ECE 551: Digital System Design & Synthesis
|
|
- Steven Gibbs
- 6 years ago
- Views:
Transcription
1 ECE 551: Digital System Design & Synthesis Lecture Set 9 9.1: Constraints and Timing 9.2: Optimization (In separate file) 03/30/03 1 ECE Digital System Design & Synthesis Lecture Constraints and Timing Overview Constraint Concepts Constraint Classification Design Rule Constraints Optimization Constraints Defining timing paths and path delays Setting Constraints 03/31/03 2
2 Overview (continued) Signal Interface Constraints Drive characteristics for input ports Load characteristics on output ports Input delays and output delays 03/31/03 3 Constraint Concepts Constraints are used to: Define limitations required for the target technology to function properly Specify the environment in which the design must function in terms of input drive, output loading, temperature, power supply voltage, etc. Specify the design goals (other than functionality) in terms of bounds on input loading, output drive, area, performance, and power consumption. 03/31/03 4
3 References Design Compiler User Guide (DCUG) Design Compiler Reference Manual: Constraints and Timing (DCRM) Design Compiler Reference Manual: Optimization and Timing Analysis (DCRMO) 03/31/03 5 Classification of Constraints Design rule constraints Implicit constraints defined by the technology library Required for the design to function correctly Apply to any design using the library Optimization constraints Explicit constraints defined by the user Represent design goals 03/31/03 6
4 Design Constraints Figure 1-1 RMCT (See Next Slide) Constraints: Maximum Transition Time Maximum Fanout Maximum and minimum capacitance Cell degradation Cannot remove default values from tech lib Can make more restrictive than tech lib values 03/31/ /31/03 8
5 Maximum Transition Time Maximum transition time for a net is the longest time required for its driving pin to change logical values. Implies that slow transitions are to be avoided. What s wrong with slow transitions? Can be made more restrictive using set_max_transition 03/31/03 9 Maximum Fanout Places fanout restrictions on driving pins Each driven input or driven output port has a fanout_load value Each driving output has a max_fanout value Sum of driven fanout_loads must be no more than max_fanout of driver Fanout_load is dimensionless, typically a value normalized to some unit capacitance Can be made more restrictive by using set_max_fanout and set_fanout_load 03/31/03 10
6 Maximum and Minimum Capacitance Permits limiting capacitance directly rather than implicitly using max_fanout and max_transition Can make more restrictive by using set_max_capacitance Similar for minimum capacitance which is more of a modeling constraint and has lower priority in terms of being met. 03/31/03 11 Cell Degradation Delays are often determined with an ideal input transition time on a cell As the input transition time increases, delay increases for a given capacitive load increase Cell degradation tables that list maximum capacitance that can be driven by a cell as a function of transition times at the inputs of a cell. compile_fix_cell_degradation to fix table and set_cell_degradation to specify degradation. 03/31/03 12
7 Precedence for Design Rule Constraints Default higher priority than optimization constraints Descending order of priority Minimum capacitance* Maximum transition Maximum fanout Maximum capacitance Cell degradation Try not to apply multiple constraints from list * Contradicts another statement in DCRM! 03/31/03 13 Transition Time Calculation CMOS delay model: Transition Time = Drive R X Load C Non-linear delay model: Transition Time from table lookup and interpolation Set_driving_cell and set_drive give different behavior If R-C model, same If Nonlinear model, set_driving_cell calculates transition time dynamically set_drive picks a value from midrange in table 03/31/03 14
8 Design Rule Constraints Summary set_max_fanout Input ports or designs set_fanout_load Output ports set_load Ports or nets set_maximum_transition Ports or designs set_cell_degradation Input ports set_min_capacitance Input ports 03/31/03 15 Optimization Constraints Timing constraints (performance & speed) Timing paths Constraint violations Input and output delays (synchronous paths) minimum and maximum delays (asynchronous paths) Maximum area (# of gates) Minimum porosity (routability) 03/31/03 16
9 Timing Paths Timing path structure: IN Primary input to register Register to register FF CLK Primary input to primary output Register to to primary output OUT 03/31/03 17 Constraint Violations Synchronous clock period Maximum FF, combinational and wiring delay slack setup Slack - the extra time available for signals to propagate from the clock to the input of a flip-flop (FF) slack = clock period - path delay - setup 03/31/03 18
