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Back Annotation and Delay Calculation

Introduction

Figure 1-2 Veritool simulation environment with an integrated delay calculation facility including optional back annotation functionality

Design database

 

 

Verilog HDL

Verilog HDL

 

 

library source

design source

Data

 

files

files

 

 

 

extraction

 

 

 

utility

 

 

 

 

Compilation

 

 

Back annotation file

Back annotation and

Veritool data

delay calculation

(physical

 

structure

 

parameters)

 

 

 

 

 

 

Simulation

 

Veritool

Prerequisites and Related Reading

Before reading this document, it is important that you understand several topics related to delay back annotation and delay calculation. A list of these topics is provided in Figure 1-3 on page 11 , along with references where further information can be obtained on each item. If necessary, please review the appropriate topic(s) before continuing with document.

Figure 1-3 Where to find prerequisite information

Topic

Reference

 

 

Verilog simulation and hardware description

Verilog-XL Reference Manual

language (HDL) syntax

 

PLI—overview of access routines and how to

PLI 1.0 User Guide and Reference

create user-defined system tasks

 

C programming

Any C reference manual or instructional

 

guide

October 2000

11

Product Version 3.2

Back Annotation and Delay Calculation

Introduction

Topic

Reference

 

 

ASIC cell-based design methodology

Introductory literature on cell-based design,

 

ASIC cell library data books

 

 

October 2000

12

Product Version 3.2

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