TDA4VH-Q1: eye mask for RGMII

Xingyu,

I am unaware of the eye mask requirements for the RGMII. The RGMII has a slow speed clock of 125MHz and with 4 TX/RX pairs gives the desired data throughput.

The timing requirements (setup and hold times) are specified in the datasheet, which must be adhered to. The "eye mask" can be estimated using the Voh/Vol and the signal's slew rate (rise/fall times).

We have generally seen that the RGMII has no issues with signal integrity given its slower speed which gives a good timing margin.