Verilog:开始后跟冒号和变量是什么意思 [英] Verilog: what does begin followed by colon and a variable mean

问题描述

data_mux 在这里是什么意思?它只是块的名称吗?

What does data_mux mean here? Is it just a name for the block?

if ((PORT_CONFIG == "32") && (P0 == 1'b1))
begin : data_mux
...
end

推荐答案

这些是块名称.特别适用于生成块.例如，您可以定义一个生成块，例如

These are block names. Especially useful with generate blocks. For example you can define a generate block such as

genvar i;
generate (for i = 0; i<10; i++)
begin : structures
    reg my_reg;
    // ...
    .. other block descriptions
    // ...
end
endgenerate

然后你可以稍后访问块元素

Then you can access the block elements later like

structures[3].my_reg <= 1'b1;

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