10 Constraint Violations (continued) CORRECTED Synchronous clock period Minimum FF, combinational and wiring delay hold slack Hold Slack - the extra delay present for signals to propagate from the clock to the input of a flip-flop (FF) slack = path delay - clock period - hold 03/31/03 19 Constraint Violations (continued) Synchronous Timing Violations Setup Time Uses maximum path delay (worst case model) Violation if slack < 0 Hold Time Uses minimum path delay (best case model) Violation if slack < 0 03/31/03 20
11 Constraint Violations Asynchronous maximum delay combinational and wiring delay slack Constraint Violation if slack < 0 03/31/03 21 Constraint Violations Asynchronous combinational and wiring delay minimum delay slack Constraint Violation if slack < 0 03/31/03 22
12 Clock, Input Delay and Output Delay input_delay Primary input to primary output output_delay IN FF OUT Primary input to register CLK CLK CLK The two clock signals are the same signal drawn to different scales. 03/31/03 23 Clocks, Input Delay and Output Delay (continued) Examples: create_clock -period 3.3 CLK Establishes a clock CLK with period 3.3 ns create_clock -period 3.3 -waveform (10,25) \ SYS_CLK Establishes virtual clock for system without a clock set_input_delay 0.3 -clock CLK IN Value on IN is available 0.3 ns after CLK set_output_delay 1.0 -clock CLK OUT Value on OUT must be available 1.0 ns before CLK -name 03/31/03 24
13 Maximum Delay and Minimum Delay max_delay min_delay Primary input to primary output IN FF OUT Primary input to register CLK max_delay min_delay 03/31/03 25 Maximum Delay and Minimum Delay (continued) Examples: set_maximum_delay 2.5 -from IN -to OUT Specifies that the delay from IN to OUT is to be no more than 2.5 ns set_minimum_delay 1.0 -from IN -to OUT Specifies that the delay from IN to OUT is to be no less than 1.0 ns set_maximum_delay 1.5 -from IN -to FF1/D 03/31/03 26
14 Maximum Area set_max_area area Specifies the maximum allowable area of the design in area units of the technology 03/31/03 27 Minimum Porosity Effective only for two-layer metal technology (therefore not used in our work) set_min_porosity porosity [design list] Specifies the part of the total cell area to be used for over the cell routing porosity - a percentage ratio of routing track area over cells to cell area; from 0 to /31/03 28
Logic Synthesis. Logic synthesis transforms RTL code into a gate-level netlist. RTL Verilog converted into Structural Verilog
Logic Synthesis Logic synthesis transforms RTL code into a gate-level netlist RTL Verilog converted into Structural Verilog Logic Synthesis - The process and steps Translation Check RTL for valid syntax
More information1. Partitioning the design for synthesis SYNTHESIS = TRANSLA TION + OPTIMIZA TION + MAPPING
8 Applying Synthesis Constraints 8.1 Introduction All synthesis tools must have a method of constraining the output netlist it generates. There are numerous synthesis constraints that need to be applied
More informationENGIN 112 Intro to Electrical and Computer Engineering
ENGIN 112 Intro to Electrical and Computer Engineering Lecture 28 Timing Analysis Overview Circuits do not respond instantaneously to input changes Predictable delay in transferring inputs to outputs Propagation
More informationTiming in ASICs 3.1 INTRODUCTION
TimeVerify.03 Page 45 Tuesday, July 27, 1999 2:03 PM C H A P T E R 3 Timing in ASICs 3.1 INTRODUCTION The number of ASICs designed increases every year. Advances in technology allow more transistors to
More informationTiming analysis can be done right after synthesis. But it can only be accurately done when layout is available
Timing Analysis Lecture 9 ECE 156A-B 1 General Timing analysis can be done right after synthesis But it can only be accurately done when layout is available Timing analysis at an early stage is not accurate
More informationTiming Issues in FPGA Synchronous Circuit Design
ECE 428 Programmable ASIC Design Timing Issues in FPGA Synchronous Circuit Design Haibo Wang ECE Department Southern Illinois University Carbondale, IL 62901 1-1 FPGA Design Flow Schematic capture HDL
More informationEE 5327 VLSI Design Laboratory. Lab 7 (1 week) - Power Optimization
EE 5327 VLSI Design Laboratory Lab 7 (1 week) - Power Optimization PURPOSE: The purpose of this lab is to introduce design optimization for power in addition to area and speed. We will be using Design
More informationECE 2300 Digital Logic & Computer Organization
ECE 2300 Digital Logic & Computer Organization Spring 2018 Timing Analysis Lecture 11: 1 Announcements Lab report guidelines are uploaded on CMS As part of the assignment for Lab 3 report Lab 4(A) prelab
More informationICCAD 2014 Contest Incremental Timing-driven Placement: Timing Modeling and File Formats v1.1 April 14 th, 2014
ICCAD 2014 Contest Incremental Timing-driven Placement: Timing Modeling and File Formats v1.1 April 14 th, 2014 http://cad contest.ee.ncu.edu.tw/cad-contest-at-iccad2014/problem b/ 1 Introduction This
