... Cataloging-in-Publication Data
Pedroni, Volnei A.
Circuit designwith VHDL/ Volnei A. Pedroni.
p. cm.
Includes bibliographical references and index.
ISBN 0-262-16224-5 (alk. paper)
1. VHDL (Computer hardware description ... expected.
1.5 Design Examples
As mentioned in the preface, the book is indeed a design- oriented approach to the
task of teaching VHDL. The integration between VHDL and Digital Design is
achieved ... another.
While books on VHDL give limited emphasis to digital design concepts, and books
on digital design discuss VHDL only briefly, the present work completely integrates
them. It is indeed a design- oriented...
... THEN
d
clk
rst
q
DFF
Figure 2.5
DFF with asynchronous reset.
18 Chapter 2
TLFeBOOK
with VHDL
Volnei A. Pedroni
Circuit Design
Circuit Designwith VHDL
Volnei A. Pedroni
This textbook teaches VHDL using system ... presentation of VHDL and design concepts by
including a large number of complete design examples,
illustrative circuit diagrams, a review of fundamental design
concepts, fully explained solutions, ... complete design examples (rather than sketchy or partial
solutions) are presented;
illustrative top-level circuit diagrams are always shown;
fundamental design concepts are reviewed;
the solutions...
... Chapter 3
TLFeBOOK
with VHDL
Volnei A. Pedroni
Circuit Design
TLFeBOOK
1Introduction
1.1 About VHDL
VHDL is a hardware description language.Itdescribes the behavior of an electronic
circuit or system, ... complete design examples (rather than sketchy or partial
solutions) are presented;
illustrative top-level circuit diagrams are always shown;
fundamental design concepts are reviewed;
the solutions ... Cataloging-in-Publication Data
Pedroni, Volnei A.
Circuit designwith VHDL/ Volnei A. Pedroni.
p. cm.
Includes bibliographical references and index.
ISBN 0-262-16224-5 (alk. paper)
1. VHDL (Computer hardware description...
...
actual circuit and the model.
- There is no continuous assignment equivalent to the
bidirectional transfer gate.
Sequential Circuit
A feedback path
The state of the sequential circuits ... primitives
B – Examples
Combinational Circuit
Sequential Circuit
3
User-Defined Primitives
ã The set of predefined gate primitives by designing and
specifying new primitive elements ... minimum delay value that the designer expects the gate to have
typ The typical delay value that the designer expects the gate to have
max The maximum delay value that the designer expects the gate...
... 1
0
1
10
1
0
10
01
00
11
10
A
BC
C
B
A
F
A
F = AB' + BC + AC
(c) Network with hazard removed
C
E
B
A
D
F
0 1
0
1
10
1
0
10
01
00
11
10
A
BC
F = AB' + BC
1 - Hazard
(a) Network with 1-hazard
B
D
E
F
0 ns 10 ns 20 ns 30 ... inversion
Figure 1-7 Conversion to NOR Gates
(a) AND-OR network
(b) Equivalent NOR-gate network
8
VHDL Processes
General form of Process
process(sensitivity-list)
begin
sequential-statements
end ... (X)
Outputs (Z)
clock
State
Figure 1-16 General Model of Mealy Sequential Machine
4
Figure 2-2 VHDL Program Structure
Entity
Architecture
Entity
Architecture
Module 1
Entity
Architecture
Module...
... For complex design: number of gates is very large
-> need a more effective way to describe circuit
Dataflow model: Level of abstraction is higher than gate-
level, describe the design using ... describe the design using expressions instead of
primitive gates
Circuit is designed in terms of dataflow between register,
how a design processes data rather than instantiation of
individual ... = a^b^cin;
assign cout = (a & b) | (cin & (a^b));
endmodule
ã Lets design 8-bit adder
20
Sequential circuit
4-bit ripple carry counter
22
Expression: Operands
Constant number...
...
