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Difference between Tree routing and Daisy chain routing

C Shiva

Dear all,

   What's the main difference between tree routing and daisy chain routing? Whta's most preferred in these? Usually tree routing is used for DDR and daisy chain for SDRAM.

  What's the preferred routing for clock signal? I think tree routing.

  Any inputs will be appreciated.

Thanks,

Shiva.

  • sabels

    Refer to the vendor datasheets on how to route these items since there many preferences out there.  I lean towards daisy chain routing unless the vendor datasheet says explicitly to use tree routing.  DDR3 is strictly daisy chain for everything now due to the write leveling ability of the memory controller chips.

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