fifo_buffer[wr_ptr_true] <= data_in;endend//将读指针的格雷码同步到写时钟域,来判断是否写满always@ (posedgewr_clkornegedgewr_rst_n)beginif(!wr_rst_n)beginrd_ptr_g_d1 <=0;//寄存1拍rd_ptr_g_d2 <=0;//寄存2拍endelsebeginrd_ptr_g_d1 <= rd_ptr_g;//寄存1拍rd_ptr_g_d2 ...
(rd_en) begin rd_pointer <= rd_pointer + 1; rd_data <= fifo_buffer[rd_pointer]; end end //wr_pointer and rd_pointer translate into gray code wire [$clog2(DATA_DEPTH) : 0] wr_ptr_g, rd_ptr_g; assign wr_ptr_g = wr_pointer ^ (wr_pointer >>> 1); assign rd_ptr_g =...
);logic[$clog2(FIFO_DEPTH)-1:0] wr_addr, rd_addr;logic[DATA_WIDTH-1:0] fifo_buffer[FIFO_DEPTH];//写地址时序逻辑always_ff@(posedgeclkornegedgerst_n)beginif(!rst_n)beginwr_addr <= '0;endelseif(!full && wr_en )begin//先读后写模式,所以写入的是加1前的wr_addrwr_addr <= wr_...
1 (*ram_style = "distributed"*) reg [DATA_WIDTH - 1 : 0] fifo_buffer[0 : DATA_DEPTH - 1]; 则使用分布式ram来搭建存储空间。 1 (*ram_style = "block"*) reg [DATA_WIDTH - 1 : 0] fifo_buffer[0 : DATA_DEPTH - 1]; 1. 2. 三、参考文献...
fifo_counter is incremented ifwrite takes place and buffer is not full and will be decremented id read takesplace and buffer is not empty. If both read and write takes place, counter willremain the same. fifo_counter写而未满时增加1,读而未空时减1。同时发生读写操作时,fifo_counter不变。
(*ram_style="block"*)reg[DATA_WIDTH-1:0]fifo_buffer[0:DATA_DEPTH-1]; 综合后的电路图如下,可见FIFO缓存区使用的资源为BLOCK RAM; 同时给出资源利用率报告: 可见存在BLOCK RAM ,由于我仅仅综合了一个同步FIFO,因此这个Block RAM一定是FIFO缓冲区消耗的。
mihir8181/VerilogHDL-Codes Star32 Code Issues Pull requests Synthesizable Verilog Source Codes(DUT), Test-bench and Simulation Results. counterfsmasynchronousverilogfifotestbenchesverilog-hdlverilog-programsmealy-machine-codemoore-machine-codeverilog-projectfifo-bufferverilog-coden-bit-aluverilogvalidationdesign...
一个更为合适的指针计数方式是采用格雷码方案。在格雷码的编码方案中,连续数值只有一位发生变化,这个特性可以用于跨时钟域矢量传递。这里就不多介绍二进制与格雷码之间的转换原理了,直接放上代码,下面是二进制转换为格雷码的Verilog通用实现代码: //---// File : binary_to_gray// Author : FFQ// Key Words :/...
fifo_counter is incremented ifwrite takes place and buffer is not full and will be decremented id read takesplace and buffer is not empty. If both read and write takes place, counter willremain the same. fifo_counter写而未满时增加1,读而未空时减1。同时发生读写操作时,fifo_counter不变。
rd_data<=fifo_buffer[rd_addr];rd_pointer<=rd_pointer;end end endmodule 2、仿真文件 改变clk_period_wr和clk_period_rd就可以实现读写快慢切换 代码语言:javascript 代码运行次数:0 运行 AI代码解释 `timescale 1ns / 1ns`define clk_period_wr50`define clk_period_rd 20 ...