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AM625: DDR Pull Up

Mari Tsunoda
Expert 5726 points
Part Number: AM625
Other Parts Discussed in Thread: SK-AM62B-P1

Tool/software:

Hi Team,

There are different pull up values recommended on different documents for DDR(DDRSS) DDR_RSTN lines.

sprad21h and sprado3a suggest 10kΩ 

whereas

SK-AM62B-P1 schematic shows 2.2kΩ

Which should they follow?

Best regards,

Mari Tsunoda

  • 0
    TI__Guru* 87040 points

    Hi Mari,

    please have your customer refer to Proc142A_Schematic_Revision_Readme.pdf in the design package for the board.  These have updated notes and addresses errors in the original EVM schematics.  It mentions the resistor should be changed to 10K pull down, no pull up necessary

    Regards,

    James