DDR2 controller

Discussion in 'General Electronics Chat' started by josephk, Feb 20, 2009.

  1. josephk

    Thread Starter New Member

    Feb 20, 2009
    1
    0
    Hi,
    My chip will have DDR2 controller built in and I am about to sign up the pin assignment. I would like to optimize the balls in a way that the board layout will be easy. I contacted a board layout house and gave them board netlist, which includes my chip (with preliminary pin assignment) and 4 discrete DDR2 devices and asked them to give me a suggestion about pin swap in order not having signal crossing and making sure that a Byte won't be split between two layers. They reply to me and say that beside the layout they need to do SI simulation.

    The question is - Do I need to do SI simulation for just pin optimization? The SI can be done later when I will do the final layout, right now I want to release my chip for Tapeout and would like to make sure the pins was selected correctely.

    Thanks,
    Joseph
     
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