本文介绍了一种集成电路芯片瞬时功率测量-采集-分析系统。这是一种基于普通设备搭建的软硬件结合的测试系统。文中详细介绍了系统的测量方案，以及系统组成和各部分的功能与实现，并给出了需要注意的细节。

集成电路的工作功率与其处理数据间的相关性是“功耗分析攻击”[1]的物理基础。本文分析了CMOS电路的状态和输入数据影响电路功耗的各种机制——其中考虑了静态电流、信号变化速率等因素，给出了一个动态CMOS逻辑门瞬态电流与数据间的相关关系模型。并由它推算基本逻辑门工作电流的信息量，与仿真结果进行了对比说明。本文主要结论包括：N型动态电路具有更高的安全性；次开启电流、短路电流同样可以泄漏数据信息；电源电流还可能泄漏上次运算和前级电路所处理数据的部分信息等。

In this paper, a novel algorithm called logic depth oriented (LDO) common subexpression elimination (CSE) is proposed. In order to avoid the increase of logic depth in circuit structure that may be caused by the application of some other CSE techniques, the process of common subexpressions eliminating of this algorithm is logic depth oriented and the realization of logic operators reuse will not lead to the increase of logic depth. A complete description of the LDO algorithm and the comparisons with several popular CSE algorithms are presented in this paper. Results of comparisons show that using this algorithm can realize the logic operators reuse efficiently, while the logic depth in circuit structure will maintain optimal. Application of this method in the multiplierless VLSI implementation of high-speed FIR filters or some other multiple constant multiplication (MCM) problems will contribute to the high performances in several aspects such as area, speed and power dissipation.

This paper describes a new scalable architecture of Montgomery modular multiplier (MMM) using our improved FIOS algorithm. This algorithm and architecture can manipulate operands of any precision (bit length) in dual field (prime field and binary field) and has the advantage of using relatively smaller latency (clock cycles) to complete one modular multiplication. Our architecture is reusable and has high performance with respect to latency, timing, area, etc.

本文提出了一种新的流水线处理器的功能验证方法。这种方法的主要思想是通过验证流水线处理器中所有寄存器的功能来验证处理器的功能。流水线处理器绝大部分是由同步电路组成的。同步电路的状态完全由寄存器的状态决定。因此如果能够保证每个寄存器功能正确就可以保证整个同步电路功能正确。对于流水线处理器来说，寄存器状态的变迁是由处理器的原始输入和寄存器本身状态决定的。原始输入包括控制信号如复位信号和数据输入如指令输入。如果把对每个寄存器的赋值操作转换成对控制信号和数据输入的操作，那么就可以生成一个验证序列，这个序列包括每个时钟周期控制信号和数据输入的值。有了这个序列就可以把目标设计和参考模型进行结果比较，从而验证目标设计功能是否正确。同时这种方法便于调试。