Part Number: LMK04826
In my custom Board, I am having 2 LMK04826's and 4 JESD ADC's
I am using these LMK's for JESD Synchronization.
Now LMK 1 output is connected as input to LMK 2.
So to achieve JESD Synchronization, first I need to Synchronize two LMK's
1. Can It be done by toggling the SYNC_POLL bit ?? (or)
2. I need to use 0 Delay mode ??
How to achieve LMK Synchronization ??
What is the use of 0 Delay Mode ??
My coworker will get back to you next Monday.
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Please take a look at this Multi-Clock synchronization app note and this thread. It will help to explain the 0-delay and synchronization.
The simplest way it to use zero delay mode with a reference the same frequency as the SYSREF. Then the SYSREF and all clock frequencies will be aligned.
Do you require the SYSREF pulse to occur at only on the LMFC frequency multiple as per JESD204B spec, or also at the exact same moment at the two devices?
In reply to Timothy T:
I need SYSREF pulse only on the LMFC Frequency multiples .
Why to use sysref as feedback clock ?? Any benefit of using sysref over DClk_out_6 / Dclk_out_8 ??
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