More informationUNIVERSITY OF BOLTON SCHOOL OF ENGINEERING BENG (HONS) ELECTRICAL & ELECTRONICS ENGINEERING SEMESTER TWO EXAMINATION 2017/2018
UNIVERSITY OF BOLTON [EES04] SCHOOL OF ENGINEERING BENG (HONS) ELECTRICAL & ELECTRONICS ENGINEERING SEMESTER TWO EXAMINATION 2017/2018 INTERMEDIATE DIGITAL ELECTRONICS AND COMMUNICATIONS MODULE NO: EEE5002
More informationINF3430 Clock and Synchronization
INF3430 Clock and Synchronization P.P.Chu Using VHDL Chapter 16.1-6 INF 3430 - H12 : Chapter 16.1-6 1 Outline 1. Why synchronous? 2. Clock distribution network and skew 3. Multiple-clock system 4. Meta-stability
More informationLecture #2 Solving the Interconnect Problems in VLSI
Lecture #2 Solving the Interconnect Problems in VLSI C.P. Ravikumar IIT Madras - C.P. Ravikumar 1 Interconnect Problems Interconnect delay has become more important than gate delays after 130nm technology
More informationEE 42/100 Lecture 24: Latches and Flip Flops. Rev A 4/14/2010 (8:30 PM) Prof. Ali M. Niknejad
A. M. Niknejad University of California, Berkeley EE 100 / 42 Lecture 24 p. 1/15 EE 42/100 Lecture 24: Latches and Flip Flops ELECTRONICS Rev A 4/14/2010 (8:30 PM) Prof. Ali M. Niknejad University of California,
More informationManaging Metastability with the Quartus II Software
Managing Metastability with the Quartus II Software 13 QII51018 Subscribe You can use the Quartus II software to analyze the average mean time between failures (MTBF) due to metastability caused by synchronization
More informationDigital IC-Project and Verification
Digital IC-Project and Verification (STA) Liang Liu & Joachim Rodrigues Outline STA & PrimeTime Overview STA Using PrimeTime Basic Concepts PrimeTime Flow Suggestions What s STA STA is a method of validating
More information! Sequential Logic. ! Timing Hazards. ! Dynamic Logic. ! Add state elements (registers, latches) ! Compute. " From state elements
ESE 570: Digital Integrated Circuits and VLSI Fundamentals Lec 19: April 2, 2019 Sequential Logic, Timing Hazards and Dynamic Logic Lecture Outline! Sequential Logic! Timing Hazards! Dynamic Logic 4 Sequential
More informationModule -18 Flip flops
1 Module -18 Flip flops 1. Introduction 2. Comparison of latches and flip flops. 3. Clock the trigger signal 4. Flip flops 4.1. Level triggered flip flops SR, D and JK flip flops 4.2. Edge triggered flip
More informationCS/EE Homework 9 Solutions
S/EE 260 - Homework 9 Solutions ue 4/6/2000 1. onsider the synchronous ripple carry counter on page 5-8 of the notes. Assume that the flip flops have a setup time requirement of 2 ns and that the gates
More informationECE 301 Digital Electronics
ECE 301 Digital Electronics Constraints in Logic Circuit Design (Lecture #14) The slides included herein were taken from the materials accompanying Fundamentals of Logic Design, 6 th Edition, by Roth and
More informationStatic Timing Overview with intro to FPGAs. Prof. MacDonald
Static Timing Overview with intro to FPGAs Prof. MacDonald Static Timing In the 70 s timing was performed with Spice simulation In the 80 s timing was included in Verilog simulation to determine if design
More informationEDA Challenges for Low Power Design. Anand Iyer, Cadence Design Systems
EDA Challenges for Low Power Design Anand Iyer, Cadence Design Systems Agenda Introduction ti LP techniques in detail Challenges to low power techniques Guidelines for choosing various techniques Why is
More informationINTEGRATED CIRCUITS. For a complete data sheet, please also download:
INTEGRATED CIRCUITS DATA SHEET For a complete data sheet, please also download: The IC06 74HC/HCT/HCU/HCMOS Logic Family Specifications The IC06 74HC/HCT/HCU/HCMOS Logic Package Information The IC06 74HC/HCT/HCU/HCMOS
More informationCS250 VLSI Systems Design. Lecture 3: Physical Realities: Beneath the Digital Abstraction, Part 1: Timing
CS250 VLSI Systems Design Lecture 3: Physical Realities: Beneath the Digital Abstraction, Part 1: Timing Fall 2010 Krste Asanovic, John Wawrzynek with John Lazzaro and Yunsup Lee (TA) What do Computer
More informationLecture 02: Digital Logic Review
CENG 3420 Lecture 02: Digital Logic Review Bei Yu byu@cse.cuhk.edu.hk CENG3420 L02 Digital Logic. 1 Spring 2017 Review: Major Components of a Computer CENG3420 L02 Digital Logic. 2 Spring 2017 Review:
More informationbus waveforms transport delta and simulation
bus waveforms transport delta and simulation Time Modelling and Data Flow Descriptions Modeling time in VHDL Different models of time delay Specify timing requirement Data flow descriptions Signal resolution
More informationINTEGRATED CIRCUITS. For a complete data sheet, please also download:
INTEGRATED CIRCUITS DATA SHEET For a complete data sheet, please also download: The IC0 74HC/HCT/HCU/HCMOS Logic Family Specifications The IC0 74HC/HCT/HCU/HCMOS Logic Package Information The IC0 74HC/HCT/HCU/HCMOS
More informationLecture 3, Handouts Page 1. Introduction. EECE 353: Digital Systems Design Lecture 3: Digital Design Flows, Simulation Techniques.
