RE: XGMII a/k/r and XGXS - PCS Interface
Una Quinlan
For the case you described of:
(c) EOP Case (with 2 residual bytes): /E/ /D/ /T/ /K/ /R/ /R/ /R/ /R/. How could this be encoded? It may not be possible to adopt an approach like the SOP case, where an Error codeword is transmitted, and a delayed EOP indication follos. Because this would eat into the IPG by up to 7 bytes.
one possible solution is to have a multiple stage delay from input to output such that
the error can be detected and then change the data that is at the output of the delay just
before it is shipped on out to the next layer.
My memory tells me that someplace in 802.3z (1Gig) there was a multiple stage delay
on receive before a packet was delivered to the RS/MAC.
Tom Mathey