Problems with High Bit Error Rates - 4.1 English

GMII to RGMII Product Guide (PG160)

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4.1 English

On the RGMII interface, the RX data should provide sufficient set-up time with regard to the RX clock so that it can be sampled correctly. The IDELAY components are provided on the RX datapath. The correct delay value must be specified so that the RX data can be correctly sampled.