Hi,
I am measuring the TX and RX latency from the PHY and compare them to given values in its datasheet.
Currently the 100M MII latency is 40 ns and 170 ns. All latencies are from posedge MII_CLK to start of /J symbol at MDI.
I have FAST_RXDV (Register 9 bit 1) enabled.
In my lab I measure a transmit latency of 120 ns instead of 40 ns. So my latency is 80 ns greater.
Are there any hidden register bits I have to set to get this fast TX latency?
Best regards,
Alex
