Subject: DC-WG: 6/20 meeting minutes
From: Mark Hahn (mhahn@cadence.com)
Date: Tue Jun 27 2000 - 06:30:31 PDT
Meeting minutes from the 6/20/00 DC-WG teleconference
-----------------------------------------------------
Attendees:
Mark Hahn, Cadence
Paul Bonnel, Cadence
Tom Dewey, Mentor
Bob Dilly, IBM
Vikas Sharma, IBM
New action items:
Who When What
---------- ------ --------
1. Mark 6/27 Check on absolute versus increment semantics
for clock_uncertainty
2. Mark 6/27 Create a list of additional commands which
could use -absolute and -increment or -worst
Open action items:
Who When What
---------- ------ --------
1. Mark 6/20 Check on semantics for clock waveforms with
-> 6/27 edges shifted by one or more cycles from equivalent
minimum edge times
2. Bob 6/20 Prepare waveform diagrams for waveform and
-> 6/27 derived_waveform
3. Mark 6/20 Check on phase shift in derived_waveform
-> 6/27 (effect on ideal edge position versus effective
edge position)
4. Mark 6/20 Check whether derived_waveform frequency adjustments
-> 6/27 can be real numbers
Next Meeting:
The next meeting will be a teleconference on 6/27/00
from 10-12 am (PDT)
Details:
1. DAC reports
Not much feedback from Kent Moffet and Karla Reynolds.
2. Action items
Bob and Mark both deferred their action items to 6/27; Bob
made some progress on the waveform diagrams but didn't finish yet.
3. Terminology and clock_required_time
We reviewed and approved the Basic Terminology section with
no changes. We made minor changes to the clock_required_time
semantics description.
4. derived_clock
We agreed to merge the derived_clock functionality into the
clock command by adding options for specifying the parent
clock root as a port or pin. The parent clock root is used
in automatically calculating the actual phase shift between
the parent clock root and the derived clock root.
5. clock_uncertainty
We agreed to use -from/-to instead of -source/-target, for
consistency with the disable command. We also changed the
value type to a list of one or two values (early and late),
and tentatively changed the default semantics to -increment,
pending Mark's action item.
Thanks,
Mark
-- Mark Hahn phone: (408) 428-5399 Senior Architect fax: (408) 894-3479 Cadence Design Systems email: mhahn@cadence.com
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