TRAIN / TRAIN_DONE

[Penokie, George]

Formatted message: <a href="http://www.t10.org/cgi-bin/ac.pl?t=r&f=r1008040_f.htm">HTML-formatted message</a>

David,
If you are not already, you should be using SPL revision 7 as the area you
are looking at has had some cleaning up of the wording that should make it
clear.
For a TRAIN primitive sequence the transmitter is required to transmit 6
TRAIN primitives and for a TRAIN_DONE primitive sequence the transmitter is
required to transmit 6 TRAIN_DONE primitives. The transmitter is not allowed
to insert any deletable primitives during a TRAIN primitive sequence or a
TRAIN_DONE primitive sequence.
The receiver detects a TRAIN primitive sequence receiving 3 TRAIN primitives
and detects a TRAIN_DONE primitive sequence after receiving 3 TRAIN_DONE
primitives.
For a TRAIN pattern  the transmitter is required to transmit a TRAIN
primitive sequence (i.e., 6 TRAIN primitives) followed by 58 dwords of
scrambled encoded zeros.
For a TRAIN_DONE pattern  the transmitter is required to transmit a
TRAIN_DONE primitive sequence (i.e., 6 TRAIN_DONE primitives) followed by 58
dwords of scrambled encoded zeros.
Bye for now,
George Penokie
LSI Corporation
3033 41st St. NW
Suite 100
Rochester, MN 55901
507-328-9017
george.penokie at lsi.com
From: owner-t10 at t10.org [mailto:owner-t10 at t10.org] On Behalf Of Craig Stoops
Sent: Tuesday, August 03, 2010 8:56 PM
To: 'David Brewer'; t10 at t10.org
Subject: RE: TRAIN / TRAIN_DONE
Hi David,
A TRAIN_DONE pattern consists of a TRAIN_DONE sequence and 58 scrambled
dwords.
The TRAIN_DONE primitive is of type REDUNDANT (not TRIPLE or EXTENDED), thus
6 (not 3) are sent in a TRAIN_DONE primitive sequence.
This is per SAS 2R16, Table 112 and Table 106. So the answer is 6 TRAIN_DONE
+ 58 scrambled dwords.
Craig Stoops
ExpertIO, Inc - "Your Protocol Verification Experts"
www.expertio.com<<a href="http://www.expertio.com&gt">http://www.expertio.com&gt;
408-217-1901
-----Original Message-----
From: David Brewer [mailto:dbrewer at stec-inc.com]
Sent: Tuesday, August 03, 2010 5:12 PM
To: t10 at t10.org
Subject: TRAIN / TRAIN_DONE
A TRAIN or TRAIN_DONE pattern consists of 6 TRAIN or TRAIN_DONE primitives
followed by 58 dwords set to 00000000h and scrambled.
The question is, should the expected pattern be 6 consecutive TRAIN or 6
consecutive TRAIN_DONE primitives followed by 58 scrambled words, or a TRAIN
or TRAIN_DONE primitive sequence (only 3 consecutive dwords) followed by 58
scrambled dwords.
Technically, I believe it to be the latter, but I can see how it could be
interpreted to be the former.
Thanks,
David Brewer
STEC