FIFO(First In First Out),是一种先进先出的数据缓存器,它与普通存储器的区别是没有外部读写地址线,这样使用起来非常简单,但缺点就是只能顺序写入数据,顺序的读出数据,其数据地址由内部读写指针自动加1完成,不能像普通存储器那样可以由地址线决定读取或写入某个指定的地址。 二、应用: 异步时钟数据传输 不同宽度...
Here is an example to explain howFIFO uses the memory. This is a fifo of length 8, WP and RP are the locationswhere write pointer and read pointer points. Shaded area in the diagram isfilled with data. When ever FIFO counter becomes zeroor BUF_LENGTH, empty or full flags will be set...
一个可以综合的Verilog-写的FIFO存储器 一个可以综合的Verilog写的FIFO存储器 Synthesizable FIFO Model This example describes a synthesizable implementation of a FIFO. The FIFO depth and FIFO width in bits can be modified by simply changing the value of two parameters, `FWIDTH and `FDEPTH. For ...
Generally fifos are implementedusing rotating pointers. We can call write and read pointers of a FIFO as headand tail of data area. Initially read and write pointers of the FIFO will pointto the same location Here is an example to explain howFIFO uses the memory. This is a fifo of lengt...
一个可以综合的Verilog写的FIFO存储器 SynthesizableFIFOModel ThisexampledescribesasynthesizableimplementationofaFIFO.TheFIFOdepthandFIFOwidthinbitscanbemodifiedbysimplychangingthevalueoftwoparameters,`FWIDTHand`FDEPTH.Forthisexample,theFIFOdepthis4andtheFIFOwidthis32bits.Theinput/outputportsoftheFIFOareshowninFigure...
RISC-V(跟我读:“risk---five”)是一个基于精简指令集(RISC)原则的开源指令集架构(ISA)。 这里要明确两个概念:指令集规范(Specification)和处理器实现(Implementation)是两个不同层次的概念,要区分开。指令集(ISA)是规范标准,往往用一本书或几张纸来记录描述,而处理器实现是基于指令集规范完成的源代码。RISC...
Example:importhdl('fifo.v',Language="Verilog")imports the Verilog filefifo.vand generates the corresponding Simulink modelfifo.slx. Top-level module name in the HDL code, specified as a character vector. This name becomes the name of the top-levelSubsystemfrom which HDL import constructs the hi...
RAM可以通过以下方式初始化: 1,在HDL源代码中指定RAM初始内容; 2,在外部数据文件中指定RAM初始内容。 Verilog Coding Example:
module mactx_32x128_fifo #( parameter WIDTH=128, parameter DEEPTH=32 ) ( input wclk, ... input rclk, ... ) ... ... ram_1r1w #( .width(WIDTH), .deepth(DEEPTH) ) ram_1r1w_u0 ( .wclk(wclk), .wen(write_en), .waddr(waddr), .wd...
纯verilog构建异步fifo,附带仿真脚本。读写端口各有一组时钟、读写使能、读写端口、满空指示、fifo使用量。源码结构清晰,注释完备,易于理解。