ECE 545 Lecture 5. Data Flow Modeling in VHDL. George Mason University
|
|
|
- Rose Jones
- 5 years ago
- Views:
Transcription
1 ECE 545 Lecture 5 Data Flow Modeling in VHDL George Mason University
2 Required reading P. Chu, RTL Hardware Design using VHDL Chapter 4, Concurrent Signal Assignment Statements of VHDL 2
3 Types of VHDL Description VHDL Descriptions dataflow Concurrent statements structural Components and interconnects Testbenches behavioral (sequential) Sequential statements Registers State machines Instruction decoders Subset most suitable for synthesis 3
4 Synthesizable VHDL Dataflow VHDL Description VHDL code synthesizable Dataflow VHDL Description VHDL code synthesizable 4
5 Register Transfer Level (RTL) Design Description Today s Topic Combinational Logic Combinational Logic Registers 5
6 Data-Flow VHDL Concurrent Statements concurrent signal assignment ( ) conditional concurrent signal assignment (when-else) selected concurrent signal assignment (with-select-when) ECE 448 FPGA and ASIC Design with VHDL 6
7 Concurrent signal assignment <= target_signal <= expression; 7
8 Conditional concurrent signal assignment When - Else target_signal <= value1 when condition1 else value2 when condition2 else... valuen-1 when conditionn-1 else valuen; 8
9 Selected concurrent signal assignment With Select-When with choice_expression select target_signal <= expression1 when choices_1, expression2 when choices_2,... expressionn when choices_n; 9
10 Data-Flow VHDL Concurrent Statements simple concurrent signal assignment ( ) conditional concurrent signal assignment (when-else) selected concurrent signal assignment (with-select-when) 10
11 Wires and Buses ECE 448 FPGA and ASIC Design with VHDL 11
12 Signals SIGNAL a : STD_LOGIC; a 1 wire SIGNAL b : STD_LOGIC_VECTOR(7 DOWNTO 0); b 8 bus 12
13 Merging wires and buses a b d c SIGNAL a: STD_LOGIC_VECTOR(3 DOWNTO 0); SIGNAL b: STD_LOGIC_VECTOR(4 DOWNTO 0); SIGNAL c: STD_LOGIC; SIGNAL d: STD_LOGIC_VECTOR(9 DOWNTO 0); d <= a & b & c; 13
14 Splitting buses d a b c SIGNAL a: STD_LOGIC_VECTOR(3 DOWNTO 0); SIGNAL b: STD_LOGIC_VECTOR(4 DOWNTO 0); SIGNAL c: STD_LOGIC; SIGNAL d: STD_LOGIC_VECTOR(9 DOWNTO 0); a <= d(9 downto 6); b <= d(5 downto 1); c <= d(0); 14
15 Data-flow VHDL: Example x y cin s cout 15
16 Data-flow VHDL: Example (1) LIBRARY ieee ; USE ieee.std_logic_1164.all ; ENTITY fulladd IS PORT ( x : IN STD_LOGIC ; y : IN STD_LOGIC ; cin : IN STD_LOGIC ; s : OUT STD_LOGIC ; cout : OUT STD_LOGIC ) ; END fulladd ; 16
17 Data-flow VHDL: Example (2) ARCHITECTURE dataflow OF fulladd IS BEGIN s <= x XOR y XOR cin ; cout <= (x AND y) OR (cin AND x) OR (cin AND y) ; END dataflow ; 17
18 Logic Operators Logic operators and or nand nor xor not xnor Logic operators precedence Highest Lowest only in VHDL-93 or later not and or nand nor xor xnor 18
19 No Implied Precedence Wanted: y = ab + cd Incorrect y <= a and b or c and d ; equivalent to y <= ((a and b) or c) and d ; equivalent to y = (ab + c)d Correct y <= (a and b) or (c and d) ; 19
20 arith_result <= a + b + c 1; RTL Hardware Design Chapter 4 20
21 Signal assignment statement with a closed feedback loop a signal appears in both sides of a concurrent assignment statement E.g., q <= ((not q) and (not en)) or (d and en); Syntactically correct Form a closed feedback loop Should be avoided RTL Hardware Design Chapter 4 21
22 Data-Flow VHDL Concurrent Statements simple concurrent signal assignment ( ) conditional concurrent signal assignment (when-else) selected concurrent signal assignment (with-select-when) generate scheme for equations (for-generate) 22
23 Conditional concurrent signal assignment When - Else target_signal <= value1 when condition1 else value2 when condition2 else... valuen-1 when conditionn-1 else valuen; 23
24 Most often implied structure When - Else target_signal <= value1 when condition1 else value2 when condition2 else... valuen-1 when conditionn-1 else valuen; Value N Value N Condition N-1. Value Value Target Signal Condition 2 Condition 1 24
