Differential operation oriented multiple-valued encoding and circuit realization for asynchronous data transfer

Tomohiro Takahashi, Naoya Onizawa, Takahiro Hanyu

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)

Abstract

This paper presents an asynchronous data transfer scheme using 2-color 2-phase dual-rail encoding based on a differential operation and its circuit realization. The proposed encoding enables seamless asynchronous data transfer without inserting a spacer, because each logic value is represented by two kinds of codewords with dual-rail, called "color" data. Since the difference x - x′ between components of a codeword (x, x′) becomes constant in every valid state, the data-arrival state can be detected by calculating the difference x - x′. From the viewpoint of circuit implementation, during the state transition, since the dual-rail x and x′ are denned so as to transit differentially, the compatibility with a comparator using a differential amplifier becomes high, which results in reduction of the cycle time. It is evaluated using HSPICE simulation with a 0.18μm CMOS technology that communication speed using the proposed dual-rail encoding becomes 1.4 times faster than that using conventional dual-rail encoding.

Original languageEnglish
Pages (from-to)1928-1934
Number of pages7
JournalIEICE Transactions on Electronics
VolumeE87-C
Issue number11
Publication statusPublished - 2004 Nov

Keywords

  • Delay-insensitive
  • Differential operation
  • Dual-rail encoding
  • Point-to-point communication

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Electrical and Electronic Engineering

Fingerprint Dive into the research topics of 'Differential operation oriented multiple-valued encoding and circuit realization for asynchronous data transfer'. Together they form a unique fingerprint.

Cite this