Introduction EECE 353: Digital Systems Design Lecture 3: Digital Design Flows, Techniques Cristian Grecu grecuc@ece.ubc.ca Course web site: http://courses.ece.ubc.ca/353/ What have you learned so far?
More informationEE 42/100 Lecture 24: Latches and Flip Flops. Rev B 4/21/2010 (2:04 PM) Prof. Ali M. Niknejad
A. M. Niknejad University of California, Berkeley EE 100 / 42 Lecture 24 p. 1/21 EE 42/100 Lecture 24: Latches and Flip Flops ELECTRONICS Rev B 4/21/2010 (2:04 PM) Prof. Ali M. Niknejad University of California,
More information2014 Paper E2.1: Digital Electronics II
2014 Paper E2.1: Digital Electronics II Answer ALL questions. There are THREE questions on the paper. Question ONE counts for 40% of the marks, other questions 30% Time allowed: 2 hours (Not to be removed
More informationLow-Power Digital CMOS Design: A Survey
Low-Power Digital CMOS Design: A Survey Krister Landernäs June 4, 2005 Department of Computer Science and Electronics, Mälardalen University Abstract The aim of this document is to provide the reader with
More informationAccurate Timing and Power Characterization of Static Single-Track Full-Buffers
Accurate Timing and Power Characterization of Static Single-Track Full-Buffers By Rahul Rithe Department of Electronics & Electrical Communication Engineering Indian Institute of Technology Kharagpur,
More informationINTEGRATED CIRCUITS. For a complete data sheet, please also download:
INTEGRATED CIRCUITS DATA SHEET For a complete data sheet, please also download: The IC06 74HC/HCT/HCU/HCMOS Logic Family Specifications The IC06 74HC/HCT/HCU/HCMOS Logic Package Information The IC06 74HC/HCT/HCU/HCMOS
More informationSignal Integrity Management in an SoC Physical Design Flow
Signal Integrity Management in an SoC Physical Design Flow Murat Becer Ravi Vaidyanathan Chanhee Oh Rajendran Panda Motorola, Inc., Austin, TX Presenter: Rajendran Panda Talk Outline Functional and Delay
More informationDigital VLSI Design. Lecture 5: Timing Analysis
Digital VLSI Design Lecture 5: Timing Analysis Semester A, 2018-19 Lecturer: Dr. Adam Teman December 7, 2018 Disclaimer: This course was prepared, in its entirety, by Adam Teman. Many materials were copied
More informationTowards PVT-Tolerant Glitch-Free Operation in FPGAs
Towards PVT-Tolerant Glitch-Free Operation in FPGAs Safeen Huda and Jason H. Anderson ECE Department, University of Toronto, Canada 24 th ACM/SIGDA International Symposium on FPGAs February 22, 2016 Motivation
More informationUsing IBIS Models for Timing Analysis
Application Report SPRA839A - April 2003 Using IBIS Models for Timing Analysis ABSTRACT C6000 Hardware Applications Today s high-speed interfaces require strict timings and accurate system design. To achieve
More informationENGG1015: lab 3. Sequential Logic
ENGG1015: lab 3 Sequential Logic 1 st Semester 2012-13 This lab explores the world of sequential logic design. By the end of this lab, you will have implemented a working prototype of a Ball ounter that
More informationIn this lecture, we will first examine practical digital signals. Then we will discuss the timing constraints in digital systems.
1 In this lecture, we will first examine practical digital signals. Then we will discuss the timing constraints in digital systems. The important concepts are related to setup and hold times of registers
More informationAC Characteristics of MM74HC High-Speed CMOS
AC Characteristics of MM74HC High-Speed CMOS When deciding what circuits to use for a design, speed is most often a very important criteria. MM74HC is intended to offer the same basic speed performance
More information! Review: Sequential MOS Logic. " SR Latch. " D-Latch. ! Timing Hazards. ! Dynamic Logic. " Domino Logic. ! Charge Sharing Setup.
