ADS54J40: ADS54J40 Latency

HENRY JUNG

Expert 2030 points

Part Number: ADS54J40

Dears.

What is the way to reduce latency in the ADS54J40?

What is the fast way to do JESD204B Link?

We are used Altera Arria 10.

Thank you

over 5 years ago

0 Neeraj Gill over 5 years ago

TI__Mastermind 20541 points

Hi Henry,

We are looking at your question and will get back to you soon.

Regards,
Neeraj

0 jim s over 5 years ago in reply to Neeraj Gill

TI__Guru* 91947 points

Henry,

The best way is to shorten the LMFC if possible. To do this, you would use the minimum value for K. Per the JESD204B standard, the values of K and F must meet the following equations:

17 < F*K < 1024

1 < K < 32

Another method is to use a lower value for RBD to reduce the latency. But care must be taken when choosing this value as if it is to low, the link will no longer have deterministic latency. See the attached file for more info.

Regards,

Jim

8512.Link Latency in JESD204B devices_TI.pptx

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ADS54J40: ADS54J40 Latency