基本设计完成多路数据选择器实验
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# 多路数据选择器
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## 一、实验介绍
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多路数据选择器（Multiplexer，简称 MUX）是一种数字电路组件，用于从多个输入数据信号中选择一个输出数据信号。它根据选择信号的值，将其中一个输入信号传递到输出。一个有 2*n* 输入端的数据选择器有 _n_ 个可选择的输入－输出线路，可以通过控制端来选择其中一个信号被选择作为输出。
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本实验介绍如何使用 Verilog 编写多路数据选择器。
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## 二、实验目的
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1. 理解多路数据选择器的原理和功能。
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2. 学会使用 Verilog 描述多路数据选择器的行为。
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3. 掌握 Verilog 仿真工具的使用，验证多路数据选择器的正确性。
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## 三、实验要求
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1. 使用 Verilog 描述多路数据选择器的行为。
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2. 通过所有测试点。
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## 四、实验步骤
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这里我们以四选一多路选择器举例：
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### 1. 框图
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<img src="多路数据选择器.assets/框图.svg" style="zoom:150%;" />
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- `A` 、`B` 、`C` 和 `D`是输入端口，表示输入的数据。
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- `S` 是选择端口，用于选择输入的数据。
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- `Y` 是输出端口，输出被选中的数据。
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### 2. 真值表
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<img src="多路数据选择器.assets/真值表.png" style="zoom:;" />
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在S分别取0、1、2、3的时候Y分别输出A、B、C、D的值。
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### 3. 顶层模块
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```verilog
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module Mux4 #(
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parameter DATA_WIDTH = 8,
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parameter SELECT_WIDTH = $clog2(4) // $clog2(x)返回大于等于log2(x)的最小整数
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) (
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input wire [DATA_WIDTH - 1: 0] A,
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input wire [DATA_WIDTH - 1: 0] B,
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input wire [DATA_WIDTH - 1: 0] C,
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input wire [DATA_WIDTH - 1: 0] D,
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input wire [SELECT_WIDTH - 1: 0] S,
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output reg [DATA_WIDTH - 1: 0] Y
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);
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// TODO：你的代码实现
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endmodule
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```
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在上述代码中，顶层模块名为 `Mux4`，它有四个端口：
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- `A` 、`B` 、`C` 和 `D`是输入端口，表示输入的数据。
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- `S` 是选择端口，用于选择输入的数据。
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- `Y` 是输出端口，输出被选中的数据。
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其中我们使用了参数化的设计，这有利于我们对模块进行高效的拓展。
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请补充代码，完成多路数据选择器的设计，使得多路数据选择器的行为满足真值表。
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|
||||
<mxCell id="gzdv8FFXtKBTtcGOgYej-19" value="" style="edgeStyle=orthogonalEdgeStyle;rounded=0;html=1;exitX=0;exitY=0.75;exitDx=0;exitDy=0;exitPerimeter=0;strokeWidth=3;endArrow=none;endFill=0;" parent="gzdv8FFXtKBTtcGOgYej-1" source="gzdv8FFXtKBTtcGOgYej-3" target="gzdv8FFXtKBTtcGOgYej-20" edge="1">
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<mxGeometry relative="1" as="geometry">
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||||
<mxPoint x="52" y="165.1034482758621" as="targetPoint"/>
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||||
<mxPoint x="122" y="165" as="sourcePoint"/>
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</mxGeometry>
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</mxCell>
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||||
<mxCell id="gzdv8FFXtKBTtcGOgYej-20" value="<span style="">B</span>" style="text;html=1;strokeColor=none;fillColor=none;align=center;verticalAlign=middle;whiteSpace=wrap;rounded=0;fontStyle=1;fontSize=25;" vertex="1" parent="gzdv8FFXtKBTtcGOgYej-1">
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||||
<mxCell id="gzdv8FFXtKBTtcGOgYej-20" value="<span style="">B</span>" style="text;html=1;strokeColor=none;fillColor=none;align=center;verticalAlign=middle;whiteSpace=wrap;rounded=0;fontStyle=1;fontSize=25;" parent="gzdv8FFXtKBTtcGOgYej-1" vertex="1">
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||||
