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XQSHEN's avatar
XQSHEN
Icon for Occasional Contributor rankOccasional Contributor
6 years ago
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Question about UniPHY with DDR2

1) avl_size only has 3 bits, how to set burstcount = 8? 2) during ddr2 simulation using intel model, there are two many avl_ready = 0 even I set avl_size = 3'd4; It significantly impact the data ...
  • ybin's avatar
    ybin
    6 years ago

    Hello,

    avl_size is generated according to the maximum AVMM burst length, the default length is 4, this is why you will find the signal is only 3bits. You can enlarge burst length is you want to improve efficiency of controller.

ybin's avatar
ybin
Icon for Occasional Contributor rankOccasional Contributor
6 years ago

Hello,

avl_size is generated according to the maximum AVMM burst length, the default length is 4, this is why you will find the signal is only 3bits. You can enlarge burst length is you want to improve efficiency of controller.

  • XQSHEN's avatar
    XQSHEN
    Icon for Occasional Contributor rankOccasional Contributor
    6 years ago

    Should that setting impact the burst length of below?

    • ybin's avatar
      ybin
      Icon for Occasional Contributor rankOccasional Contributor
      6 years ago

      The setting you mentioned doesn't impact avl_size, but it can impact efficiency, the default value is 8, no need to modify it. You can just modify maximum AVMM burst length value.

      • XQSHEN's avatar
        XQSHEN
        Icon for Occasional Contributor rankOccasional Contributor
        6 years ago

        Thanks, it's clear now. You can close this topic.