Verilog(Sequential logic) 概念(sequential logic) 时序逻辑:任意时刻输出不仅与当前时刻的输入,而且还取决于电路原来的状态。 与组合逻辑不同,时序逻辑有时钟信号,复位信号 类型 ①触发器 always @(posedge clk) begin // 通过时钟的上升沿进行赋值 q<=d; end 在t0 时刻时,d 的值为 0,则 q 的值也为 0;...
Problem 98:Four-bit binary counter 设计一个 4it 的计数器,从 0-15,共 16 个周期,reset 是同步复位且复位为 0 module top_module ( input clk, input reset, // Synchronous active-h
Now what I want to know is how to implement such "complex" logic in Verilog (it is "complex" because it is sequential and takes more than one clock cycle, which is not exactly the most pleasant kind of thing to design with a hardware description language). The floating-point ...
Assume that you want to implement hierarchical Verilog code for this circuit, using three instantiations of a submodule that has a flip-flop and multiplexer in it. Write a Verilog module (containing one flip-flop and multiplexer) namedtop_modulefor this submodule. moduletop_module (inputclk,input...
Using Synthesis Attributes in XDC files Synthesis Attribute Propagation Rules Using Block Synthesis Strategies Overview Setting a Block-Level Flow Block-Level Flow Options HDL Coding Techniques Introduction Advantages of VHDL Advantages of Verilog Advantages of SystemVerilog Flip-Flops, Regis...
Lecture 5 Sequential Logic Design II (FSMs) Next stateis determined by thecurrent stateand theinputs. Two types of finite state machines differ in the output logic: 交通灯FSM逻辑电路 涉及知识:FSM, Encoding, SOP FSM State Encoding How do we encode the state bits?
I think you are thinking about ActiveHDL which does indeed come with a good set of tutorials for VHDL and Verilog. I guess I need to restate my question about the Altera code. In the architecture of an LED they have the line clk_en <= std_logic'('1'); and in th...
Combinational clock gating has been part of RTL synthesis tools for several years and has become dependable for optimizing for power. Very rarely do synthesis tools miss a combinational clock gating opportunity. Yet, in certain cases the self-assignment to a register uses complex logic (either span...
In this chapter we begin looking at sequential logic design. Sequential logic design differs from combinational logic design in that the outputs of the circuit depend not only on the current values of the inputs but also on the past values of the inputs.
This chapter describes the detail practical understanding about the sequential logic designs. RTL coding using Verilog is described in detail with the practical scenarios and concepts. The Verilog RTL for the flip-flops, latches, various counters, shift registers, and memories is covered with the ...