动态参数模型确定SoC中异步FIFO深度的方法

New Method for Determining the Depth of Asynchronous FIFO in SoC Based on the Model of Dynamic Parameters

针对超大规模集成电路和片上系统设计中确定异步FIFO浓度的问题,根据异步FIFO运行时的属性提出FIFO动态参数模型,该模型包括FIFO饱和度、写入端和读出端数据传输率及上溢/下溢频率。在该模型的基础之上,分析异步FIFO的深度与动态参数之间的关系,采用功能仿真方法确定片上系统中异步模块之间数据传输所需FIFO的深度。对典型实例的分析表明,采用这种方法能够在保证系统数据通信性能的前提下,获得最小的FIFO深度,优化系统资源的使用。

Aimmig at determining the depth of asynchronous first-in first-out （FIFO） in very large scale integrated （VLSI） circuits and system on chip （SoC） a model of dynamic parameters based on the running-time attribute of the asynchronous FIFO is presented in this paper. This model contains FIFO saturation, writing reading rate and overflow/underflow rat through the function simulation. On the base of this model, the depth of asynchronous FIFO in system on chip （SoC） can be determined by analyzing the relationship between these dynamic parameters and the depth of FIFO through the function simulation. According to the typical example provided, using the presented method can effectively minimize the depth of FIFO and optimize the usage of resource.