25 2-to-1 abstract mux sel has a data type of boolean If sel is true, the input from T port is connected to output. If sel is false, the input from F port is connected to output. RTL Hardware Design Chapter 4 25
26 RTL Hardware Design Chapter 4 26
27 RTL Hardware Design Chapter 4 27
28 RTL Hardware Design Chapter 4 28
29 E.g., RTL Hardware Design Chapter 4 29
30 E.g., RTL Hardware Design Chapter 4 30
31 Signed and Unsigned Types Behave exactly like STD_LOGIC_VECTOR plus, they determine whether a given vector should be treated as a signed or unsigned number. Require USE ieee.numeric_std.all; 31
32 Operators Relational operators = /= < <= > >= Logic and relational operators precedence Highest Lowest not = /= < <= > >= and or nand nor xor xnor 32
33 Priority of logic and relational operators compare a = bc Incorrect when a = b and c else equivalent to when (a = b) and c else Correct when a = (b and c) else 33
34 Data-Flow VHDL Concurrent Statements simple concurrent signal assignment ( ) conditional concurrent signal assignment (when-else) selected concurrent signal assignment (with-select-when) generate scheme for equations (for-generate) 34
35 Selected concurrent signal assignment With Select-When with choice_expression select target_signal <= expression1 when choices_1, expression2 when choices_2,... expressionn when choices_n; 35
36 Most Often Implied Structure With Select-When with choice_expression select target_signal <= expression1 when choices_1, expression2 when choices_2,... expressionn when choices_n; expression1 expression2 choices_1 choices_2 target_signal expressionn choices_n choice expression 36
37 Allowed formats of choices_k WHEN value WHEN value_1 value_2... value N WHEN OTHERS 37
38 Allowed formats of choice_k - example WITH sel SELECT y <= a WHEN "000", c WHEN "001" "111", d WHEN OTHERS; 38
39 Syntax Simplified syntax: with select_expression select signal_name <= value_expr_1 when choice_1, value_expr_2 when choice_2, value_expr_3 when choice_3,... value_expr_n when choice_n; RTL Hardware Design Chapter 4 39
40 select_expression Discrete type or 1-D array With finite possible values choice_i A value of the data type Choices must be mutually exclusive all inclusive others can be used as last choice_i RTL Hardware Design Chapter 4 40
41 E.g., 4-to-1 mux RTL Hardware Design Chapter 4 41
42 Can 11 be used to replace others? RTL Hardware Design Chapter 4 42
43 E.g., 2-to-2 2 binary decoder RTL Hardware Design Chapter 4 43
44 E.g., simple ALU RTL Hardware Design Chapter 4 44
45 E.g., Truth table RTL Hardware Design Chapter 4 45
46 Conceptual implementation Achieved by a multiplexing circuit Abstract (k+1)-to-1 multiplexer sel is with a data type of (k+1) values: c0, c1, c2,..., ck RTL Hardware Design Chapter 4 46
47 select_expression is with a data type of 5 values: c0, c1, c2, c3, c4 RTL Hardware Design Chapter 4 47
48 RTL Hardware Design Chapter 4 48
49 E.g., RTL Hardware Design Chapter 4 49
50 3. Conditional vs. selected signal assignment Conversion between conditional vs. selected signal assignment Comparison RTL Hardware Design Chapter 4 50
51 From selected assignment to conditional assignment RTL Hardware Design Chapter 4 51
52 From conditional assignment to selected assignment RTL Hardware Design Chapter 4 52
53 Comparison Selected signal assignment: good match for a circuit described by a functional table E.g., binary decoder, multiplexer Less effective when an input pattern is given a preferential treatment RTL Hardware Design Chapter 4 53
54 Conditional signal assignment: good match for a circuit that needs to give preferential treatment for certain conditions or to prioritize the operations E.g., priority encoder Can handle complicated conditions. e.g., RTL Hardware Design Chapter 4 54
55 May over-specify for a functional table based circuit. E.g., mux RTL Hardware Design Chapter 4 55
ECE 448 Lecture 3. Combinational-Circuit Building Blocks. Data Flow Modeling of Combinational Logic
