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AFE7950: LMFS Configuration for 6 RX Channels Using AFE7950

Keerthana Unnikrishnan
Prodigy 40 points
Part Number: AFE7950

Tool/software:

Hi, I have 6 RX paths in my design. According to the AFE7950 datasheet, the device supports 4 RX ADCs and 2 Feedback ADCs. If I configure the 2 Feedback ADCs to operate as standard ADCs, giving me a total of 6 RX channels, what would be the appropriate LMFS configuration assuming I use 8 JESD lanes (L = 8)?

And how to configure AFE for this mode in Latte.

  • 0
    TI__Genius 17781 points

    Hi Keerthana,

    Are the Rx and FB channels using the same decimation factor? If they are then typically we would use one of two configurations

    1. For widerbandidth modes use 6 lanes. (On the Rx side use a LMFS of 48410 and on the FB side use 24410)
    2. For narrow bandwidth modes use 3 lanes. (On the Rx side use a LMFS of 28810 and on the FB use 14810)

    If you can share more info on your AFE configuration I can provide more advice. 

    Regards,

    David Chaparro