(r18) P10761201XWorkArea < P10761

P10761 Web>P10761201XWorkArea (revision 18) (raw view)~~EditAttach~~
---++ P1076.1-201X Revision

%TOC%
---+++ Scope of the Standard

This standard defines the IEEE 1076.1™ language, a hardware description language for the description and the simulation of analog, digital, and mixed-signal systems. Informally called VHDL-AMS, (VHSIC Hardware Description Language for Analog and Mixed-Signal, where VHSIC stands for Very High Speed Integrated Circuits), the language is built on the IEEE 1076™ (VHDL) language and extends it to provide capabilities of writing and simulating analog and mixed-signal models.
---+++ Purpose of the Standard

To support the design and verification of complex electronic systems containing a mixture of analog and digital devices, the IEEE 1076.1™ language provides, as an extension of the IEEE VHDL 1076 language, a comprehensive set of capabilities for the description and simulation of mixed-signal and mixed-technology systems.

The revision adds selected new features to the language definition of the 1076.1-2007 standard, and updates the 1076.1-2007 standard to reflect changes in the VHDL 1076-2008 specification.
---+++ New or Enhanced Functionality in IEEE Std 1076.1-201x

This revision of IEEE Std 1076.1-2007 includes the following:
   * [[ProjectsArea#Alignment_to_IEEE_Std_1076_2008][Alignment of IEEE Std 1076.1-2007 _Standard VHDL Analog and Mixed-Signal Extensions_ with IEEE Std 1076-2008 _Standard VHDL Language Reference Manual_ ]]
   * [[ProjectsArea#Integration_of_Packages_Defined][Integration of IEEE Std 1076.1.1-2008]] _Standard VHDL Analog and Mixed-Signal Extensions—Packages for Multiple Energy Domain Support_ into this revision. After adoption of this revision as an IEEE standard, 1076.1.1-2011 will be withdrawn.
As a result of this work, the draft standard now includes, in addition to the functionality present in 1076.1-2007, the following major functionality that was either inherited from 1076-2008 or 1076.1.1-2011, or gained by extending the 1076.1-2007 functionality along the lines drawn by 1076-2008:
   * VHPI; this support is restricted, as in 1076-2008, to the language constructs supported by IEEE Std 1076-2002
   * Standard tool directives, including protect tool directives that support [[ProjectsArea#IP_Protection][IP protection for VHDL-AMS]] source files
   * Enhanced generics. In addition to the corresponding definitions in VHDL-1008, this revision adds generic natures/subnatures
   * Extensions to the type system, including partially constrained array types and record types. Similar functionality has been defined for array natures and record natures.
   * External names, extended to support external terminal names and external quantity names

The changes in document organization in 1076-2008 required various modifications to the document structure of this revision. Specifically, all clauses were renumbered in 1076-2008 to conform to IEEE style requirements; the new numbering has been retained. In addition, the formerly separate clause defining _simultaneous statements_ has become part of the clause defining Architecture statements (in 1076-2008: Concurrent statements). At the same time, to increase clarity, 1076-2008 concurrent statements whose purpose is to define the design hierarchy have been grouped as _structural statements_, with _concurrent statements_ now referring to those statements that do not define design hierarchy. This is a change in classification only, no change was made to the definition of the statements itself.

This revision also includes selected new VHDL-AMS-specific functionality:
   * A new signal ASP_DONE that toggles its value each time an analog solution point (ASP) has been determined. This signal allows a model to perform actions at an ASP, for example writing the value of selected quantities to a file.
   * [[ProjectsArea#Frequency_Domain_Modeling_Champi][Support for limited modeling in the frequency domain]]. The use model supports, for example, defining the behavior of a design unit in the frequency domain by reading a complex transfer function from a file.
Several projects that were initially planned to be part of this revision did not get included in the end:
   * AMS extensions to VHPI. As mentioned above, VHPI support is restricted to the 1076-2002 language constructs.
   * [[ProjectsArea#Table_driven_Modeling_Champion_J][Package for Table-driven Modeling]]. This project was converted to an Open Source project
   * [[ProjectsArea#Vector_Matrix_Operations_Champio][Package for Vector-Matrix Operations]]. This project was converted to an Open Source project.
Finally, this revision fixes several issues present in [[ProjectsArea#Errata][IEEE Std 1076.1-2007]] or [[P107611Workarea#Errata][IEEE Std 1076.1-2011]].
---+++ Language Change Specifications

The LCSs for this language revision are available in a [[P10761201XLCSs][Member-only area]].
---+++ Standard Document

Alain Vachoux is the Editor for this revision of the language.

All files related to the development of the standard document are in a [[P10761201XLRMEditing][Member-only area]].
---+++ Machine-Readable Files

Machine-readable files include source code for the standard packages and VHPI-related files, including UML diagrams.

The machine-readable files are available [[P10761201XCollateral][here]].
---+++ Activities Related to Approval and Publication of the Revision

[[BallotFor201x][Private area related to ballot]]

   * A vote by the Working Group Members to approve the draft document for release to an IEEE ballot was initiated on February 12, 2017, with a 1-month duration to give people enough time to review the draft document. The draft document and the packages were made available to the WG members on a secure site. The vote was unanimous to approve the document.

   * Mandatory Editorial Coordination was initiated on March 18, 2017 and acknowledged by IEEE-SA on March 19. It ended on April 12, with an email indicating that no issue had been found.

   * The formation of the ballot pool was initiated on March 18, 2017 and started one day later. 14 people signed up:
<sticky>
<div style="margin-left: 5em;">
| *Classification* | *Count* | *Percentage* |
| Producers |  4 |  28% |
| Users |  4 |  28% |
| General Interest |  4 |  28% |
| Government |  1 |   7% |
| Service Provider |  1 |  7% |
| Total |  14 |  100% |
</div>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;The ballot pool is balanced as each class size is less than 1/3 of the pool and the members have 13 different affiliations.</sticky>

   * The ballot was initiated on May 2, 2017, and balloters were notified on May 3. At the close on June 2, 1017, at 11:59 pm EDT, the results were as follows:
<sticky>
<div style="margin-left: 5em;">
| *&nbsp;* | *Count* | *Percentage* | *Requirements* |
| Size of ballot pool |  14 |  100% |  &gt; 10&nbsp;&nbsp;&nbsp; |
| Votes returned |  14 |  100% |  &gt; 75% |
| Abstentions (lack of expertise) |  2 |  14% |  &lt; 30% |
| Non-abstention votes |  12 |  86% | |
|  Approve |  12 |  100% |  &gt; 75% |
|  Disapprove |  0 |  0% | |
</div>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Since the requirements are met, the ballot passes.</sticky>

   * No comments were returned by the balloters.

   * Public review ended on July 2, 2017. No comments were received.

   * The draft material was submitted to !RevCom on July 26, 2017.

   * !RevCom recommended approval of P1076.1 version D1.2 on September 6, 2017.

   * The IEEE-SA Standards Board approved the revision as IEEE Std 1076.1-2017 on September 28, 2017.

   * IEEE Std 1076.1™-2017 was published by IEEE-SA on January 24, 2018.

-- Main.ErnstChristen - 2013-05-06
Attachments
I	Attachment	Action	Size	Date	Who	Comment
txt	LRM_editing_workplan.txt	manage	2.7 K	2013-06-14 - 14:09	AlainVachoux	v1.1. Changed condition tag colors.
Topic revision: r1 - 2018-01-24 - 21:59:00 - TWikiGuest
P10761