ECE 448 Lecture 3 Combinational-Circuit Building Blocks Data Flow Modeling of Combinational Logic George Mason University Reading Required P. Chu, FPGA Prototyping by VHDL Examples Chapter 3, RT-level
ECE 448 Lecture 3. Combinational-Circuit Building Blocks. Data Flow Modeling of Combinational Logic
ECE 448 Lecture 3 Combinational-Circuit Building Blocks Data Flow Modeling of Combinational Logic George Mason University Reading Required P. Chu, FPGA Prototyping by VHDL Examples Chapter 3, RT-level
Outline. Concurrent Signal Assignment Statements. 2. Simple signal assignment statement. 1. Combinational vs. sequential circuit
Outline Concurrent Signal Assignment Statements 1. Combinational versus sequential circuit 2. Simple signal assignment statement 3. Conditional signal assignment statement 4. Selected signal assignment
Lecture 1: VHDL Quick Start. Digital Systems Design. Fall 10, Dec 17 Lecture 1 1
Lecture 1: VHDL Quick Start Digital Systems Design Fall 10, Dec 17 Lecture 1 1 Objective Quick introduction to VHDL basic language concepts basic design methodology Use The Student s Guide to VHDL or The
ECE 545 Lecture 8. Data Flow Description of Combinational-Circuit Building Blocks. George Mason University
ECE 545 Lecture 8 Data Flow Description of Combinational-Circuit Building Blocks George Mason University Required reading P. Chu, RTL Hardware Design using VHDL Chapter 7, Combinational Circuit Design:
Digital Systems Design
Digital Systems Design Review of Combinatorial Circuit Building Blocks: VHDL for Combinational Circuits Dr. D. J. Jackson Lecture 2-1 Introduction to VHDL Designer writes a logic circuit description in
Lecture 4. VHDL Fundamentals. George Mason University
Lecture 4 VHDL Fundamentals George Mason University Required reading P. Chu, RTL Hardware Design using VHDL Chapter 3, Basic Language Constructs of VHDL 2 Design Entity ECE 448 FPGA and ASIC Design with
Digital Systems Design
IAY 0600 Example: HalfAdder Behavior Structure Digital Systems Design a b Sum Carry 0 0 0 0 0 1 1 0 a b HalfAdder Sum Carry 1 0 1 0 VHDL discussion Dataflow Style Combinational Design 1 1 0 1 a Sum Sum
Digital Systems Design
IAY 0600 Digital Systems Design VHDL discussion Dataflow Style Combinational Design Tallinn University of Technology Combinational systems Combinational systems have no memory. A combinational system's
VHDL for FPGA Design. by : Mohamed Samy
VHDL for FPGA Design by : Mohamed Samy VHDL Vhdl is Case insensitive myvar = myvar = MYVAR IF = if = if Comments start with -- Comments can exist anywhere in the line Semi colon indicates the end of statements
Hardware Description Language VHDL (1) Introduction
Hardware Description Language VHDL (1) Introduction Digital Radiation Measurement and Spectroscopy NE/RHP 537 Introduction Hardware description language (HDL) Intended to describe circuits textually, for
Lecture 4. VHDL Fundamentals. Required reading. Example: NAND Gate. Design Entity. Example VHDL Code. Design Entity
Required reading Lecture 4 VHDL Fundamentals P. Chu, RTL Hardware Design using VHDL Chapter 3, Basic Language Constructs of VHDL George Mason University 2 Example: NAND Gate Design Entity a b z a b z 0
Abi Farsoni, Department of Nuclear Engineering and Radiation Health Physics, Oregon State University
Hardware description language (HDL) Intended to describe circuits textually, for a computer to read Evolved starting in the 1970s and 1980s Popular languages today include: VHDL Defined in 1980s by U.S.
ELE432. ADVANCED DIGITAL DESIGN HACETTEPE UNIVERSITY Designing with VHDL
ELE432 ADVANCED DIGITAL DESIGN HACETTEPE UNIVERSITY Designing with VHDL Organization of the Week Quartus II and simple I/O Combinational Sequential References Required P. Chu, FPGA Prototyping by VHDL
Lecture 12 VHDL Synthesis
CPE 487: Digital System Design Spring 2018 Lecture 12 VHDL Synthesis Bryan Ackland Department of Electrical and Computer Engineering Stevens Institute of Technology Hoboken, NJ 07030 1 What is Synthesis?
