2 Replies Latest reply on Sep 26, 2012 12:44 AM by lhoussain.aitassou_subcontractor

    DDR2 clock pair differential resistor

    lhoussain.aitassou_subcontractor

      Hello,

      I'm Lhoussain and I'm working with DDR2 wizard to simulate DDR signals.

       

      About the used  topology: I have clock routed in Y format like in the picture below

      micron-routing-recommendations.jpg

      One problem that I have  is the clock crossover , and after simulating with different RT values I observed that with RT values in order of 400 - 500 ohm , I have got

      better results while simulations fails with the recommended values are in the order of 100ohm .

       

      Any suggest ?

       

      Thank you