ESE 570: Digital Integrated Circuits and VLSI Fundamentals Lec 9: March 29, 206 Timing Hazards and Dynamic Logic Lecture Outline! Review: Sequential MOS Logic " SR " D-! Timing Hazards! Dynamic Logic "
More informationChapter 2 Combinational Circuits
Chapter 2 Combinational Circuits SKEE2263 Digital Systems Mun im/ismahani/izam {munim@utm.my,e-izam@utm.my,ismahani@fke.utm.my} February 23, 26 Why CMOS? Most logic design today is done on CMOS circuits
More informationEITF35: Introduction to Structured VLSI Design
EITF35: Introduction to Structured VLSI Design Part 4.2.1: Learn More Liang Liu liang.liu@eit.lth.se 1 Outline Crossing clock domain Reset, synchronous or asynchronous? 2 Why two DFFs? 3 Crossing clock
More informationSIMMAT A Metastability Analysis Tool
SIMMAT A Metastability Analysis Tool Simulation waveforms voltage d q Ian W. Jones and Suwen Yang, Oracle Labs, Mark Greenstreet, University of British Columbia clk time (ns) 1 November 2012 1 Outline
More informationManaging Cross-talk Noise
Managing Cross-talk Noise Rajendran Panda Motorola Inc., Austin, TX Advanced Tools Organization Central in-house CAD tool development and support organization catering to the needs of all design teams
More informationA Survey of the Low Power Design Techniques at the Circuit Level
A Survey of the Low Power Design Techniques at the Circuit Level Hari Krishna B Assistant Professor, Department of Electronics and Communication Engineering, Vagdevi Engineering College, Warangal, India
More informationCD54HC273, CD74HC273, CD54HCT273, CD74HCT273
Data sheet acquired from Harris Semiconductor SCHS174B February 1998 - Revised May 2003 CD54HC273, CD74HC273, CD54HCT273, CD74HCT273 High-Speed CMOS Logic Octal D-Type Flip-Flop with Reset [ /Title (CD74
More informationA Novel Low-Power Scan Design Technique Using Supply Gating
A Novel Low-Power Scan Design Technique Using Supply Gating S. Bhunia, H. Mahmoodi, S. Mukhopadhyay, D. Ghosh, and K. Roy School of Electrical and Computer Engineering, Purdue University, West Lafayette,
More information6.111 Lecture # 19. Controlling Position. Some General Features of Servos: Servomechanisms are of this form:
6.111 Lecture # 19 Controlling Position Servomechanisms are of this form: Some General Features of Servos: They are feedback circuits Natural frequencies are 'zeros' of 1+G(s)H(s) System is unstable if
More informationDM74ALS169B Synchronous Four-Bit Up/Down Counters
Synchronous Four-Bit Up/Down Counters General Description These synchronous presettable counters feature an internal carry look ahead for cascading in high speed counting applications. The DM74ALS169B
More informationClassification of Digital Circuits
Classification of Digital Circuits Combinational logic circuits. Output depends only on present input. Sequential circuits. Output depends on present input and present state of the circuit. Combinational
More informationModule 4: Combinational Logic Glitches and Hazards
Module 4: Combinational Logic Glitches and Hazards Wakerly: Chapter 4 (part 3) : ECEN 3233 r. Keith. Teague Spring 23 23 TIME RESPONSE in Combinational Networks emphasis on timing behavior of circuits
More informationPropagation Delay, Circuit Timing & Adder Design. ECE 152A Winter 2012
Propagation Delay, Circuit Timing & Adder Design ECE 152A Winter 2012 Reading Assignment Brown and Vranesic 2 Introduction to Logic Circuits 2.9 Introduction to CAD Tools 2.9.1 Design Entry 2.9.2 Synthesis
More informationPropagation Delay, Circuit Timing & Adder Design
Propagation Delay, Circuit Timing & Adder Design ECE 152A Winter 2012 Reading Assignment Brown and Vranesic 2 Introduction to Logic Circuits 2.9 Introduction to CAD Tools 2.9.1 Design Entry 2.9.2 Synthesis
More information54AC191 Up/Down Counter with Preset and Ripple Clock
54AC191 Up/Down Counter with Preset and Ripple Clock General Description The AC191 is a reversible modulo 16 binary counter. It features synchronous counting and asynchronous presetting. The preset feature
More informationDM74AS169A Synchronous 4-Bit Binary Up/Down Counter
