[ibis-macro] Re: Input Clock questions for BIRD 123.x.x
- From: "Walter Katz" <wkatz@xxxxxxxxxx>
- To: <Arpad_Muranyi@xxxxxxxxxx>, <ibis-macro@xxxxxxxxxxxxx>
- Date: Tue, 23 Aug 2011 12:52:04 -0400 (EDT)
Arpad,
1. The model must assume that the reference clock is shifted in time from
the data by some unknown amount of time. The purpose of the reference
clock is to eliminate the effect of a frequency offset between the Tx and
the Rx.
2. The reference clock should start within a bit time of the start of the
simulation, and span the time domain of the input waveform (wave).
3. The reference clock must be terminated by a -1.
I think we should first decide whether we should be including this
feature.
Walter
-----Original Message-----
From: ibis-macro-bounce@xxxxxxxxxxxxx
[mailto:ibis-macro-bounce@xxxxxxxxxxxxx] On Behalf Of Muranyi, Arpad
Sent: Tuesday, August 23, 2011 11:47 AM
To: ibis-macro@xxxxxxxxxxxxx
Subject: [ibis-macro] Input Clock questions for BIRD 123.x.x
Walter, and All,
We also need to talk about questions on how the EDA tool can supply a
clock for the AMI model.
1) Do all rules we develop for outgoing clock also apply to
incoming one? For example, current spec says that sample
time is 1/2 bit after the clock. Perhaps, incoming clocks
should be used directly for synchronization.
2) Another story is about persistence of the clock value. We
allow, for example, that the output clock appears only after
many bits of simulation. Does this apply to input clock as
well? If yes, how?
3) Then, about termination with '-1'. Is it still the case?
What should be a model behavior if the incoming clocks do
not cover a piece of waveform completely?
Thanks,
Arpad
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