IE1204 Digital Design L7: Combinational circuits, Introduction to VHDL
IE24 Digital Design L7: Combinational circuits, Introduction to VHDL Elena Dubrova KTH / ICT / ES dubrova@kth.se This lecture BV 38-339, 6-65, 28-29,34-365 IE24 Digital Design, HT 24 2 The multiplexer
Chapter 6 Combinational-Circuit Building Blocks
Chapter 6 Combinational-Circuit Building Blocks Commonly used combinational building blocks in design of large circuits: Multiplexers Decoders Encoders Comparators Arithmetic circuits Multiplexers A multiplexer
Basic Language Concepts
Basic Language Concepts Sudhakar Yalamanchili, Georgia Institute of Technology ECE 4170 (1) Describing Design Entities a sum b carry Primary programming abstraction is a design entity Register, logic block,
VHDL 2 Combinational Logic Circuits. Reference: Roth/John Text: Chapter 2
VHDL 2 Combinational Logic Circuits Reference: Roth/John Text: Chapter 2 Combinational logic -- Behavior can be specified as concurrent signal assignments -- These model concurrent operation of hardware
Nanosistemų programavimo kalbos 4 paskaita. Nuosekliai vykdomi sakiniai
Nanosistemų programavimo kalbos 4 paskaita Nuosekliai vykdomi sakiniai Sequential Statements This slide set covers the sequential statements and the VHDL process (do NOT con- fuse with sequential circuits)
Lecture 3: Modeling in VHDL. EE 3610 Digital Systems
EE 3610: Digital Systems 1 Lecture 3: Modeling in VHDL VHDL: Overview 2 VHDL VHSIC Hardware Description Language VHSIC=Very High Speed Integrated Circuit Programming language for modelling of hardware
Introduction to VHDL #1
ECE 3220 Digital Design with VHDL Introduction to VHDL #1 Lecture 3 Introduction to VHDL The two Hardware Description Languages that are most often used in industry are: n VHDL n Verilog you will learn
ELCT 501: Digital System Design
ELCT 501: Digital System Lecture 4: CAD tools (Continued) Dr. Mohamed Abd El Ghany, Basic VHDL Concept Via an Example Problem: write VHDL code for 1-bit adder 4-bit adder 2 1-bit adder Inputs: A (1 bit)
Introduction to VHDL #3
ECE 322 Digital Design with VHDL Introduction to VHDL #3 Lecture 7 & 8 VHDL Modeling Styles VHDL Modeling Styles Dataflow Concurrent statements Structural Components and interconnects Behavioral (sequential)
Chapter 2 Basic Logic Circuits and VHDL Description
Chapter 2 Basic Logic Circuits and VHDL Description We cannot solve our problems with the same thinking we used when we created them. ----- Albert Einstein Like a C or C++ programmer don t apply the logic.
Lecture 3 Introduction to VHDL
CPE 487: Digital System Design Spring 2018 Lecture 3 Introduction to VHDL Bryan Ackland Department of Electrical and Computer Engineering Stevens Institute of Technology Hoboken, NJ 07030 1 Managing Design
CDA 4253 FPGA System Design Introduction to VHDL. Hao Zheng Dept of Comp Sci & Eng USF
CDA 4253 FPGA System Design Introduction to VHDL Hao Zheng Dept of Comp Sci & Eng USF Reading P. Chu, FPGA Prototyping by VHDL Examples Chapter 1, Gate-level combinational circuits Two purposes of using
FPGA BASED SYSTEM DESIGN. Dr. Tayab Din Memon Lecture 9 & 10 : Combinational and Sequential Logic
FPGA BASED SYSTEM DESIGN Dr. Tayab Din Memon tayabuddin.memon@faculty.muet.edu.pk Lecture 9 & 10 : Combinational and Sequential Logic Combinational vs Sequential Logic Combinational logic output depends
ECE 545 Lecture 6. Behavioral Modeling of Sequential-Circuit Building Blocks. George Mason University
ECE 545 Lecture 6 Behavioral Modeling of Sequential-Circuit Building Blocks George Mason University Required reading P. Chu, RTL Hardware Design using VHDL Chapter 5.1, VHDL Process Chapter 8, Sequential
VHDL: A Crash Course
VHDL: A Crash Course Dr. Manuel Jiménez With contributions by: Irvin Ortiz Flores Electrical and Computer Engineering Department University of Puerto Rico - Mayaguez Outline Background Program Structure
ENGIN 241 Digital Systems with Lab
ENGIN 241 Digital Systems with Lab (4) Dr. Honggang Zhang Engineering Department University of Massachusetts Boston 1 Introduction Hardware description language (HDL): Specifies logic function only Computer-aided
ECE 545 Lecture 12. Datapath vs. Controller. Structure of a Typical Digital System Data Inputs. Required reading. Design of Controllers
ECE 545 Lecture 12 Design of Controllers Finite State Machines and Algorithmic State Machine (ASM) Charts Required reading P. Chu, using VHDL Chapter 1, Finite State Machine: Principle & Practice Chapter
ACS College of Engineering. Department of Biomedical Engineering. Logic Design Lab pre lab questions ( ) Cycle-1
ACS College of Engineering Department of Biomedical Engineering Logic Design Lab pre lab questions (2015-2016) Cycle-1 1. What is a combinational circuit? 2. What are the various methods of simplifying
Lecture 7. Standard ICs FPGA (Field Programmable Gate Array) VHDL (Very-high-speed integrated circuits. Hardware Description Language)
