n分频器 verilog_分频器设计——50MHZ(含verilog程序)
时间: 2024-01-16 18:46:32 浏览: 100
下面是一个简单的分频器的Verilog代码,可以将50MHz的时钟信号分频为1kHz的输出信号:
```
module clk_divider (
input clk,
output reg out
);
reg [31:0] count;
always @(posedge clk) begin
if (count == 50000) begin
count <= 0;
out <= ~out;
end else begin
count <= count + 1;
end
end
endmodule
```
这个代码使用一个计数器来计算时钟周期数,当计数器到达50000时,输出信号翻转。这样可以将50MHz的时钟信号分频为1kHz的输出信号。
注意,在这个代码中,输出信号必须定义为寄存器类型,因为它需要在时钟上升沿时更新。
相关问题
小数分频器vhdl实现_verilog 实现小数分频(小数分频器)代码
以下是一个基于VHDL的小数分频器的实现示例:
```vhdl
library IEEE;
use IEEE.STD_LOGIC_1164.ALL;
use IEEE.NUMERIC_STD.ALL;
entity fractional_divider is
Port ( clk : in STD_LOGIC;
reset : in STD_LOGIC;
numerator : in unsigned(31 downto 0);
denominator : in unsigned(31 downto 0);
frequency : out unsigned(31 downto 0));
end fractional_divider;
architecture Behavioral of fractional_divider is
signal div_counter : unsigned(31 downto 0) := (others => '0');
signal phase_accumulator : unsigned(31 downto 0) := (others => '0');
signal phase_increment : unsigned(31 downto 0) := (others => '0');
begin
process (reset, clk)
begin
if reset = '1' then
div_counter <= (others => '0');
phase_accumulator <= (others => '0');
phase_increment <= (others => '0');
frequency <= (others => '0');
elsif rising_edge(clk) then
div_counter <= div_counter + 1;
phase_accumulator <= phase_accumulator + phase_increment;
if div_counter = denominator then
div_counter <= (others => '0');
phase_accumulator <= phase_accumulator - denominator;
end if;
end if;
end process;
phase_increment <= numerator;
frequency <= phase_accumulator;
end Behavioral;
```
该代码实现了一个可配置的小数分频器,通过输入分子和分母,输出一个相对于输入时钟频率的分频频率。在时钟上升沿时,该分频器将累加一个相位增量,并在达到特定的相位值时输出一个时钟脉冲。实现中使用了两个计数器,一个用于计算相位累加器中的进位,另一个用于计算输出频率。
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