Delays in Verilog

Feb 09, 2012

0 likes | 699 Views

Introduction. Delays are crucial in REAL simulationsPost-synthesis simulationPost-layout simulationFPGA counter-part: Post-P

Share Presentation

Embed Code

Link

lilly

Download Presentation

Delays in Verilog

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

Verilog

687 views • 11 slides

Delays in Latches

R. Q. P. S. Delays in Latches. A latch is a pair of cross-coupled inverters They can be NAND or NOR gates as shown Consider their behavior (each step is one gate delay in time) From R and S to P and Q stable condition is reached in three gate delays. R. S. Q. P. D. D. Q. Q. D. P.

448 views • 9 slides

Verilog

Verilog. AULA - 3. Introdução. Verilog é uma linguagem, como VHDL, largamente usada para descrever sistemas digitais, utilizada universalmente. Histórico : Inicialmente, Verilog era uma linguagem proprietária desenvolvida pela empresa Gateway.

589 views • 29 slides

Verilog

Verilog. 4-Value Logic. Four values: 0, 1, x, z. x: unknown value z: high impedance. Vectors. output [0:3] D; wire [7:0] SUM; indexing: D[3] slicing: SUM[5:2]. Decoder. Gate-level description nands and nots are grouped. //HDL Example 4-1

544 views • 6 slides

Verilog

Verilog. CPSC 321 Computer Architecture Andreas Klappenecker . Demux Example. 2-to-4 demultiplexer with active low. Demux: Structural Model. // 2-to-4 demultiplexer module demux1(z,a,b,enable); input a,b,enable; output [3:0] z; wire abar,bbar; not v0(abar,a), v1(bbar,b);

300 views • 19 slides

Verilog

November 10, 2012. Verilog. 2. Verilog. Hardware Description Language (HDL)like a programming language, but for hardwareDifferent concerns than for softwareConcurrency!!!Things happen in parallel Different data types Bits can be 0, 1, X, ZSpecific widthsSynthesizabilityAutomatically produc

446 views • 11 slides

Abstractions in Verilog

f1. a. a. nsel. f. f. f2. b. b. sel. sel. f = . a • sel’ + b • sel. Abstractions in Verilog. Structural Abstraction. module MUX (f, a, b, sel); output f; input a, b, sel; and #5 g1 (f1, a, nsel), g2 (f2, b, sel); or #5 g3 (f, f1, f2); not g4 (nsel, sel); endmodule.

304 views • 7 slides

Flight Delays

Flight Delays. Stine and Foster Problem 6 - 53. Summary Statistics All Observations. Explanatory Variable Departure Delay. Response variable arrival delay. Scatterplot Arrival Delay on Departure Delay. Linear Regression All Observations. Summary Statistics. All Observations.

372 views • 11 slides

Verilog

Verilog. Section 3.10 Section 4.5. Keywords. Keywords are predefined lowercase identifiers that define the language constructs Key example of keywords: module, endmodule , input, output, and wire. assign.

508 views • 30 slides

Verilog

Verilog . ICT- SoC Lab. SOC Design Flow. Today (Language-based design ). In past (Schematic-based design). Source : Dynalith System. SOC Design Flow. Source : Dynalith System. HDL. Language-based design. Easy to design. Easy to simulate. Easy to reuse. Schematic-based design.

647 views • 34 slides

Verilog

Verilog. Data Types. A wire specifies a combinational signal. A reg (register) holds a value, which can vary with time. A reg need not necessarily correspond to an actual register in an implementation, although it often will. constants.

306 views • 13 slides

Verilog

Verilog. Matt Tsai. Verilog Application Introduction to Cadence Simulators Sample Design Lexical Conventions in Verilog Verilog Data Type and Logic System Structural Modeling Modeling Delay Using Compiler Controls Verilog Operators Behavioral Modeling Support for Verification

882 views • 37 slides

Delays in Packet Networks

Delays in Packet Networks. Packet Switch. Fixed-capacity links Variable delay due to waiting time in buffers Delay depends on Traffic Scheduling. Traffic Arrivals. Peak rate. Frame size. Mean rate. Frame number. First-In-First-Out. Static Priority (SP). Blind Multiplexing (BMux):

729 views • 61 slides

Verilog

Verilog. Hierarchical Design. 4-bit adder in terms of full-adders Full-adders in terms of half-adders Half-adders in terms of gates. //HDL Example 4-2 //----------------------------------------------- //Gate-level hierarchical description of 4-bit adder

926 views • 19 slides

Programming in Verilog

Programming in Verilog. CPSC 321 Computer Architecture Andreas Klappenecker. Verilog Sources. Verilog Quickstart by James M. Lee 3rd edition, Kluwer, 2002 contains Silos simulator gives a quick overview does not cover all language features programming style somewhat dated.

381 views • 18 slides

Delays in Packet Networks

Delays in Packet Networks. Getting a Grip on. Jorg Liebeherr Almut Burchard Dept. of ECE Dept. of Mathematics University of Toronto. Packet Switch. Fixed-capacity links Variable delay due to waiting time in buffers Delay depends on Traffic Scheduling. Traffic Arrivals.

813 views • 65 slides

Verilog

Verilog. The Verilog Language. Originally a modeling language for a very efficient event-driven digital logic simulator Later pushed into use as a specification language for logic synthesis Now, one of the two most commonly-used languages in digital hardware design (VHDL is the other)

1.42k views • 76 slides

Verilog

Verilog. Digital Computer Logic Kashif Bashir WWW: http//:www.kashifpaf.greatnow.com Email: kashif@pafkiet.edu.pk. Module Outline. What is Verilog? Verilog modules Types of Verilog Code Verilog simulators Example Verilog Code

1.65k views • 14 slides

Verilog

Verilog. Behavioral Description. initial: is executed once at the beginning. always: is repeated until the end of simulation. Clock Generation. Two methods: 15 cycles of clock. clock period = 20 time units. initial begin clock = 1’b0; repeat (30)

606 views • 14 slides

VERILOG

VERILOG. Monitoria Infra-Estrutura de Hardware 2011.2. Álvaro João – ajss Húgaro Bernardino – hbb Fred Rabelo - ferrf Leonardo Leandro – lsl2 Jéssica de Carvalho – jcb Silas Pedrosa - sfgp www.cin.ufpe.br/~if674cc. Histórico.

270 views • 17 slides

Delays in Verilog

Delays in Verilog. Introduction. Delays are crucial in REAL simulations Post-synthesis simulation Post-layout simulation FPGA counter-part: Post-P&R simulation Delay Models Represent different physical concepts Two most-famous models Inertial delay Transport delay. Delay Models.

488 views • 17 slides

Verilog

Verilog. Lenguaje de Descripción de Hardware. Gonzalo Saavedra Serra Cesar Muñoz Parraguez. Descripción por Módulos. Los módulos se pueden ver como cajas negras. Módulo. Módulo1. Módulo 4. Módulo 2. E1. S. E2. E1. S1. E2. S2. E3. S3. E4. Módulo 3. E3. E4. Describir un Módulo.

395 views • 12 slides

More Related