Standard ICs FPGA (Field Programmable Gate Array) VHDL (Very-high-speed integrated circuits Hardware Description Language) 1 Standard ICs PLD: Programmable Logic Device CPLD: Complex PLD FPGA: Field Programmable
C-Based Hardware Design
LECTURE 6 In this lecture we will introduce: The VHDL Language and its benefits. The VHDL entity Concurrent and Sequential constructs Structural design. Hierarchy Packages Various architectures Examples
!"#$%&&"'(')"*+"%,%-".#"'/"'.001$$"
!"#$%&&"'(')"*+"%,%-".#"'/"'.001$$"!!"#$%&'#()#*+"+#,-."/0110#230#4."50",+"+#)6# 6+-+#(.6+-0#)4475.8)60#0/#.65-0#230#9+**+"+# 2.48).-0#(.6+-0#! 2+"*5."5*:#,."/0110#;)**0! *),".6*:#-.99-0*0"5."+#2+660,.40"5)#;)*)2)#
Design units can NOT be split across different files
Skeleton of a Basic VHDL Program This slide set covers the components to a basic VHDL program, including lexical elements, program format, data types and operators A VHDL program consists of a collection
Contents. Appendix D VHDL Summary Page 1 of 23
Appendix D VHDL Summary Page 1 of 23 Contents Appendix D VHDL Summary...2 D.1 Basic Language Elements...2 D.1.1 Comments...2 D.1.2 Identifiers...2 D.1.3 Data Objects...2 D.1.4 Data Types...2 D.1.5 Data
Digital Design with FPGAs. By Neeraj Kulkarni
Digital Design with FPGAs By Neeraj Kulkarni Some Basic Electronics Basic Elements: Gates: And, Or, Nor, Nand, Xor.. Memory elements: Flip Flops, Registers.. Techniques to design a circuit using basic
Concurrent Signal Assignment Statements (CSAs)
Concurrent Signal Assignment Statements (CSAs) Digital systems operate with concurrent signals Signals are assigned values at a specific point in time. VHDL uses signal assignment statements Specify value
FPGA Design Challenge :Techkriti 14 Digital Design using Verilog Part 1
FPGA Design Challenge :Techkriti 14 Digital Design using Verilog Part 1 Anurag Dwivedi Digital Design : Bottom Up Approach Basic Block - Gates Digital Design : Bottom Up Approach Gates -> Flip Flops Digital
310/ ICTP-INFN Advanced Tranining Course on FPGA and VHDL for Hardware Simulation and Synthesis 27 November - 22 December 2006
310/1780-10 ICTP-INFN Advanced Tranining Course on FPGA and VHDL for Hardware Simulation and Synthesis 27 November - 22 December 2006 VHDL & FPGA - Session 2 Nizar ABDALLH ACTEL Corp. 2061 Stierlin Court
Introduction to VHDL
Introduction to VHDL Agenda Introduce VHDL Basic VHDL constructs Implementing circuit functions Logic, Muxes Clocked Circuits Counters, Shifters State Machines FPGA design and implementation issues FPGA
Very High Speed Integrated Circuit Har dware Description Language
Very High Speed Integrated Circuit Har dware Description Language Industry standard language to describe hardware Originated from work in 70 s & 80 s by the U.S. Departm ent of Defence Root : ADA Language
ECE 545 Lecture 12. FPGA Resources. George Mason University
ECE 545 Lecture 2 FPGA Resources George Mason University Recommended reading 7 Series FPGAs Configurable Logic Block: User Guide Overview Functional Details 2 What is an FPGA? Configurable Logic Blocks
Logic and Computer Design Fundamentals VHDL. Part 1 Chapter 4 Basics and Constructs
Logic and Computer Design Fundamentals VHDL Part Chapter 4 Basics and Constructs Charles Kime & Thomas Kaminski 24 Pearson Education, Inc. Terms of Use (Hyperlinks are active in View Show mode) Overview
VHDL. Official Definition: VHSIC Hardware Description Language VHISC Very High Speed Integrated Circuit
VHDL VHDL Official Definition: VHSIC Hardware Description Language VHISC Very High Speed Integrated Circuit VHDL Alternative (Student Generated) Definition Very Hard Digital Logic language VHDL Design
Outline. Combinational Circuit Design: Practice. Sharing. 2. Operator sharing. An example 0.55 um standard-cell CMOS implementation
Outline Combinational Circuit Design: Practice 1. Derivation of efficient HDL description 2. Operator sharing 3. Functionality sharing 4. Layout-related circuits 5. General circuits Chapter 7 1 Chapter
Combinational Circuit Design: Practice
Combinational Circuit Design: Practice Chapter 7 1 Outline 1. Derivation of efficient HDL description 2. Operator sharing 3. Functionality sharing 4. Layout-related circuits 5. General circuits Chapter
ECE 545 Lecture 4. Simple Testbenches. George Mason University
ECE 545 Lecture 4 Simple Testbenches George Mason University Required reading P. Chu, RTL Hardware Design using VHDL Chapter 2.2.4, Testbenches 2 Testbenches ECE 448 FPGA and ASIC Design with VHDL 3 Testbench
ECE U530 Digital Hardware Synthesis. Course Accounts and Tools
ECE U530 Digital Hardware Synthesis Prof. Miriam Leeser mel@coe.neu.edu Sept 13, 2006 Lecture 3: Basic VHDL constructs Signals, Variables, Constants VHDL Simulator and Test benches Types Reading: Ashenden
Hardware Description Languages. Modeling Complex Systems
Hardware Description Languages Modeling Complex Systems 1 Outline (Raising the Abstraction Level) The Process Statement if-then, if-then-else, if-then-elsif, case, while, for Sensitivity list Signals vs.
