Closed-Form Bounds for Interconnect-Aware Minimum-Delay Gate Sizing

نویسندگان

  • Giorgos Dimitrakopoulos
  • Dimitris Nikolos
چکیده

Early circuit performance estimation and easy-to-apply methods for minimum-delay gate sizing are needed, in order to enhance circuit’s performance and to increase designers’ productivity. In this paper, we present a practical method to perform gate sizing, taking also into account the contribution of fixed wiring loads. Closed-form bounds are derived and a simple recursive procedure is developed that directly calculate the gate sizes required to achieve minimum delay. The designer, using the proposed method, can easily compare different implementations of the same circuit and explore the energy-delay design space, including in the analysis the effect of interconnect.

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Unified Logical Effort - A Method for Delay Evaluation and Minimization in Logic Paths With RC Interconnect

A model for delay evaluation and minimization in paths composed of logic gates and RC wires is presented. The method, Unified Logical Effort (ULE), provides closed-form conditions for timing optimization while overcoming the breakdown of standard logical effort (LE) rules in the presence of interconnect. The ULE delay model unifies the problems of gate sizing and repeater insertion: In cases of...

متن کامل

Power-optimal Simultaneous Buffer Insertion/sizing and Wire Sizing

This paper studies the problems of minimizing power dissipation of an interconnect wire by simultaneously considering buffer insertion/sizing and wire sizing (BISWS). We consider two cases, namely minimizing power dissipation with optimal delay constraints, and minimizing power dissipation with a given delay penalty. We derive closed form optimal solutions for both cases. These closed form solu...

متن کامل

Unified Logical Effort—A Method for Delay Evaluation and Minimization in Logic Paths With Interconnect

The unified logical effort (ULE) model for delay evaluation and minimization in paths composed of CMOS logic gates and resistive wires is presented. The method provides conditions for timing optimization while overcoming the limitations of standard logical effort (LE) in the presence of interconnects. The condition for optimal gate sizing in a logic path with long wires is also presented. This ...

متن کامل

Performance optimization of VLSI interconnect layout

This paper presents a comprehensive survey of existing techniques for interconnect optimizationduring the VLSI physical design process, with emphasis on recent studies on interconnect design and optimization for high-performance VLSI circuit design under the deep submicron fabrication technologies. First, we present a number of interconnect delay models and driver/gate delay models of various d...

متن کامل

A Polynomial Time Optimal Algorithm for Simultaneous Bu er and Wire Sizing

An interconnect joining a source and a sink is divided into xed length uniform width wire segments and some adjacent segments have bu ers in between The problem we considered is to simultaneously size the bu ers and the segments so that the Elmore delay from the source to the sink is minimized Previously no polynomial time al gorithm for the problem has been reported in literature In this paper...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

عنوان ژورنال:

دوره   شماره 

صفحات  -

تاریخ انتشار 2005