公开(公告)号：US5877639A

公开(公告)日：1999-03-02

申请号：US887607

申请日：1997-07-03

Applicant: Michel Porcher ,  Stephane Chesnais ,  Jean Desuche

Inventor： Michel Porcher ,  Stephane Chesnais ,  Jean Desuche

IPC: H03K3/037 ,  H03K3/72 ,  H03B19/00

CPC classification number: H03K3/037 ,  H03K3/72

Abstract: A duration and frequency programmable electronic integrated pulse generator comprises an initialization circuit driven by a reference clock signal and an initialization/comparison signal and producing m initialization values, and a periodic count value coded on n bits. An address decoder module produces write-control bits, while a bits comparison matrix including n.times.m comparison cells each including a RAM and CAM memory cell write-addressable by the write-control bits. Each CAM cell stores a bit CAM.sub.ij of an initialization value and produces a complemented value CAM.sub.ij .sym.BL.sub.i , each RAM memory cell of address i, j produces a masking value M.sub.ij, and each comparison cell produces a value HIT.sub.ij =(CAM.sub.ij .sym.BL.sub.i)+M.sub.ij. All the cells of the same line of rank j are coupled by an OR function and produce, each output S.sub.j, a programmed pulse represented by the equation: ##EQU1## according to a harmonic periodic signal of the periodic count value.

Abstract translation: 持续时间和频率可编程电子集成脉冲发生器包括由参考时钟信号和初始化/比较信号驱动并产生m个初始化值的初始化电路以及以n位编码的周期性计数值。 地址解码器模块产生写入控制位，而包括n×m个比较单元的比特比较矩阵，每个比较单元包括可由写入控制位写入的RAM和CAM存储器单元。 每个CAM单元存储初始化值的位CAMij，并产生补码值+ E，ovs CAMij（+）BLi + EE，地址i的每个RAM存储单元j产生掩蔽值Mij，并且每个比较单元产生一个值 HITij = + E，ov（CAMij（+）BLi）+ EE + Mij。 等级j的相同行的所有单元通过OR功能耦合，并且根据周期性计数值的谐波周期信号，产生由以下等式表示的编程脉冲：每个输出Sj：。