<mxGeometry y="150" width="60" height="30" as="geometry"/>
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||||
</mxCell>
|
||||
<mxCell id="gzdv8FFXtKBTtcGOgYej-21" value="S" style="text;html=1;strokeColor=none;fillColor=none;align=center;verticalAlign=middle;whiteSpace=wrap;rounded=0;fontStyle=1;fontSize=25;" vertex="1" parent="gzdv8FFXtKBTtcGOgYej-1">
|
||||
<mxCell id="gzdv8FFXtKBTtcGOgYej-21" value="S" style="text;html=1;strokeColor=none;fillColor=none;align=center;verticalAlign=middle;whiteSpace=wrap;rounded=0;fontStyle=1;fontSize=25;" parent="gzdv8FFXtKBTtcGOgYej-1" vertex="1">
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||||
<mxGeometry x="529" y="15" width="60" height="30" as="geometry"/>
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</mxCell>
|
||||
<mxCell id="gzdv8FFXtKBTtcGOgYej-22" value="Cout" style="text;html=1;strokeColor=none;fillColor=none;align=center;verticalAlign=middle;whiteSpace=wrap;rounded=0;fontStyle=1;fontSize=25;" vertex="1" parent="gzdv8FFXtKBTtcGOgYej-1">
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||||
<mxCell id="gzdv8FFXtKBTtcGOgYej-22" value="Cout" style="text;html=1;strokeColor=none;fillColor=none;align=center;verticalAlign=middle;whiteSpace=wrap;rounded=0;fontStyle=1;fontSize=25;" parent="gzdv8FFXtKBTtcGOgYej-1" vertex="1">
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<mxGeometry x="549" y="76" width="60" height="30" as="geometry"/>
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</mxCell>
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<mxCell id="gzdv8FFXtKBTtcGOgYej-23" value="" style="group" vertex="1" connectable="0" parent="1">
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<mxCell id="gzdv8FFXtKBTtcGOgYej-23" value="" style="group" parent="1" vertex="1" connectable="0">
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<mxGeometry x="100" y="80" width="100" height="183" as="geometry"/>
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||||
</mxCell>
|
||||
<mxCell id="wTAwAFIw4sOWHSdyWEut-2" style="edgeStyle=none;html=1;exitX=0.25;exitY=0;exitDx=0;exitDy=0;fontColor=#000000;startArrow=block;startFill=1;endArrow=none;endFill=0;strokeColor=#000000;rounded=0;strokeWidth=2;" parent="gzdv8FFXtKBTtcGOgYej-23" source="wTAwAFIw4sOWHSdyWEut-1" edge="1">
|
||||
|
|
@ -420,11 +420,71 @@
|
|||
</root>
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||||
</mxGraphModel>
|
||||
</diagram>
|
||||
<diagram id="E8JmcAeOklZgZ2l8eJsL" name="第 3 页">
|
||||
<diagram id="E8JmcAeOklZgZ2l8eJsL" name="多路数据选择器">
|
||||
<mxGraphModel dx="696" dy="571" grid="1" gridSize="10" guides="1" tooltips="1" connect="1" arrows="1" fold="1" page="1" pageScale="1" pageWidth="1169" pageHeight="827" math="0" shadow="0">
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||||
<root>
|
||||
<mxCell id="0"/>
|
||||
<mxCell id="1" parent="0"/>
|
||||
<mxCell id="uB0_w7AT7cy0_k-z_mVM-15" value="" style="group" parent="1" vertex="1" connectable="0">
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<mxGeometry x="47" y="90" width="326" height="195" as="geometry"/>
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||||
</mxCell>
|
||||
<mxCell id="uB0_w7AT7cy0_k-z_mVM-1" value="MUX" style="shape=trapezoid;perimeter=trapezoidPerimeter;whiteSpace=wrap;html=1;fixedSize=1;rotation=90;strokeWidth=3;fontStyle=1;fontSize=22;" parent="uB0_w7AT7cy0_k-z_mVM-15" vertex="1">
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||||
<mxGeometry x="103" y="30" width="120" height="60" as="geometry"/>
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</mxCell>
|
||||
<mxCell id="uB0_w7AT7cy0_k-z_mVM-2" value="" style="endArrow=blockThin;html=1;rounded=0;strokeColor=#000000;fontFamily=Helvetica;fontSize=15;fontColor=#000000;endFill=1;strokeWidth=3;" parent="uB0_w7AT7cy0_k-z_mVM-15" edge="1">
|
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<mxGeometry width="50" height="50" relative="1" as="geometry">
|
||||
<mxPoint x="63" y="16" as="sourcePoint"/>
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<mxPoint x="133" y="16" as="targetPoint"/>
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</mxGeometry>
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</mxCell>
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||||
<mxCell id="uB0_w7AT7cy0_k-z_mVM-3" value="" style="endArrow=blockThin;html=1;rounded=0;strokeColor=#000000;fontFamily=Helvetica;fontSize=15;fontColor=#000000;endFill=1;strokeWidth=3;" parent="uB0_w7AT7cy0_k-z_mVM-15" edge="1">
|
||||
<mxGeometry width="50" height="50" relative="1" as="geometry">
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<mxPoint x="63" y="45" as="sourcePoint"/>
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||||
<mxPoint x="132.99999999999994" y="45" as="targetPoint"/>
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</mxGeometry>
|
||||
</mxCell>
|
||||
<mxCell id="uB0_w7AT7cy0_k-z_mVM-4" value="" style="endArrow=blockThin;html=1;rounded=0;strokeColor=#000000;fontFamily=Helvetica;fontSize=15;fontColor=#000000;endFill=1;strokeWidth=3;" parent="uB0_w7AT7cy0_k-z_mVM-15" edge="1">
