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Re: A Question about "Inter Packet Gap and SOP Lane alignment"

Hi Rich,

Two questions related to the state machines.

1. Can they be simplified somewhat ?
2. Is there any copyright issue with any of the machines ?



At 11:50 AM 7/16/00 -0700, you wrote:

>Your question is answered in a presentation made at the La Jolla meeting:
>"8B/10B Idle Pattern for 12-byte IPG" by
>Rich Taborek and Don Alderrou of nSerial,
>This proposal modifies the fixed starting /A/K/R/ Idle pattern for all
>applications of 8B/10B encoded 4-lane streams was accepted into the set of
>baseline proposals along with the core XAUI/XGXS proposal. The specific change
>is as follows:
>1) No change to EOP column which contains the first 1 to 4 columns of the IPG.
>Note that the EOP counts towards IPG.
>2) Transmit /A/ or /R/ randomly while maintaining minimum 16 column /A/ 
>3) Transmit /R/
>4) Transmit /K/, /R/ or /A/ randomly while maintaining minimum 16 column /A/
>spacing until SOP detected.
>Note that this proposal works for IPGs as small as 9. Detailed state machines
>are included at the end of the PDF file.
>Best Regards,
>Boaz Shahar wrote:
> >
> > Hello Steve,
> > I have a question in regards to your presentation "Inter Packet Gap..." in
> > the last meeting:
> >
> > You suggest to use only 2 columns of Idle as a minimum for IPG. In previous
> > proposals (e.g.
> >
> > slide 14) the suggested gap is a minimum of 3 columns-/A/, /K/, and 
> /R/. So:
> > Can you please say which of them should be eliminated, or define a 
> procedure
> > which say which type of Idle columns should be inserted?
> >
> > Thanks,
> > Boaz
>Richard Taborek Sr.                 Phone: 408-845-6102
>Chief Technology Officer             Cell: 408-832-3957
>nSerial Corporation                   Fax: 408-845-6114
>2500-5 Augustine Dr.        mailto:rtaborek@xxxxxxxxxxx
>Santa Clara, CA 95054  

Best Regards,

Devendra Tripathi
Vitesse Semiconductor Corporation
3100 De La Cruz Boulevard
Santa Clara, CA  95054
Phone: (408) 986-4380 Ext 103
Fax:	(408) 986-6050