is 100Mbps with 50MHz clock, this is not an HDMI application. They are using RMII signals as communication between SOC and BMC, they can name these RMII signals as NC-SI interface from BMC as well.
They basically need RMII to RMII retimer where they have single ended data lines as per RMII interface.

Thank you so much and kind regards,
Gerald

0 Chris Ayoub over 3 years ago in reply to Gerald

TI__Genius 15345 points

Hi Gerald,

I have contacted the HSSC team and am waiting for a response. I will update you when they respond.

Best,

Chris

0 Gerald over 3 years ago in reply to Chris Ayoub

TI__Genius 9570 points

Hi Chris,

Thank you so much for your help. We will wait for updates.

Kind regards,
Gerald

0 Chris Ayoub over 3 years ago in reply to Gerald

TI__Genius 15345 points

Hi Gerald,

Sorry for the delay on this. I have checked with 3 different teams and they all don't have support for this application. I am currently checking with the ETH-PHY team and I will let you know if they can support this application.

Best,

Chris