Synchronous 4-Bit Binary Up/Down Counter General Description These synchronous presettable counters feature an internal carry look ahead for cascading in high speed counting applications. The DM74AS169
More informationA 0.9 V Low-power 16-bit DSP Based on a Top-down Design Methodology
UDC 621.3.049.771.14:621.396.949 A 0.9 V Low-power 16-bit DSP Based on a Top-down Design Methodology VAtsushi Tsuchiya VTetsuyoshi Shiota VShoichiro Kawashima (Manuscript received December 8, 1999) A 0.9
More informationMicrocircuit Electrical Issues
Microcircuit Electrical Issues Distortion The frequency at which transmitted power has dropped to 50 percent of the injected power is called the "3 db" point and is used to define the bandwidth of the
More informationIES Digital Mock Test
. The circuit given below work as IES Digital Mock Test - 4 Logic A B C x y z (a) Binary to Gray code converter (c) Binary to ECESS- converter (b) Gray code to Binary converter (d) ECESS- To Gray code
More informationVLSI Design Verification and Test Delay Faults II CMPE 646
Path Counting The number of paths can be an exponential function of the # of gates. Parallel multipliers are notorious for having huge numbers of paths. It is possible to efficiently count paths in spite
More informationWe ve looked at timing issues in combinational logic Let s now examine timing issues we must deal with in sequential circuits
Basic Timing Issues We ve looked at timing issues in combinational logic Let s now examine timing issues we must deal with in sequential circuits The fundamental timing issues we considered then apply
More informationELEC Digital Logic Circuits Fall 2015 Delay and Power
ELEC - Digital Logic Circuits Fall 5 Delay and Power Vishwani D. Agrawal James J. Danaher Professor Department of Electrical and Computer Engineering Auburn University, Auburn, AL 36849 http://www.eng.auburn.edu/~vagrawal
More informationSequential Logic Circuits
LAB EXERCISE - 5 Page 1 of 6 Exercise 5 Sequential Logic Circuits 1 - Introduction Goal of the exercise The goals of this exercise are: - verify the behavior of simple sequential logic circuits; - measure
More informationMixed Synchronous/Asynchronous State Memory for Low Power FSM Design
Mixed Synchronous/Asynchronous State Memory for Low Power FSM Design Cao Cao and Bengt Oelmann Department of Information Technology and Media, Mid-Sweden University S-851 70 Sundsvall, Sweden {cao.cao@mh.se}
More informationPower And Area Optimization of Pulse Latch Shift Register
International Journal of Engineering Research and Development e-issn: 2278-067X, p-issn: 2278-800X, www.ijerd.com Volume 12, Issue 6 (June 2016), PP.41-45 Power And Area Optimization of Pulse Latch Shift
More informationNTE74HC40105 Integrated Circuit TTL High Speed CMOS, 4 Bit x 16 Word FIFO Register
NTE74HC40105 Integrated Circuit TTL High Speed CMOS, 4 Bit x 16 Word FIFO Register Description: The NTE74HC40105 is a high speed silicon gate CMOS device in a 16 Lead DIP type package that is compatible,
More informationTiago Reimann Cliff Sze Ricardo Reis. Gate Sizing and Threshold Voltage Assignment for High Performance Microprocessor Designs
Tiago Reimann Cliff Sze Ricardo Reis Gate Sizing and Threshold Voltage Assignment for High Performance Microprocessor Designs A grain of rice has the price of more than a 100 thousand transistors Source:
More informationDynamic Logic. Domino logic P-E logic NORA logic 2-phase logic Multiple O/P domino logic Cascode logic 11/28/2012 1
Dynamic Logic Dynamic Circuits will be introduced and their performance in terms of power, area, delay, energy and AT 2 will be reviewed. We will review the following logic families: Domino logic P-E logic
More information! Is it feasible? ! How do we decompose the problem? ! Vdd. ! Topology. " Gate choice, logical optimization. " Fanin, fanout, Serial vs.
ESE 570: Digital Integrated Circuits and VLSI Fundamentals Design Space Exploration Lec 18: March 28, 2017 Design Space Exploration, Synchronous MOS Logic, Timing Hazards 3 Design Problem Problem Solvable!
