29-03-2014, 02:47 PM
VHDL
VHDL111111111.ppt (Size: 164 KB / Downloads: 17)
Shortly About the VHDL
VHDL is an acronym of VHSIC Hardware Description Language
VHSIC is an acronym of Very High Speed Integrated Circuits
A Formal Language for Specifying the Behavior and Structure of a Digital Circuit
Allows Top-Down Design
VHDL for Simulation & Synthesis
VHDL requirements for Simulation
Creation of test benches =>
File I/O
Detection of errors (function & timing)
Multiple simultaneous models
Combination of low & high level models
(for efficiency)
New possibilities
VHDL frees the designer from having to use von Neumann structures
(Neumann János = John von Neumann)
It allows him to work with real concurrency instead of sequential machines
This opens up completely new possibilities for the designer
Origin of the VHDL
VHDL originated in the early 1980s
The American Department of Defense initiated the development of VHDL in the early 1980s
because the US military needed a standardized method of describing electronic systems
VHDL was standardized in 1987 by the IEEE
It is now accepted as one of the most important standard languages for
specifying
verifying
designing of electronics
Analog world
VHDL has not yet been standardized for analog electronics
Standardization is in progress on VHDL with an analog extension (AHDL) to allow analog systems to be described as well
This new standard will be based wholly on the VHDL standard and will have a number of additions for describing analog functions
VHDL111111111.ppt (Size: 164 KB / Downloads: 17)
Shortly About the VHDL
VHDL is an acronym of VHSIC Hardware Description Language
VHSIC is an acronym of Very High Speed Integrated Circuits
A Formal Language for Specifying the Behavior and Structure of a Digital Circuit
Allows Top-Down Design
VHDL for Simulation & Synthesis
VHDL requirements for Simulation
Creation of test benches =>
File I/O
Detection of errors (function & timing)
Multiple simultaneous models
Combination of low & high level models
(for efficiency)
New possibilities
VHDL frees the designer from having to use von Neumann structures
(Neumann János = John von Neumann)
It allows him to work with real concurrency instead of sequential machines
This opens up completely new possibilities for the designer
Origin of the VHDL
VHDL originated in the early 1980s
The American Department of Defense initiated the development of VHDL in the early 1980s
because the US military needed a standardized method of describing electronic systems
VHDL was standardized in 1987 by the IEEE
It is now accepted as one of the most important standard languages for
specifying
verifying
designing of electronics
Analog world
VHDL has not yet been standardized for analog electronics
Standardization is in progress on VHDL with an analog extension (AHDL) to allow analog systems to be described as well
This new standard will be based wholly on the VHDL standard and will have a number of additions for describing analog functions