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DRA785: DDR3 configuration - SDRAM_DRIVE question

Part Number: DRA785

About the SDRAM_DRIVE in TRM of DRA785:

About the SDRAM_DRIVE parameter , whether means drive impendence in SOC side?

  • If yes , there are 34/40/48/60/80 source driver impendence in IBIS model ,  why only RZQ/6 =40, RZQ/7=34  can be selected ?
  • If no,  what’s the exactly meaning of this parameter?