... 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 ... Altera Quartus II Tutorial 343
Appendix E: VHDL Reserved Words 355
Bibliography 357
Index 359
x Contents
TLFeBOOK
with VHDL
Volnei A. Pedroni
Circuit Design
TLFeBOOK
To Claudia, Patricia, Bruno, ... 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...
... 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...
...
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...
... 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...
... 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...
... CMOS Analog CircuitDesign Page II.0-3
OBJECTIVE
ã Provide an understanding of CMOS technology sufficient to enhance
circuit design.
ã Characterize passive components compatible with basic technologies.
ã ... Holberg - CMOS Analog CircuitDesign II.5-6
IMPROVED LAYOUT METHODS FOR CAPACITORS
Corner clipping:
Clip
corners
Street-effect compensation:
Allen and Holberg - CMOS Analog CircuitDesign Page II.1-6
Etching
Etching ... Allen and Holberg - CMOS Analog CircuitDesign Page I.2-1
I.1 - INTRODUCTION
GLOBAL OBJECTIVES
ã Teach the analysis, modeling, simulation, and design of analog circuits
implemented in CMOS technology.
ã...
... 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...
... 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 ... up
to 300 or 550 meters with low cost 850 nm serial applications.
10 Gb/s reliable transmission, design flexibility
The Three Principles of Data Center Infrastructure Design
Page 4
As networks ... risk of down time with the ability to isolate
network segments for troubleshooting and quickly
reroute circuits in a disaster recovery situation.
Deploying common rack frames with ample vertical...