100BASE-TX Scrambler Problem
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bilsen
Sep 17, 2014, 11:38:01 PM9/17/14
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> woody.brison wrote:
> 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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> 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.
--
posted via
http://forums.cabling-design.com/ethernet/100base-tx-scrambler-problem-9010-.htm
using Cabling-Design's Web, RSS and Social Media Interface to
comp.dcom.lans.ethernet and other telecom groups
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