AFE7906: HOW TO SYNC 2 SEPERATE JESD204B

Aishwarya K V

Part Number: AFE7906
Other Parts Discussed in Thread: LMK04828

Tool/software:

We have a requirement of synchronization two identical boards.

The FPGA Board has AFE7906 chip which is positioned on its respective FMC board mounted on respective FPGA cards. TWO LMK04828 is used on respective boards. How to establish the synchronization over JESD204B ?

over 1 year ago

0 David Chaparro over 1 year ago

TI__Mastermind 18291 points

Hi Aishwarya,

In order to synchronize two AFEs the main issue will be the clocking. The clock and sysref to both AFEs will need to be aligned meaning that the LMKs will need to have a common clock source and be aligned such that the outputs are aligned.

Please see the below reference design as a reference for how this was done.

https://www.ti.com/lit/ug/tiduez6/tiduez6.pdf

Regards,

David Chaparro

RF & microwave

RF & microwave forum

AFE7906: HOW TO SYNC 2 SEPERATE JESD204B