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RE: Management PMA/PMD registers for XAUI




Boaz,

There aren't any separate PMA registers. They are PMA/PMD registers and the
bits in them that apply to 10GBASE-X largely relate to PMD functionality.
The one bit that is specifically PMA is 1.1.2 receive link status which
tells whether the PMA is locked. XGXS has lane sync bits and I don't think
it needs a separate lock bit.

Pat

-----Original Message-----
From: Boaz Shahar [mailto:boazs@xxxxxxxxxxxx]
Sent: Tuesday, April 10, 2001 11:23 AM
To: 'THALER,PAT (A-Roseville,ex1)'; Justin Gaither; 802.3ae
Subject: RE: Management PMA/PMD registers for XAUI


Pat,
The XGXS layer implements all the functions that are associated with both
the 10GBASE-X PCS and 10GBASE-X PMA defined in clause 48. If in the XGXS
case there is no need for the implementation of the PMA registers (And I
think that there is NO need for that), why it is needed in the case of
10GBASE-X PMA?
Boaz

> -----Original Message-----
> From: THALER,PAT (A-Roseville,ex1) [mailto:pat_thaler@xxxxxxxxxxx]
> Sent: Tuesday, April 10, 2001 7:58 PM
> To: Justin Gaither; 802.3ae
> Subject: RE: Management PMA/PMD registers for XAUI
> 
> 
> 
> Justin,
> 
> As currently defined, there is only a single PMA in the stack which is
> attached to the PMD. An XGXS doesn't have a separate PMA 
> sublayer. I think
> we should leave it that way. We already fragment the physical 
> layer into a
> lot of sublayers.
> 
> Regards,
> Pat
> 
> -----Original Message-----
> From: Justin Gaither [mailto:jgaither@xxxxxxxxxxxxxxx]
> Sent: Tuesday, April 10, 2001 7:19 AM
> To: 802.3ae
> Subject: Management PMA/PMD registers for XAUI
> 
> 
> 
> When a 10GBase-X PCS is being used as a PHY XGXS, it has a XAUI PMA. 
> Should this PMA have all of the Management registers 
> specified (ie. 1.0,
> 1.1, 1.2&1.3, 1.4, 1.5, 1.8, 1.9)? Or are these registers for the
> PMA/PMD that actually tied to the fiber PMD?  
> 
> Regards,
> 
> justin
> 
> -- 
> Justin Gaither                       Phone: 512-306-7292  x529
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