The Designer's Guide to VHDLElsevier, 2001. gada 5. jūn. - 759 lappuses Since the publication of the first edition of The Designer's Guide to VHDL in 1996, digital electronic systems have increased exponentially in their complexity, product lifetimes have dramatically shrunk, and reliability requirements have shot through the roof. As a result more and more designers have turned to VHDL to help them dramatically improve productivity as well as the quality of their designs. VHDL, the IEEE standard hardware description language for describing digital electronic systems, allows engineers to describe the structure and specify the function of a digital system as well as simulate and test it before manufacturing. In addition, designers use VHDL to synthesize a more detailed structure of the design, freeing them to concentrate on more strategic design decisions and reduce time to market. Adopted by designers around the world, the VHDL family of standards have recently been revised to address a range of issues, including portability across synthesis tools. This best-selling comprehensive tutorial for the language and authoritative reference on its use in hardware design at all levels--from system to gates--has been revised to reflect the new IEEE standard, VHDL-2001. Peter Ashenden, a member of the IEEE VHDL standards committee, presents the entire description language and builds a modeling methodology based on successful software engineering techniques. Reviewers on Amazon.com have consistently rated the first edition with five stars. This second edition updates the first, retaining the authors unique ability to teach this complex subject to a broad audience of students and practicing professionals. |
No grāmatas satura
6.–10. rezultāts no 92.
... specifies which values may be stored in objects of the type. The syntax rule for a type declaration is ... specify that ports may take only the values '0' and '1'. If we define our own types for ports, the type names must ...
... specify the bounds of the range, the values used in the expression must be locally static; that is, they must be known when the model is analyzed. For example, we can use constant values in an expression as part of a range definition ...
... specify secondary units in a physical type declaration. We do this by indicating how many primary units comprise a secondary unit. Our declaration for the resistance type can now be extended: type resistance is range 0 to 1E9 units ohm ...
... it is used extensively to specify delays. Its definition is type time is range implementation defined units fs; ps = 1000 fs; ns = 1000 ps; us = 1000 ns; ms = 1000 us; sec = 1000 ms; min = 60 sec; hr = 2.2 Scalar Types 39.
... specify explicitly which type is meant. We can do this using type qualification, which consists of writing the type name followed by a single quote character, then an expression enclosed in parentheses. For example, given the ...
Saturs
1 | |
29 | |
57 | |
85 | |
107 | |
A Pipelined Multiplier Accumulator | 167 |
Chapter 7 Subprograms | 195 |
Chapter 8 Packages and Use Clauses | 231 |
Chapter 17 Access Types and Abstract Data Types | 487 |
Chapter 18 Files and InputOutput | 515 |
Queuing Networks | 549 |
Chapter 20 Attributes and Groups | 585 |
Chapter 21 Miscellaneous Topics | 615 |
Chapter A Synthesis | 639 |
Chapter B The Predefined Package Standard | 655 |
Chapter C IEEE Standard Packages | 659 |
Chapter 9 Aliases | 257 |
A BitVector Arithmetic Package | 267 |
Chapter 11 Resolved Signals | 285 |
Chapter 12 Generic Constants | 309 |
Chapter 13 Generic Constants Components and Configurations | 317 |
Chapter 14 Generate Statements | 349 |
The DLX Computer System | 373 |
Chapter 16 Guards and Blocks | 459 |
Chapter D Related Standards | 671 |
Chapter E VHDL Syntax | 683 |
Chapter F Differences among VHDL87 VHDL93 and VHDL2001 | 697 |
Chapter G Answers to Exercises | 703 |
Chapter H Software Guide | 723 |
References | 743 |
Index | 745 |
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