More informationCD74HC73, CD74HCT73. Dual J-K Flip-Flop with Reset Negative-Edge Trigger. Features. Description. Ordering Information. Pinout
Data sheet acquired from Harris Semiconductor SCHS134 February 1998 CD74HC73, CD74HCT73 Dual J-K Flip-Flop with Reset Negative-Edge Trigger [ /Title (CD74 HC73, CD74 HCT73 ) /Subject Dual -K liplop Features
More informationDepartment of Electrical and Computer Systems Engineering
Department of Electrical and Computer Systems Engineering Technical Report MECSE-31-2005 Asynchronous Self Timed Processing: Improving Performance and Design Practicality D. Browne and L. Kleeman Asynchronous
More information1/19/2012. Timing in Asynchronous Circuits
Timing in Asynchronous Circuits 1 What do we mean by clock? The system clock for an integrated circuit is a voltage signal that pulses at a regular frequency. 1 0 Time The clock tells each stage of a circuit
More informationPolicy-Based RTL Design
Policy-Based RTL Design Bhanu Kapoor and Bernard Murphy bkapoor@atrenta.com Atrenta, Inc., 2001 Gateway Pl. 440W San Jose, CA 95110 Abstract achieving the desired goals. We present a new methodology to
More informationEE434 ASIC & Digital Systems
EE434 ASIC & Digital Systems Partha Pande School of EECS Washington State University pande@eecs.wsu.edu Spring 2015 Dae Hyun Kim daehyun@eecs.wsu.edu 1 Lecture 4 More on CMOS Gates Ref: Textbook chapter
More informationUNIT-II LOW POWER VLSI DESIGN APPROACHES
UNIT-II LOW POWER VLSI DESIGN APPROACHES Low power Design through Voltage Scaling: The switching power dissipation in CMOS digital integrated circuits is a strong function of the power supply voltage.
More informationAN EFFICIENT APPROACH TO MINIMIZE POWER AND AREA IN CARRY SELECT ADDER USING BINARY TO EXCESS ONE CONVERTER
AN EFFICIENT APPROACH TO MINIMIZE POWER AND AREA IN CARRY SELECT ADDER USING BINARY TO EXCESS ONE CONVERTER K. RAMAMOORTHY 1 T. CHELLADURAI 2 V. MANIKANDAN 3 1 Department of Electronics and Communication
More informationCD4541BC Programmable Timer
CD4541BC Programmable Timer General Description The CD4541BC Programmable Timer is designed with a 16-stage binary counter, an integrated oscillator for use with an external capacitor and two resistors,
More informationECE520 VLSI Design. Lecture 5: Basic CMOS Inverter. Payman Zarkesh-Ha
ECE520 VLSI Design Lecture 5: Basic CMOS Inverter Payman Zarkesh-Ha Office: ECE Bldg. 230B Office hours: Wednesday 2:00-3:00PM or by appointment E-mail: pzarkesh@unm.edu Slide: 1 Review of Last Lecture
More informationNovel Low-Overhead Operand Isolation Techniques for Low-Power Datapath Synthesis
Novel Low-Overhead Operand Isolation Techniques for Low-Power Datapath Synthesis N. Banerjee, A. Raychowdhury, S. Bhunia, H. Mahmoodi, and K. Roy School of Electrical and Computer Engineering, Purdue University,
More informationCD54/74HC74, CD54/74HCT74
CD54/74HC74, CD54/74HCT74 Data sheet acquired from Harris Semiconductor SCHS124A January 1998 - Revised May 2000 Dual D Flip-Flop with Set and Reset Positive-Edge Trigger Features Description [ /Title
More informationLecture 4&5 CMOS Circuits
Lecture 4&5 CMOS Circuits Xuan Silvia Zhang Washington University in St. Louis http://classes.engineering.wustl.edu/ese566/ Worst-Case V OL 2 3 Outline Combinational Logic (Delay Analysis) Sequential Circuits
More informationEC O4 403 DIGITAL ELECTRONICS
EC O4 403 DIGITAL ELECTRONICS Asynchronous Sequential Circuits - II 6/3/2010 P. Suresh Nair AMIE, ME(AE), (PhD) AP & Head, ECE Department DEPT. OF ELECTONICS AND COMMUNICATION MEA ENGINEERING COLLEGE Page2
More informationLecture 11: Clocking
High Speed CMOS VLSI Design Lecture 11: Clocking (c) 1997 David Harris 1.0 Introduction We have seen that generating and distributing clocks with little skew is essential to high speed circuit design.
More informationECEN 720 High-Speed Links Circuits and Systems
1 ECEN 720 High-Speed Links Circuits and Systems Lab4 Receiver Circuits Objective To learn fundamentals of receiver circuits. Introduction Receivers are used to recover the data stream transmitted by transmitters.
