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Serial PMA/PMD delay limits




Serial PMD-ers,

You may not have noticed a criterion for the PMA or PMD hiding in clause 44,
which isn't helpful!

We need to air this (delay maximum) in the PMD tracks and add
cross-references in clauses 51, 52 and 54.

As to table 44-2, saying that "Serial PMD ... Includes serial PMA and PMD,
..." is wrong, surely?  Should that read "Serial PHY ... Includes serial PMA
and PMD, ..." ?

Piers

> -----Original Message-----
> From: pat_thaler@agilent.com [mailto:pat_thaler@agilent.com]
> Sent: 27 March 2001 21:51
> To: boazs@mysticom.com; stds-802-3-hssg@ieee.org
> Subject: RE: Clause 48 Questions
> 
> 
> Boaz,
> 
> There is a difference between the delay specified in prior 
> drafts which was
> for MDI to XGMII and the delay specified here which is only 
> the delay of a
> single PCS or a single XGXS. The old delay therefore included 
> the PMD delay
> which now has a separate 512 bits round trip allocated.  ....