All,
The IBIS Parser (or any EDA tool for that matter) can generate a
spreadsheet report for each group that describes the Model Interfaces for
each pin. This can be done for the models in Groups that satisfy either
Bob's or my rules. It is a simple graphical way of describing what models
can be in a Group.
The enclosed spreadsheet is an example of such a report with all possible
legal Interface combinations using my rules for the two Group Types in my
proposal (Component, Bare-Die). This example report reports for each
signal pin only victim usage, I did not include Aggressor columns for info
if the pin appears in Models as an Aggressor.
Walter
Walter Katz
<mailto:wkatz@xxxxxxxxxx> wkatz@xxxxxxxxxx
978.461-0449 x 133
Mobile 303.335-6156
From: Walter Katz [mailto:wkatz@xxxxxxxxxx] ;
Sent: Wednesday, December 6, 2017 12:28 PM
To: 'IBIS-Interconnect' <ibis-interconn@xxxxxxxxxxxxx>; IBIS-ATM
<ibis-macro@xxxxxxxxxxxxx>
Subject: One Page Functionality of My Group Set Rules in Bullet Form
All,
Features of my Group/Set proposal in bullet form
* An interconnect "Model" "Interface" is either between Pin/Buffer,
Pin/Pad or Pad/Buffer.
* A Set contains a list of Models that have a logical association
(e.g.)
* All models in a bus (e.g.. DDR4, or PCIeG3)
* PDN Network
* All I/O models between Pad and Pin
* All I/O models between Buffer and Pad
* All uncoupled models
* All coupled models
* A Group has a list of Sets.
* Therefor a Group has a list of Models derived from the list of
Sets in the Group
* A [Component] can have one or more Groups.
* The User/EDA tool selects one Group for generating interconnect
models for a simulation.
* Group Types
* Component
* The interconnect is between buffer and pins.
* Buffers and Pads are shorted if there is a Pin/Pad Model but no
Pad/Buffer Model for an I/O or rail.
* Use a legacy Pin/Pad model If there is a Buffer/Pad model and no
Pad/Pin model for an I/O or rail.
* Bare-Die
* Models in the Group can only be Pad/Buffer. This implies that all
of the Models in all of the Sets in the Group are Buffer/Pad.
* Errors in Model Compatibility within a Group
* All Models in a Bare-Die Group can only be Pad/Buffer
* I/O pin_name rules
* Two Models cannot have the same Victim Pin Pin_name
* Two Models cannot have the same Victim Buffer Pin_name
* Rail rules
* The following rules apply to models that define rail connections
Pin/Buffer, Pin/Pad or Pad/Buffer. They do not apply to models when a rail
is only on one terminal to supply a reference voltage
* Two models cannot have the same pin rail connection.
* Two models cannot have the same buffer rail connection.
* Warnings in Model Compatibility within a Group
* I/O pin_name rules (include both Aggressor and Victim terminals.
* Two Models cannot have the same Pin Pin_name.
* Two Models cannot have the same Buffer Pin_name.
* No need to report warnings if already reported as errors.
Walter
Walter Katz
<mailto:wkatz@xxxxxxxxxx> wkatz@xxxxxxxxxx
978.461-0449 x 133
Mobile 303.335-6156
Attachment:
Group_Usage_Report.xlsx
Description: application/vnd.openxmlformats-officedocument.spreadsheetml.sheet
