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DAC38RF83: Jesd204b lanes

Part Number: DAC38RF83

Hi

Does i need to match lenght the lanes?

I have 4 lanes .

shlomi

  • Shlomi,

    The JESD204B can allow lane skew up to within one multi-frame of JESD204 data format. The multi-frame is defined by the LMFS setting and K (number of frame per multi-frame) settings. The skew adjustment is made by the RBD (release buffer delay) of the JESD204. For detail, you may refer to the standard on JEDEC website.

    -Kang

  • Hi

     

    L = 4

    M = 8

    F = 4

    S = 1

    K = 1

    9.6Gbs per lane 4 lanes

    What is the allow lane skew?

  • Hi,

    your multi-frame is Lane rate/10bits per octet/4 octets per frame/1 frame per multi-frame = 240Mhz. This is about 4.16ns. To tolerate more lane skew, you may set K to higher number.