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I have a question on Clause-49 (Physical Coding Sublayer (PCS) for 64B/66B, type 10GBASE-R).
We have two bits for sync header having following meaning,
00 - Invalid block
01 - Data block
10 - Control block
11 - Invalid block
I get confused,why we have taken two bits, even if we can indicate data/control block using one bit only.
Can I know the reason,why is it so?
Hari S. Patel