DS280DF810: DS280DF810 Support Data Rate

Hi Hiroshi-san,

Thanks for your interest in DS280DF810.  Are you able to share any information on your application?  Looking at your data rates, this does not seem to be a typical Ethernet application.

Regarding your questions:

Hiroshi Katagiri said:

Can the DS280DF810 pass PRBS-31 pseudo-random signals?

Yes, the DS280DF810 can pass PRBS31 signals.

Hiroshi Katagiri said:

Can I use the DS280DF810 to pass signals at three speeds: 25Gbps/16Gbps/8Gbps?

The DS280DF810 can retimer 25 Gbps, but can only support 16 Gbps and 8 Gbps in RAW mode (CDR bypass).  In RAW mode, the DS280DF810 acts similar to a limiting redriver, and the only equalization is CTLE.

Hiroshi Katagiri said:

There are two similar parts, the DS280DF810 and the DS250DF810. Is it okay to choose either one?

For 25 Gbps, either DS280DF810 or DS250DF810 is alright.

Thanks,

Drew

Drew-san

Thank you for your reply.

For this application, we are considering using a proprietary protocol between two FPGAs.

I have two questions.

1.
Is the reason for being limited to the redriver
because the input data rate is not within the Full/Half/Quarter range?

2.
When using 16Gbps and 8Gbps, will it go into RAW mode without any settings?
Or do I need to program it according to the SNLU182 documentation?

Best regards

Hiroshi Katagiri

Hiroshi-san

Due to the US Labor Day holiday, the response to your question may be delayed. We will look into your question when we return tomorrow, Sept 3rd. Sorry for the wait and any inconvenience it may cause.

Thanks,

David