100BASE-TX Scrambler Problem

You will notice that when TXEN is deasserted, ie. between frames,
> the LFSR is forced to all zeros (11 bits of value 0 expressed in > hex notation).
>
The clock input is not the MII.TXCLK but refers to the bits in the 5B code-group.
This makes me believe that the TXEN is not the MII.TXEN which is only valid
during frames.
It is rather a global signal indicating that the transmitter is sending signals
to the copper.
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bilsen
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