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。 r...
给出同步FIFO的Verilog描述: `timescale1ns/1ps//---// Design Name : syn_fifo// File Name : syn_fifo.v// Function : Synchronous (single clock) FIFO//---modulesyn_fifo(clk,// Clock inputrst,// Active high resetwr_cs,// Write chip selectrd_cs,// Read chipe selectdata_in,// Dat...
Synchronous clear:同步复位信号,用于清空FIFO。 此页面我们保持默认即可,然后点击“Next”。 图30‑132 同步FIFO IP核的配置步骤(三) 图30‑133为设置FIFO属性和使用资源的界面,其中: 框1需要重点注意,上面的是普通同步FIFO模式,当前读请求有效的下一拍数据才出来;而下面的则是先出数据FIFO模式,读请求来到之前...
// Synchronous reset. The rst_n is NOT in sensitive list. always @(posedge clk) begin if (~rst_n) begin xxx <= `INIT_VAL; end else begin xxx <= yyy; end end // Asynchronous reset. The rst_n IS in sensitive list. always @(posedge clk or negedge rst_n) ...
一个可以综合的Verilog 写的FIFO存储器 Synthesizable FIFO Model This example describes a synthesizable implementation of a FIFO. The FIFO depth and FIFO width in bits can be modified by simply changing the value of two parameters, `FWIDTH and `FDEPTH. For this example, the FIFO depth is 4 and...
y =2'd2;end// y has a default value so that this code will not generate a latchalways@(*)beginy =2'b00;if(x ==2'b10) y =2'd3;elseif(x ==2'b11) y =2'd2;end 2.Synchronous logic block Synchronous logic blocks are generated using special identifiers in the sensitivity list...
21.Timing Analysis does not support the analysis of latches as synchronous elements for the currently selected device family 原因:用analyze_latches_as_synchronous_elements setting可以让Quaruts II来分析同步锁存,但目前的器件不支持这个特性 措施:无须理会。时序分析可能将锁存器分析成回路。但并不一定分析正...
For UDP, IP, and ARP support, useudp_complete(1G) orudp_complete_64(10G/25G). Top level gigabit and 10G/25G MAC modules areeth_mac_*, with various interfaces and with/without FIFOs. Top level 10G/25G PCS/PMA PHY module iseth_phy_10g. Top level 10G/25G MAC/PCS/PMA combination...
Parametrizable demultiplexer axis_fifo.v : Parametrizable synchronous FIFO axis_fifo_adapter.v : FIFO/width adapter wrapper axis_frame_join.v : Parametrizable frame joiner axis_frame_length_adjust.v : Frame length adjuster axis_frame_length_adjust_fifo.v : Frame length adjuster with FIFO axis_ll...
我们实现的是read_cnt 和 write_cnt使用同一个时钟的情况,即synchronous FIFO; 关于async的实现,可以参考Advanced Digital Design With the Verilog HDL 2nd》chap9.7, async 考虑的则是跨时钟域通信的问题了。 代码如下: module fifo #( parameter WIDTH = 32, // data width is 32-bit parameter LOGDEPTH =...