David,
I think you are expressing the need correctly, I am just trying to tell
you what you can do within the standard, what is going on in the standard
to support what you want and also what you can do in the meantime.
I think your "C_block" is one approach, but that reminds me of the C_comp
Subckt BIRD that is currently under consideration that would allow you to
define a "C_block" within the standard.
I also can understand the need and urgency for you, as a model supplier,
to be able to release "standard" models as quickly as possible, and the
need for EDA companies to support these "standard" models on a timely
basis.
What I suggest that you do is move to Un-Table the C_comp Subckt BIRD in
IBIS-ATM, and push it forward. I personally think the BIRD is ready for
Prime Time, and could be approved by the Open Forum quickly. Once approved
by the IBIS Open Forum, SiSoft would commit to supporting this feature
ASAP, before the next version of IBIS is approved by the Open Forum, and
before the IBIS Parser that will support his feature is available. The
market will determine if other EDA tools follow suit.
In my opinion, there is nothing more important for IBIS to proceed with
than this.
Walter
-----Original Message-----
From: David Banas [mailto:capn.freako@xxxxxxxxx] ;
Sent: Sunday, April 3, 2016 11:10 AM
To: Walter Katz <wkatz@xxxxxxxxxx>
Cc: Bob Ross <bob@xxxxxxxxxxxxxxxxx>; ibis-macro@xxxxxxxxxxxxx
Subject: Re: [ibis-macro] Re: Terminator still illegal for AMI?
Hi Walter,
Thanks for the response.
Please, see below, in-line.
Thanks,
-db
On Apr 3, 2016, at 7:51 AM, Walter Katz <wkatz@xxxxxxxxxx> wrote:
David,Yes, that's correct. I'm talking about a series capacitor connected
I assume you are talking about an on-die blocking cap, as opposed to a
blocking cap in the package or board interconnect.
1.) I don't want to invoke S-parameters, as I'm comfortable with a lumped
For an on-die blocking cap, one can to do this is an on-die
s-parameter, or just assume it does not exists since a blocking cap is
a short at frequencies of interest in AMI modeling.
Okay, thanks. I'll familiarize myself with that effort. However, this is
The new interconnect BIRD will allow you to define blocking caps in
either the on-die interconnect, or package interconnect.
If you're talking about tool-specific pseudo-comment style augmentation,
I assume that there are other EDA tools besides ours that allow the
user to define package and on-die subckts that are either s-parameter
or SPICE
(IBIS-ISS) subckts that contain blocking caps.
I don't think so; at least, not completely. But, I do appreciate the
Does this answer your question?
Series_switch.
Walter
-----Original Message-----
From: ibis-macro-bounce@xxxxxxxxxxxxx
[mailto:ibis-macro-bounce@xxxxxxxxxxxxx] On Behalf Of David Banas
Sent: Sunday, April 3, 2016 10:14 AM
To: Bob Ross <bob@xxxxxxxxxxxxxxxxx>
Cc: ibis-macro@xxxxxxxxxxxxx
Subject: [ibis-macro] Re: Terminator still illegal for AMI?
Thanks, Bob!
What is, currently, the preferred way of representing a d.c. blocking
capacitor in the signal path of a Rx model, assuming I'm okay with a
lumped element representation?
Thanks,
-db
On Apr 3, 2016, at 7:04 AM, Bob Ross <bob@xxxxxxxxxxxxxxxxx> wrote:
Hi David,a
Yes, Terminator is illegal. According to the [Algorithmic
Model]/[End Algorithmic Model] Usage Rules (Section 10.1):
Usage Rules: The [Algorithmic Model] keyword must be positioned within
[Model] section and it may appear only once for each [Model] keyword
in a .ibs file. It is not permitted under the [Submodel] keyword or
in [Model]s which are of Model_type Terminator, Series or
Bob
-----Original Message-----
From: ibis-macro-bounce@xxxxxxxxxxxxx
[mailto:ibis-macro-bounce@xxxxxxxxxxxxx] On Behalf Of David Banas
Sent: Sunday, April 03, 2016 6:38 AM
To: ibis-macro@xxxxxxxxxxxxx
Subject: [ibis-macro] Terminator still illegal for AMI?
Hi all,
Is Terminator still an illegal model type for AMI Rx models?
Thanks,
-db