Part Number: DP83867IS
Hello,
I have a question about RGMII at 100Mbps mode.
Now I uses DP838367IS RGMII and it communicate in 100M mode.
When I monitored RGMII waveform during 100M communication, I found TXD was about 35nsec delayed to TX_CLK.
And there is no problem with this delay. It works well.
But DP83867IS RGMII specification says TskewR min is 1ns and max is 2.6ns.
From this specification, I don’t think 35nsec delay is acceptable. But it looks it is working.
So my question is that is required TskewR value at 100M mode different from 1G mode?
Regards,
Oba
