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三、ASIC的设计方法和设计过程在当前世界集成电路市场上,有85％的ASIC是数字电路,下面以数字电路为例,阐明ASIC的一般设计方法和设计过程。电路设计过程从确定电路功能及规范开始,直到产生制备掩膜版的数据带,可以分成四个阶段:系统设计、逻辑设计、线路设计、版图设计。前两部分也称为逻辑级设计,后两部分统称为物理级设计。整个设计过程是从定义、概念和要求开始,逐步具体化,最后产生实用版图数据,每一步设计完成之后都需要作验证工作,以确保设计的正确性。系统设计也称为结构设计,是根据电路的总体要求作模块设计,确定每个模块的功能和指标,确定模块
Third, the ASIC design and design process In the current world market, 85% of the ASIC is a digital circuit, the following digital circuits, for example, to clarify the ASIC design methods and the general design process. Circuit design process from the beginning to determine the function of the circuit and normative until the production of mask data tape, can be divided into four stages: system design, logic design, circuit design, layout design. The first two parts are also called logic-level designs, the latter two parts are collectively referred to as physical-level designs. The whole design process begins with definitions, concepts and requirements, and is gradually materialized. Finally, practical layout data is generated. After each design is completed, verification work needs to be done to ensure the correctness of the design. System design, also known as structural design, is based on the overall requirements of the circuit module design, to determine the function of each module and indicators to determine the module