所以可以發現,整個Moore FSM事實上是由2塊的組合邏輯與1塊D-FF所構成,我們常聽到所謂的一段式、二段式與三段式FSM,事實上就是由這3個block排列組合而成。 Moore FSM各種coding style比較 為了要實際比較各種coding style,在此舉一個簡單的例子,若input w_i為連續2個clk為high,則output會在下1個clk產生周期為...
4、FSM Implementation 5、Coding Style for RTL 希望你写过一点点Verilog,对数字电路有一点点了解,如果完全没有请看DDCA教材的前五章 本篇文章将和大家讨论Verilog相关的东西。本篇文章不会手把手教你写Verilog,而是谈一些Verilog的注意事项,怎么去写好Verilog。看这篇文章之前你应该写过一定的Verilog,同时要有一定...
将之前的例子用Mealy FSM重新改写,原本在Moore FSM下,若input w_i为连续2个clk为high,则output会在下1个clk产生周期为1 T的high pulse,若改用Mealy FSM,则output会提早1个clk出现,如下图所示。 原本Moore FSM需要3个state,若改用Mealy FSM后,会只剩下2个state,接下来要用各种coding style来实现Mealy FSM。
$display("Bad FSM."); // synopsys translate_on default endcase Datapath 参考:Coding Guidelines for Datapath Synthesis. 有号数的计算:若有需要关于有号数的计算,应当利用Verilog 2001所提供的signed及$signed()机制。 input signed [7:0] a, b; output signed [15:0] o; assign o = a * b; or...
This page contains tidbits on writing FSM in verilog, difference between blocking and non blocking assignments in verilog, difference between wire and reg, metastability, cross frequency domain interfacing, all about resets, FIFO depth calculation,Typica
讲义-Verilog Coding Style Verilog Coding Styles For RTL Synthesis
Coding techniques in Verilog HDL of finite state machines (FSMs) for synthesis in field programmable gate arrays (FPGAs) are researched, and the choice problem the best FSM coding styles in terms of an implementation cost (area) and a performance (speed) are considered. The problem is solved...
In Verilog, there are three primary coding styles: Behavioral Coding: This style focuses on describing the system’s behavior without detailing its structure. It primarily uses constructs like always blocks and procedural assignments to model functionality, making it easier to conceptualize complex operat...
// encouraged `ASSERT_KNOWN(SelKnown_A, sel) always_comb begin out0 = '0; out1 = '0; unique case (sel) mode1: out0 = foo; mode2: out1 = bar; default: ; endcase end // optional, but more explicit // not always applicable `ASSERT(MainFsmCase_A, sel inside {mode0, mode1...
本文整理出幾種常見的多工器mux可合成的coding style,並深入探討其合成的結果。 Introduction 使用環境:NC-Verilog 5.4 + Debussy 5.4 v9 + Quartus II 8.1 (同一種coding style在不同synthesizer下會有不同的認知,甚至相同synthesizer不同版本也會不同,本文僅討論Quartus II 8.1下的實驗結果)。