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TS3DDR4000: Performance at 2GHz

David Ellis
Prodigy 185 points
Part Number: TS3DDR4000
Other Parts Discussed in Thread: TS3DV642

I would like to multiplex 2 DRAM busses. 

I would like to operate at 2 GHz or 4 Gb/s. 

 

Would this speed be of concern for the  TS3DDR4000?  Is there another part that would be better?

 

  • 0
    TI__Intellectual 2900 points
    Hi David,

    I am not aware of any speed concern.

    The signal frequency is 2GHz, while typically, TS3DDR4000 is 5.6GHz for signal ended signals. The bandwidth of the system over the signal frequency should be enough, for 5.6GHz/2GHz = 2.8 times.

    Does TS3DV642 work for you from the architecture point of view? It has the relatively higher bandwidth.
  • 0 in reply to Fan.Wang
    TI__Prodigy 185 points

    The TS3DV642 appears to be intended for differential operation.  Most of the signals I would pass thru it are single-ended.

     Should that be a concern?

     

    Can I consider CEC equivalent to the D pins?  Essentially use it as another DQ pass through?  Same performance characteristics?

    Same for

    HPD?

    SCL?

    SDA?

     

  • 0 in reply to David Ellis
    TI__Mastermind 45595 points

    David, 


    I typed in TS3DV642 into the switches and mutliplexers e2e search bar and found this post.  

    I typed in TS3DV642 single ended into the switches and multiplexers search bar and found this posting. 

    Let us know if these post answer your questions. 

    Thank you, 

    Adam