Re: [10GBT] Functional block diagram
good, but I have some more comments:
Missing TXC<3:0> into PCS Transmit
TX_EN has no source, I think you intended for PHY Control to be the
10GBTreceive is not needed, in 1000BASE-T the '1000BTreceive' was used for
carrier sense and collision detection.
my print out there are very faint remnants of lines from the original diagram
that haven't been deleted. You can see these as objects when you ungroup the
See attached. I made the changes you suggested to
reflect that the left side interface is now XGMII and not GMII. I also removed
the Carrier Sense function since 10GBASE-T will not operate in half duplex
I pulled the Transmit Enable function into the PCS
Transmit block since the removal of the TX_EN signal left all inputs to this
coming from the PCS transmit block so it can be detailed out in the
description of the PCS Transmit function.
In the attached file I have also included the clause 48
and clause 49 figures so others can easily take a look at them. In one sense
it doesn't matter what you start from. In the end, the functional diagram for
10GBASE-T has to stand on its own merits. I find that the the clause 40 figure
provides more detail on the MDI interface and many of the functions in the PMA
and MDI will operate logically as they did in 1000BASE-T and the structure of
the interface primitives.
We will probably have to borrow some of the Synch, Frame
and Deskew functions from .3ae from the clauses you suggested to describe
operation of the XGMII to PCS operation.
wondering whether the 1000BASE-T diagram is the right starting point.
Perhaps We should start with the clause 48 or 49 diagram and build on
Otherwise, your diagram need the following
XGMII interface should be: TX_CLK, TXD<31:0>, TXC<3:0> and RX_CLK,
remove: COL, TX_EN, TX_ER, RX_DV, RX_ER, CRS (actually the entire carrier
sense block should be removed)