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LSF0204: Can LSF0204 use RGMII interface?

Leo Yang
Expert 7065 points

Part Number: LSF0204
Other Parts Discussed in Thread: TXS0102, LSF0102, SN74AXC8T245, SN74AXCH8T245, SN74AXC8T245-Q1, SN74AVC8T245, SN74AVC8T245-Q1

Hi team,

Is it acceptable to use LSF0204 in RGMII interface? If can't, could you recommend a device?

Best regards,

Leo

  • 0
    Guru 325520 points

    RGMII uses unidirectional signals. A buffered translator works best for those. What voltages and frequencies do you need?

    (MDC/MDIO are bidirectional, but slower, so the LSF0102 or TXS0102 could be used, depending on the actual speed.)

  • +1 in reply to Clemens Ladisch
    TI__Intellectual 1450 points

    Hi Leo,

    For RGMII interface, a highspeed voltage translator with tight output channel-to-channel skew is recommended. Hence, the best device recommendations we have are:

    • SN74AXC8T245, SN74AXCH8T245, SN74AXC8T245-Q1
    • SN74AVC8T245, SN74AVC8T245-Q1

    Here's a quick reference guide (Pg. 7) & an app note (Pg. 10 - 13) that gives a breakdown of RGMII interface.

    Hope this helps. Thanks!

    Best,

    Swathi