[802.3ae] Questions on section 49.2.5
I have the following questions about section 49.2.5
1. In the first paragraph, the ratio between the data-rates
of XGMII and the PMA service interface is mentioned to be
16:33. Is this correct or is 32:33, the correct ratio ?
2. With respect to the following sentence in the same paragraph:
"Where the XGMII and PMA sublayer data rates are not
synchronized to that ratio, the transmit process will
need to insert idles, delete idles, or delete sequence
ordered sets to adapt between the rates."
The above rate adaptation is intended for adapting for the
minute frequency offset that can be present if the XGMII
transmit clock (TX_CLK) and the PMA_TXCLK are not frequency
locked - correct ? What I am trying to clarify is that this
rate-adaptation is completely independent of the rate
adaptation required for interfacing to WIS.
Burt S, Christian.
Tel : (613)599-5797
Fax : (613)599-1247