Combinational circuit
Sequential circuit
Transistor level design
Gate level design
Register-transfer level design
Behavioral level design
Logic symbol
VHDL
Synthesis ... Microprocessor DesignwithVHDL Chapter 2 - Digital Circuits
43
the focus is on the design of the digital circuitry of the microprocessor, the memory, and other supporting digital
logic circuits. ... Logic Gates and Circuit Diagrams
2.9 Example: Designing a Car Security System
2.10 VHDL for Digital Circuits
2.10.1 VHDL code for a 2-input NAND gate
2.10.2 VHDL code for...
... 2.16. A circuit fragment with gate and wire delays. The output of gate A forks to inputs
of gates B and C.
2.5.2 Classification of asynchronous circuits
At the gate level, asynchronous circuits ... components. If this equivalent circuit model is speed-independent,
then the circuit is delay-insensitive.
Unfortunately the class of delay-insensitive circuits is rather small. Only
circuits composed of ... and arithmetic circuits to provide robust completion indication,
and 4-phase bundled-data with SI control at the top levels of design, i.e. some-
what different from the Amulet designs. This emphasizes...
... circuit are subject to malfunction if a slight
amount of dirt is present.
Designing dehumidification systems for makeup air is a
specialized area of HVAC design engineering. This design
manual ... 1/7/2003
1
MAKEUP AIR
DEHUMIDIFICATION
DESIGN MANUAL
DE/DH 1/7/2003
10
TABLE 4c - PEAK CLIMATE CONDITIONS FOR MAKEUP AIR DEHUMIDIFICATION DESIGN
DB GR/LB DB DB GR/LB DB
STATE/CITY ... from the unit casing
with vibration isolators. Outlet of fan shall be separated from the unit casing with a flexible discharge
connection. V-belt drive shall be furnished with a service factor...
... data
without errors that cause retransmission and delays.
Cabling and connectivity backed by a reputable vendor
with guaranteed error-free performance help avoid
poor transmission within ... years. With
CopperTen in the data center, you won't have to worry
about recabling down the road.
High-performing Category 6 cabling solutions also have
their place in the data center with ... data center. High-density
solutions require less rack, floor, and pathway space,
which leave more room for flexible reconfiguration
and growth.
Figure 1. Data Center with Flexible White Space
Principle...
... Hexadecimal Systems
2-10 Digital Circuit Analysis and Designwith an Introduction to CPLDs and FPGAs
Orchard Publications
Solution:
Replacing all ones with zeros and all zeros with ones we find that the ... introduction to sequential logic circuits. It begins with a
Chapter 2 Operations in Binary, Octal, and Hexadecimal Systems
2-18 Digital Circuit Analysis and Designwith an Introduction to CPLDs ... we add with and the table gives us
i.e., with a carry of . Next we add and , with a carry of , or and , and the table gives
us i.e., with a carry of . Now we add , and (carry) and we get with...
... N = {N
t
,t≥ 0} with intensity λ>0
is a piecewise constant process with stationary independent increments with
initial value N
0
=0such that N
t
− N
s
is Poisson distributed with intensity
λ
t−s
, ... continuous solutions of SDEs. The discrete time approximation of
SDEs with jumps represents the focus of the monograph. The reader learns
about powerful numerical methods for the solution of SDEs with ... difficult circumstances. The book now contains not only
results that we obtained with Nicola on the numerical solution of SDEs with
jumps, but also presents methods for exact simulation, parameter estimation,
filtering...
... 11
Summary 11
Chapter 2: Designing the Layered Architecture 13
The Problem 13
The Design 13
Designing the Visual Studio Solution 13
Designing the Architectural Layers 14
The Solution 18
Implementing ... short, whereas the Design and Solution sections make
up most of the bulk of the chapters. The Solution section will always contain the code that implements
what was designed in the Design section. ... combining interfaces with Generics.
Chapter 10 , “ Synchronizing with the Server ” — In this chapter, I design and implement how to
synchronize the client ’ s offline data with the server. I...