// Expression is evaluated when the statement is encountered, and assignment is postponed until the // end of the simulation time-step. In a begin-end sequential statement group, execution of the next // statement is not blocked; and will be evaluated before the assignment is complete. In t...
inoutPAD, //pad load when pad configured as input outputregDOUT ); //input:(not effect pad external input logic), output: DIN->PAD assignPAD=OEN?'bz:DIN; //input:(PAD->DOUT) always@(*)begin if(OEN==1)begin//input DOUT=PAD; end elsebegin DOUT='bz; end end //use tristate g...
AI代码解释 modulescrambler_8bits(clk,rstb,data_in,k_in,disab_scram,data_out,k_out);//***input clk;input rstb;input[7:0]data_in;// input data to be scrambledinput k_in;// when 1, the input is a control character.// when 0, the data is regular datainput disab_scram;// when...
Procedural assignments occur within procedures such asalways,initial,taskandfunctionsand are used to place values onto variables. The variable will hold the value until the next assignment to the same variable. The value will be placed onto the variable when the simulation executes this statement at...
1、连续性赋值:assign 连续性赋值语句逻辑结构上就是将等式右边的驱动左边的结点。因此连续性赋值的目标结点总是综合成由组合逻辑驱动的结点。Assign语句中的延时综合时都将忽视。 2、过程性赋值: 过程性赋值只出现在always语句中。 阻塞赋值和非阻塞赋值就该赋值本身是没有区别的,只是对后面的语句有不同的影响。
//pad load when pad configured as input output reg DOUT ); //input:(not effect pad external input logic), output: DIN->PAD assign PAD = OEN? 'bz : DIN ; //input:(PAD->DOUT) always @(*) begin if (OEN == 1) begin //input ...
dst_req_state <= req_state_dly2 ;endend//Rising Edge of dst_state generate a dst_pulse;assigndst_pulse = (~dst_req_state) & req_state_dly2 ;//set sync ack when src_req = 1 , clear it when src_req = 0 ;always@(posedgedst_clkornegedgedst_rst_n)beginif(dst_rst_n ==1'b0...
后记:官方答案给的是assign z=(A[1:0]==B[1:0])。这使得代码更加简洁,功能也是一样的。 48.Simple circuit A 题目:Module A is supposed to implement the functionz = (x^y) & x. Implement this module. 大白话:写一个模块A,实现功能z = (x^y) & x ...
Verilog RTL优化策略(一):推荐使用assign语法替代if-else和case语法 参考<手把手教你设计CPU--RISC-V处理器篇> 先给出不用if-else和case的原因 Verilog中的if-else和case语法存在两大缺点: 不能传播不定态X: 会产生优先级的选择电路而非并行选择电路,从而不利于时序和面积: 情况一 Verilog 的if-else 不能...
You instance a module when you use that module in another, higher-level module. Ports Ports allow communication between a module and its environment. All but the top-level modules in a hierarchy have ports. Ports can be associated by order or by name. You declare ports to be input, outp...