A Novel Reconfigurable Rotation-Permutation Unit Research and Implementation

MA Chao; LI Wei; DAI Zi-bin; FENG Xiao

doi:10.3969/j.issn.0372-2112.2017.05.001

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A Novel Reconfigurable Rotation-Permutation Unit Research and Implementation

更新时间：2025-07-16

- A Novel Reconfigurable Rotation-Permutation Unit Research and Implementation
- Acta Electronica Sinica Vol. 45, Issue 5, Pages: 1025-1034(2017)
- 作者机构：
  
  1. 解放军信息工程大学,河南,郑州,450000
  2. 复旦大学集成电路国家重点实验室,上海,200433
  3. 解放军信息工程大学,河南,郑州,450000
  4. 复旦大学集成电路国家重点实验室,上海,200433
- 作者简介：
- 基金信息：
  
  National Natural Science Foundation of China (No.61404175)
- DOI：10.3969/j.issn.0372-2112.2017.05.001
  CLC： TP331.2
- Published Online：25 May 2017，
  
  Published：2017
- 稿件说明：
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MA Chao, LI Wei, DAI Zi-bin, et al. A Novel Reconfigurable Rotation-Permutation Unit Research and Implementation[J]. Acta Electronica Sinica, 2017, 45(5): 1025-1034.
DOI：

MA Chao, LI Wei, DAI Zi-bin, et al. A Novel Reconfigurable Rotation-Permutation Unit Research and Implementation[J]. Acta Electronica Sinica, 2017, 45(5): 1025-1034. DOI： 10.3969/j.issn.0372-2112.2017.05.001.

摘要

本文利用Inverse Butterfly/Butterfly多级动态网络的自重构特性，提出了一种针对循环移位操作的高速可重构控制信息生成算法，该算法不仅具有极高的并行性和较小的资源消耗，还首次将循环移位、双向循环移位和以2

（i=0，1，2）为位宽的短字循环移位等10余种不同类型的移位操作统一在一个算法中.并在此基础上，设计了一种新型可重构移位-置换单元.该单元在SMIC 65nm工艺完成了逻辑综合.实验结果表明，当该单元只实现循环移位时，与以往研究成果相比，频率提升了6.4%~12%，面积减小了22%~30%；当该单元实现多种移位操作时，频率下降约8.4%，但能够支持的移位操作类型是以往研究成果的2倍.

Abstract

In this paper

a high speed reconfigurable control bits generation algorithm for rotation shift operations is proposed.The algorithm utilizes self-reconfigurable characteristics of the Inverse Butterfly/Butterfly network

and it is highly parallelized and low-cost.Moreover

it also integrates more than 10 kinds of rotation shift operations together

including rotation shift

bidirectional rotation shift

and sub-word rotation shift based on a bit width of 2

(i=1

).Following this

a new high-speed reconfigurable rotation-permutation unit(HRRU)is developed and synthesized in SMIC 65-nm process.The results show that the proposed unit only containing rotation shift operations

enhances the

frequency by 6.4%~12% and reduces the area by 22%~30%

compared with previously proposed solutions.When achieving a variety of rotation shift operations

the frequency of our unit decreases by 8.4%.But it can support twice operations as many as previous designs.

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