CS211 Digital Systems/Lab. Introduction to VHDL. Hyotaek Shim, Computer Architecture Laboratory
CS211 Digital Systems/Lab Introduction to VHDL Hyotaek Shim, Computer Architecture Laboratory Programmable Logic Device (PLD) 2/32 An electronic component used to build reconfigurable digital circuits
DIGITAL LOGIC WITH VHDL (Fall 2013) Unit 3
DIGITAL LOGIC WITH VHDL (Fall 2013) Unit 3 BEHAVIORAL DESCRIPTION Asynchronous processes (decoder, mux, encoder, etc): if-else, case, for-loop. BEHAVIORAL DESCRIPTION (OR SEQUENTIAL) In this design style,
structure syntax different levels of abstraction
This and the next lectures are about Verilog HDL, which, together with another language VHDL, are the most popular hardware languages used in industry. Verilog is only a tool; this course is about digital
Here is a list of lecture objectives. They are provided for you to reflect on what you are supposed to learn, rather than an introduction to this
This and the next lectures are about Verilog HDL, which, together with another language VHDL, are the most popular hardware languages used in industry. Verilog is only a tool; this course is about digital
DIGITAL LOGIC DESIGN VHDL Coding for FPGAs Unit 3
DIGITAL LOGIC DESIGN VHDL Coding for FPGAs Unit 3 BEHAVIORAL DESCRIPTION Asynchronous processes (decoder, mux, encoder, etc): if-else, case, for-loop. Arithmetic expressions inside asynchronous processes.
IT T35 Digital system desigm y - ii /s - iii
UNIT - V Introduction to Verilog Hardware Description Language Introduction HDL for combinational circuits Sequential circuits Registers and counters HDL description for binary multiplier. 5.1 INTRODUCTION
Advanced Training Course on FPGA Design and VHDL for Hardware Simulation and Synthesis. 26 October - 20 November, 2009
2065-15 Advanced Training Course on FPGA Design and VHDL for Hardware Simulation and Synthesis 26 October - 20 November, 2009 FPGA Architectures & VHDL Introduction to Synthesis Nizar Abdallah ACTEL Corp.2061
Writing VHDL for RTL Synthesis
Writing VHDL for RTL Synthesis Stephen A. Edwards, Columbia University December 21, 2009 The name VHDL is representative of the language itself: it is a two-level acronym that stands for VHSIC Hardware
Sequential Statements
Sequential Statements Chapter 5 1 Outline 1. VHDL process 2. Sequential signal assignment statement 3. Variable assignment statement 4. If statement 5. Case statement 6. Simple for loop statement Chapter
DIGITAL LOGIC WITH VHDL (Fall 2013) Unit 2
DIGITAL LOGIC WITH VHDL (Fall 23) Unit 2 Use of std_logic_vector. CONCURRENT DESCRIPTION with-select, when-else statements Examples: multiplexor, decoder. std_logic_vector In the example, we use the std_logic_vector
Multi-valued Logic. Standard Logic IEEE 1164 Type std_ulogic is ( U, uninitialized
Multi-valued Logic Standard Logic IEEE 1164 Type std_ulogic is ( U, uninitialized X, unknown 0, logic 0 1, logic 1 Z, high impedance W, unknown L, logic 0 weak H, logic 1 weak - ); don t care Standard
COE 405 Design Methodology Based on VHDL
COE 405 Design Methodology Based on VHDL Dr. Aiman H. El-Maleh Computer Engineering Department King Fahd University of Petroleum & Minerals Outline Elements of VHDL Top-Down Design Top-Down Design with
ECE 448 Lecture 4. Sequential-Circuit Building Blocks. Mixing Description Styles
ECE 448 Lecture 4 Sequential-Circuit Building Blocks Mixing Description Styles George Mason University Reading Required P. Chu, FPGA Prototyping by VHDL Examples Chapter 4, Regular Sequential Circuit Recommended
VHDL. Chapter 7. Behavioral Modeling. Outline. Behavioral Modeling. Process Statement
Chapter 7 VHDL VHDL - Flaxer Eli Ch 7-1 Process Statement Outline Signal Assignment Statement Variable Assignment Statement Wait Statement If-Then-Else Statement Case Statement Null Statement Loop Statement
TSIU03, SYSTEM DESIGN LECTURE 2
LINKÖPING UNIVERSITY Department of Electrical Engineering TSIU03, SYSTEM DESIGN LECTURE 2 Mario Garrido Gálvez mario.garrido.galvez@liu.se Linköping, 2018 1 From 1bit to several bits. TODAY - Review of
EE 459/500 HDL Based Digital Design with Programmable Logic. Lecture 6 Combinational and sequential circuits
EE 459/5 HL Based igital esign with Programmable Logic Lecture 6 ombinational and sequential circuits Read before class: hapter 2 from textbook Overview ombinational circuits Multiplexer, decoders, encoders,
Design Using Verilog