|
||||
<mxGeometry width="50" height="50" relative="1" as="geometry">
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||||
<mxPoint x="63" y="72" as="sourcePoint"/>
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<mxPoint x="132.99999999999994" y="72" as="targetPoint"/>
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</mxGeometry>
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</mxCell>
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<mxCell id="uB0_w7AT7cy0_k-z_mVM-5" value="" style="endArrow=blockThin;html=1;rounded=0;strokeColor=#000000;fontFamily=Helvetica;fontSize=15;fontColor=#000000;endFill=1;strokeWidth=3;" parent="uB0_w7AT7cy0_k-z_mVM-15" edge="1">
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<mxGeometry width="50" height="50" relative="1" as="geometry">
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<mxPoint x="63" y="100" as="sourcePoint"/>
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<mxPoint x="132.99999999999994" y="100" as="targetPoint"/>
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</mxGeometry>
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</mxCell>
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<mxCell id="uB0_w7AT7cy0_k-z_mVM-7" value="" style="endArrow=blockThin;html=1;rounded=0;strokeColor=#000000;fontFamily=Helvetica;fontSize=15;fontColor=#000000;endFill=1;strokeWidth=3;" parent="uB0_w7AT7cy0_k-z_mVM-15" edge="1">
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<mxGeometry width="50" height="50" relative="1" as="geometry">
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<mxPoint x="193" y="59.81" as="sourcePoint"/>
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<mxPoint x="262.99999999999994" y="59.81" as="targetPoint"/>
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</mxGeometry>
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</mxCell>
|
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<mxCell id="uB0_w7AT7cy0_k-z_mVM-8" value="" style="endArrow=blockThin;html=1;rounded=0;strokeColor=#000000;fontFamily=Helvetica;fontSize=15;fontColor=#000000;endFill=1;strokeWidth=3;entryX=1;entryY=0.5;entryDx=0;entryDy=0;" parent="uB0_w7AT7cy0_k-z_mVM-15" target="uB0_w7AT7cy0_k-z_mVM-1" edge="1">
|
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<mxGeometry width="50" height="50" relative="1" as="geometry">
|
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<mxPoint x="163" y="170" as="sourcePoint"/>
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<mxPoint x="197.99999999999994" y="150" as="targetPoint"/>
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||||
</mxGeometry>
|
||||
</mxCell>
|
||||
<mxCell id="uB0_w7AT7cy0_k-z_mVM-9" value="[7:0] A" style="text;html=1;align=center;verticalAlign=middle;resizable=0;points=[];autosize=1;strokeColor=none;fillColor=none;fontSize=15;fontStyle=1" parent="uB0_w7AT7cy0_k-z_mVM-15" vertex="1">
|
||||
<mxGeometry width="70" height="30" as="geometry"/>
|
||||
</mxCell>
|
||||
<mxCell id="uB0_w7AT7cy0_k-z_mVM-10" value="[7:0] B" style="text;html=1;align=center;verticalAlign=middle;resizable=0;points=[];autosize=1;strokeColor=none;fillColor=none;fontSize=15;fontStyle=1" parent="uB0_w7AT7cy0_k-z_mVM-15" vertex="1">
|
||||
<mxGeometry y="30" width="70" height="30" as="geometry"/>
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</mxCell>
|
||||
<mxCell id="uB0_w7AT7cy0_k-z_mVM-11" value="[7:0] C" style="text;html=1;align=center;verticalAlign=middle;resizable=0;points=[];autosize=1;strokeColor=none;fillColor=none;fontSize=15;fontStyle=1" parent="uB0_w7AT7cy0_k-z_mVM-15" vertex="1">
|
||||
<mxGeometry y="57" width="70" height="30" as="geometry"/>
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||||
</mxCell>
|
||||
<mxCell id="uB0_w7AT7cy0_k-z_mVM-12" value="[7:0] D" style="text;html=1;align=center;verticalAlign=middle;resizable=0;points=[];autosize=1;strokeColor=none;fillColor=none;fontSize=15;fontStyle=1" parent="uB0_w7AT7cy0_k-z_mVM-15" vertex="1">
|
||||
<mxGeometry y="84" width="70" height="30" as="geometry"/>
|
||||
</mxCell>
|
||||
<mxCell id="uB0_w7AT7cy0_k-z_mVM-13" value="[7:0] Y" style="text;html=1;align=center;verticalAlign=middle;resizable=0;points=[];autosize=1;strokeColor=none;fillColor=none;fontSize=15;fontStyle=1" parent="uB0_w7AT7cy0_k-z_mVM-15" vertex="1">
|
||||
<mxGeometry x="256" y="44" width="70" height="30" as="geometry"/>
|
||||
</mxCell>
|
||||
<mxCell id="uB0_w7AT7cy0_k-z_mVM-14" value="[1:0] S" style="text;html=1;align=center;verticalAlign=middle;resizable=0;points=[];autosize=1;strokeColor=none;fillColor=none;fontSize=15;fontStyle=1" parent="uB0_w7AT7cy0_k-z_mVM-15" vertex="1">
|
||||
<mxGeometry x="128" y="165" width="70" height="30" as="geometry"/>
|
||||
</mxCell>
|
||||
</root>
|
||||
</mxGraphModel>
|
||||
</diagram>
|
||||
|
|
|
|||
Loading…
Reference in New Issue