More informationMachine Learning for Next Generation EDA. Paul Franzon, NCSU (Site Director) Cirrus Logic Distinguished Professor Director of Graduate Programs
Machine Learning for Next Generation EDA Paul Franzon, NCSU (Site Director) Cirrus Logic Distinguished Professor Director of Graduate Programs Outline Introduction Vision Surrogate Modeling Applying Machine
More informationLecture 19: Design for Skew
Introduction to CMOS VLSI Design Lecture 19: Design for Skew David Harris Harvey Mudd College Spring 2004 Outline Clock Distribution Clock Skew Skew-Tolerant Circuits Traditional Domino Circuits Skew-Tolerant
More informationHigh Speed Communication Circuits and Systems Lecture 14 High Speed Frequency Dividers
High Speed Communication Circuits and Systems Lecture 14 High Speed Frequency Dividers Michael H. Perrott March 19, 2004 Copyright 2004 by Michael H. Perrott All rights reserved. 1 High Speed Frequency
More informationCD54/74HC175, CD54/74HCT175
CD54/74HC175, CD54/74HCT175 Data sheet acquired from Harris Semiconductor SCHS160A August 1997 - evised May 2000 High Speed CMOS Logic uad D-Type Flip-Flop with eset [ /Title (CD74 HC175, CD74 HCT17 5)
More informationLSI Design Flow Development for Advanced Technology
LSI Design Flow Development for Advanced Technology Atsushi Tsuchiya LSIs that adopt advanced technologies, as represented by imaging LSIs, now contain 30 million or more logic gates and the scale is beginning
More informationSSTV V 13-bit to 26-bit SSTL_2 registered buffer for stacked DDR DIMM
INTEGRATED CIRCUITS 2000 Dec 01 File under Integrated Circuits ICL03 2002 Feb 19 FEATURES Stub-series terminated logic for 2.5 V (SSTL_2) Optimized for stacked DDR (Double Data Rate) SDRAM applications
More informationR Using the Virtex Delay-Locked Loop
Application Note: Virtex Series XAPP132 (v2.4) December 20, 2001 Summary The Virtex FPGA series offers up to eight fully digital dedicated on-chip Delay-Locked Loop (DLL) circuits providing zero propagation
More informationBasic Logic Circuits
Basic Logic Circuits Required knowledge Measurement of static characteristics of nonlinear circuits. Measurement of current consumption. Measurement of dynamic properties of electrical circuits. Definitions
More informationComputer Architecture (TT 2012)
Computer Architecture (TT 212) Laws of Attraction aniel Kroening Oxford University, Computer Science epartment Version 1., 212 . Kroening: Computer Architecture (TT 212) 2 . Kroening: Computer Architecture
More information1 Q' 3. You are given a sequential circuit that has the following circuit to compute the next state:
UNIVERSITY OF CALIFORNIA Department of Electrical Engineering and Computer Sciences C50 Fall 2001 Prof. Subramanian Homework #3 Due: Friday, September 28, 2001 1. Show how to implement a T flip-flop starting
More information2009 Spring CS211 Digital Systems & Lab 1 CHAPTER 3: TECHNOLOGY (PART 2)
1 CHAPTER 3: IMPLEMENTATION TECHNOLOGY (PART 2) Whatwillwelearninthischapter? we learn in this 2 How transistors operate and form simple switches CMOS logic gates IC technology FPGAs and other PLDs Basic
More informationDM74LS191 Synchronous 4-Bit Up/Down Counter with Mode Control
August 1986 Revised February 1999 Synchronous 4-Bit Up/Down Counter with Mode Control General Description The circuit is a synchronous, reversible, up/ down counter. Synchronous operation is provided by
More informationLow Power Design Methods: Design Flows and Kits
JOINT ADVANCED STUDENT SCHOOL 2011, Moscow Low Power Design Methods: Design Flows and Kits Reported by Shushanik Karapetyan Synopsys Armenia Educational Department State Engineering University of Armenia
More informationUNIVERSITY OF CALIFORNIA College of Engineering Department of Electrical Engineering and Computer Sciences
UNIVERSITY OF CALIFORNIA College of Engineering Department of Electrical Engineering and Computer Sciences Jan Rabaey EECS 141 Spring 2010 LDPC Decoder Project Phase 3 Due Noon, Wednesday, May 5th, 2010
More informationEE E6930 Advanced Digital Integrated Circuits. Spring, 2002 Lecture 7. Clocked and self-resetting logic I
EE E6930 Advanced Digital Integrated Circuits Spring, 2002 Lecture 7. Clocked and self-resetting logic I References CBF, Chapter 8 DP, Section 4.3.3.1-4.3.3.4 Bernstein, High-speed CMOS design styles,
More informationEECS 141: FALL 98 FINAL
University of California College of Engineering Department of Electrical Engineering and Computer Science J. M. Rabaey 511 Cory Hall TuTh9:30-11am ee141@eecs EECS 141: FALL 98 FINAL For all problems, you
More informationJava Bread Board Introductory Digital Electronics Exercise 2, Page 1
Java Bread Board Introductory Digital Electronics Exercise 2, Page 1 JBB Excercise 2 The aim of this lab is to demonstrate how basic logic gates can be used to implement simple memory functions, introduce
More information