EGC220 Design Using Verilog Baback Izadi Division of Engineering Programs bai@engr.newpaltz.edu Basic Verilog Lexical Convention Lexical convention are close to C++. Comment // to the of the line. /* to
Introduction to VHDL. Main language concepts
Introduction to VHDL VHSIC (Very High Speed Integrated Circuit) Hardware Description Language Current standard is IEEE 1076-1993 (VHDL-93). Some tools still only support VHDL-87. Tools used in the lab
ECE 545 Lecture 7. Modeling of Circuits with a Regular Structure. Aliases, Attributes, Packages. Mixing Design Styles. George Mason University
ECE 545 Lecture 7 Modeling of Circuits with a Regular Structure Aliases, Attributes, Packages Mixing Design Styles George Mason University Required reading P. Chu, RTL Hardware Design using VHDL Chapters
VHDL. ELEC 418 Advanced Digital Systems Dr. Ron Hayne. Images Courtesy of Cengage Learning
VHDL ELEC 418 Advanced Digital Systems Dr. Ron Hayne Images Courtesy of Cengage Learning Design Flow 418_02 2 VHDL Modules 418_02 3 VHDL Libraries library IEEE; use IEEE.std_logic_1164.all; std_logic Single-bit
CSCI Lab 3. VHDL Syntax. Due: Tuesday, week6 Submit to: \\fs2\csci250\lab-3\
![CSCI Lab 3. VHDL Syntax. Due: Tuesday, week6 Submit to: \\fs2\csci250\lab-3\](/thumbs/74/70459415.jpg "CSCI Lab 3. VHDL Syntax. Due: Tuesday, week6 Submit to: \\fs2\csci250\lab-3\")
CSCI 250 - Lab 3 VHDL Syntax Due: Tuesday, week6 Submit to: \\fs2\csci250\lab-3\ Objectives 1. Learn VHDL Valid Names 2. Learn the presentation of Assignment and Comments 3. Learn Modes, Types, Array,
VHDL: RTL Synthesis Basics. 1 of 59
VHDL: RTL Synthesis Basics 1 of 59 Goals To learn the basics of RTL synthesis. To be able to synthesize a digital system, given its VHDL model. To be able to relate VHDL code to its synthesized output.
Lattice VHDL Training
Lattice Part I February 2000 1 VHDL Basic Modeling Structure February 2000 2 VHDL Design Description VHDL language describes a digital system as a set of modular blocks. Each modular block is described
What is Verilog HDL? Lecture 1: Verilog HDL Introduction. Basic Design Methodology. What is VHDL? Requirements
What is Verilog HDL? Lecture 1: Verilog HDL Introduction Verilog Hardware Description Language(HDL)? A high-level computer language can model, represent and simulate digital design Hardware concurrency
Overview. Ram vs Register. Register File. Introduction to Structured VLSI Design. Recap Operator Sharing FSMD Counters.
Overview Introduction to Structured VLSI Design VHDL V Recap Operator Sharing FSMD Counters Joachim Rodrigues Ram vs Register Register File RAM characteristics RAM cell designed at transistor level Cell
VHDL in 1h. Martin Schöberl
VHDL in 1h Martin Schöberl VHDL /= C, Java, Think in hardware All constructs run concurrent Different from software programming Forget the simulation explanation VHDL is complex We use only a small subset
VHDL simulation and synthesis
VHDL simulation and synthesis How we treat VHDL in this course You will not become an expert in VHDL after taking this course The goal is that you should learn how VHDL can be used for simulation and synthesis
UNIT I Introduction to VHDL VHDL: - V -VHSIC, H - Hardware, D - Description, L Language Fundamental section of a basic VHDL code Library :
UNIT I Introduction to VHDL VHDL stands for very high-speed integrated circuit hardware description language. Which is one of the programming languages used to model a digital system by dataflow, behavioral
ECE 545 Lecture 9. Modeling of Circuits with a Regular Structure. Aliases, Attributes, Packages. George Mason University
ECE 545 Lecture 9 Modeling of Circuits with a Regular Structure Aliases, Attributes, Packages George Mason University Required reading P. Chu, RTL Hardware Design using VHDL Chapters 14.5 For Generate
JUNE, JULY 2013 Fundamentals of HDL (10EC45) PART A
JUNE, JULY 2013 Fundamentals of HDL (10EC45) Time: 3hrs Max Marks:100 Note: Answer FIVE full questions, selecting at least TWO questions from each part. PART A Q1.a. Describe VHDL scalar data types with
CprE 583 Reconfigurable Computing
Recap Moore FSM Example CprE / ComS 583 Reconfigurable Computing Moore FSM that recognizes sequence 10 0 1 0 1 S0 / 0 S1 / 0 1 S2 / 1 Prof. Joseph Zambreno Department of Electrical and Computer Engineering
ECE 545 Lecture 6. Behavioral Modeling of Sequential-Circuit Building Blocks. Behavioral Design Style: Registers & Counters.
