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DP83867IS: With regards to the Application Report SNLA243–October 2015

Part Number: DP83867IS

Hello all,

With regards to the Application Report SNLA243–October 2015 (related to the DP83867 RGMII timing) please can you help me understand where the MinSR (0.5ns) and MinHR (0.25ns) in Table 3, Page 4 come from.

Per Table 1, page 3 it seems the values should be 1.2ns (TsetupT min) and 1ns (TholdR min) respectively.

  • Hi Daniel,

    MinSR and MinHR are values of the IO buffer of the DP83867. They are not part of the RGMII spec, and they are not documented in the DP83867 datasheet. They are used as an example of what can be done with the timing budget if the required setup and hold time of the IO buffer is better than the RGMII spec.

    Best Regards,