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I need a level shifter for RMGII signals

Adam Torma
Mastermind 45575 points

I am trying to find a level shifter for my system.

I have attached the block diagram for your reference.As in Block diagram RGMII and RMII are high speed signals so i am worrying about loss in signal if i don't have buffer in the path.

Can you suggest any idea on the attached diagram and if a level shifter can help drive the signal. 

  • 0
    TI__Guru 62180 points
    Hi Adam,

    what are the voltage levels for translation ? It looks to be bidirectional , what are the speeds supported ?
  • 0 in reply to ShreyasRao
    Intellectual 700 points

    Hi Shreyas

    • The voltage level translation on one side will be selective 1.8/2.5 and on the other side it is 3.3.
    • The Level Shifter should be auto direction sensing.
    • Maximum data rate on the trace will be 1000Mbps.

    The purpose of using level translator is to translate the logic level as well as it should provide driving capability to the signals.

    Regards
    Nitesh

  • 0
    Intellectual 700 points
    Hi Adam

    Thanks for your prompt support.

    I am concerned with all the signals coming out from the switch like SPI,SDIo and Ethernet.
    This all interface has to be validated at SOC level so cannot skip any such parameter like data rate,clock,rise time,fall time etc.

    Regards
    Nitesh
  • 0 in reply to Nitesh Kumar74
    TI__Mastermind 30605 points
    Hello Nitesh,

    We currently do not have any translators that can support a data rate of 1000Mbps. Our auto-direction sensing translators operate at 100Mbps maximum.

    In your case, from 1.8V to 3.3V our auto-direction translators support 60Mbps and from 2.5V to 3.3V they support 100Mbps.