ECE 55 Lecture 6 Behavioral Modeling of Sequential-Circuit Building Blocks Required reading P. Chu, RTL Hardware esign using VHL Chapter 5.1, VHL Process Chapter 8, Sequential Circuit esign: Principle
Modeling Complex Behavior
Modeling Complex Behavior Sudhakar Yalamanchili, Georgia Institute of Technology, 2006 (1) Outline Abstraction and the Process Statement Concurrent processes and CSAs Process event behavior and signals
Computer-Aided Digital System Design VHDL
بس م اهلل الر حم ن الر حی م Iran University of Science and Technology Department of Computer Engineering Computer-Aided Digital System Design VHDL Ramin Rajaei ramin_rajaei@ee.sharif.edu Modeling Styles
Part 4: VHDL for sequential circuits. Introduction to Modeling and Verification of Digital Systems. Memory elements. Sequential circuits
M1 Informatique / MOSIG Introduction to Modeling and erification of Digital Systems Part 4: HDL for sequential circuits Laurence PIERRE http://users-tima.imag.fr/amfors/lpierre/m1arc 2017/2018 81 Sequential
Experiment 8 Introduction to VHDL
Experiment 8 Introduction to VHDL Objectives: Upon completion of this laboratory exercise, you should be able to: Enter a simple combinational logic circuit in VHDL using the Quartus II Text Editor. Assign
EEL 4783: Hardware/Software Co-design with FPGAs
EEL 4783: Hardware/Software Co-design with FPGAs Lecture 9: Short Introduction to VHDL* Prof. Mingjie Lin * Beased on notes of Turfts lecture 1 What does HDL stand for? HDL is short for Hardware Description
Synthesis of Combinational and Sequential Circuits with Verilog
Synthesis of Combinational and Sequential Circuits with Verilog What is Verilog? Hardware description language: Are used to describe digital system in text form Used for modeling, simulation, design Two
VHDL VS VERILOG.
1 VHDL VS VERILOG http://www.cse.cuhk.edu.hk/~mcyang/teaching.html 2 VHDL & Verilog They are both hardware description languages for modeling hardware. They are each a notation to describe the behavioral
ECE 3401 Lecture 10. More on VHDL
ECE 3401 Lecture 10 More on VHDL Outline More on VHDL Some VHDL Basics Data Types Operators Delay Models VHDL for Simulation VHDL for Synthesis 1 Data Types Every signal has a type, type specifies possible
Synthesizable Verilog
Synthesizable Verilog Courtesy of Dr. Edwards@Columbia, and Dr. Franzon@NCSU http://csce.uark.edu +1 (479) 575-6043 yrpeng@uark.edu Design Methodology Structure and Function (Behavior) of a Design HDL
Two HDLs used today VHDL. Why VHDL? Introduction to Structured VLSI Design
Two HDLs used today Introduction to Structured VLSI Design VHDL I VHDL and Verilog Syntax and ``appearance'' of the two languages are very different Capabilities and scopes are quite similar Both are industrial
Verilog Design Principles
16 h7fex // 16-bit value, low order 4 bits unknown 8 bxx001100 // 8-bit value, most significant 2 bits unknown. 8 hzz // 8-bit value, all bits high impedance. Verilog Design Principles ECGR2181 Extra Notes
Review of Digital Design with VHDL
Review of Digital Design with VHDL Digital World Digital world is a world of 0 and 1 Each binary digit is called a bit Eight consecutive bits are called a byte Hexadecimal (base 16) representation for
Verilog. What is Verilog? VHDL vs. Verilog. Hardware description language: Two major languages. Many EDA tools support HDL-based design
Verilog What is Verilog? Hardware description language: Are used to describe digital system in text form Used for modeling, simulation, design Two major languages Verilog (IEEE 1364), latest version is
EECE-4740/5740 Advanced VHDL and FPGA Design. Lecture 3 Concurrent and sequential statements
EECE-4740/5740 Advanced VHDL and FPGA Design Lecture 3 Concurrent and sequential statements Cristinel Ababei Marquette University Department of Electrical and Computer Engineering Overview Components hierarchy
CCE 3202 Advanced Digital System Design
CCE 3202 Advanced Digital System Design Lab Exercise #2 Introduction You will use Xilinx Webpack v9.1 to allow the synthesis and creation of VHDLbased designs. This lab will outline the steps necessary
Hardware Modeling. VHDL Syntax. Vienna University of Technology Department of Computer Engineering ECS Group
Hardware Modeling VHDL Syntax Vienna University of Technology Department of Computer Engineering ECS Group Contents Identifiers Types & Attributes Operators Sequential Statements Subroutines 2 Identifiers