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TMDSCNCD263P: Necessity of high speed data switch

Part Number: TMDSCNCD263P
Other Parts Discussed in Thread: AM263P4

Hello,

on the TMDSCNCD263P a 1:2 High Speed Data Switch is implemented in order to connect NAND and NOR flash to the AM263P4.

Why is this switch necessary?

Is it there to implement different pull up strengths for the memories?

Regards
Manuel

  • Manuel, 

    The high-speed switch U80 is implemented to avoid stubs and reflections along shared nets between the QSPI NAND flash and OSPI NOR flash. 

    In addition, different pull-ups are needed on shared nets, and the switch helps to separate the nets between each flash device.

    Regards,

    Brennan