參數(shù)資料
型號(hào)： lpm-constant
廠商： Altera Corporation
英文描述： Parameterized Constant Generator(參數(shù)確定的常量發(fā)生器)
中文描述： 參數(shù)化常數(shù)發(fā)生器（參數(shù)確定的常量發(fā)生器）
文件頁(yè)數(shù)： 6/48頁(yè)
文件大?。?/td> 293K
代理商： LPM-CONSTANT
Altera Corporation
1
Introduction
December 1996
Overview
Digital logic designers today must create designs consisting of tens-of-
thousands of gates while meeting increased pressure to shorten time-to-
market. At the same time, designers must maintain architecture-
independence without sacrificing silicon efficiency.
Meeting these requirements with today’s EDA software tools is not easy.
Schematic-based design entry provides superior efficiency but
implements architecture-dependent, low-level functions. High-level
hardware description languages (HDLs) offer architecture-independence,
but offer reduced silicon efficiency and performance.
Because a standard set of functions supported by all EDA and integrated
circuit (IC) vendors was not previously available, bridging the gap
between architecture-independence and efficiency was difficult.
However, with the introduction of EDA software tools that support the
library of parameterized modules (LPM), designers can now create
architecture-independent designs that have high silicon efficiency.
History of LPM
The LPM standard was proposed in 1990 to enable efficient mapping of
digital designs to diverse architectures such as programmable logic
devices (PLDs), gate arrays, and standard cells. The LPM was accepted as
an Electronic Industries Association (EIA) Interim standard in April 1993
as an adjunct standard to the Electronic Design Interface Format (EDIF),
an industry-standard syntax that describes a structural netlist. EDIF can
be used to transfer designs between the different software tools of EDA
vendors and from EDA tools to IC tools. LPM functions describe the
logical operation of the netlist. LPM functions used in a design can be
directly passed to the IC vendor’s design implementation software
through an EDIF netlist file. Before the arrival of the LPM standard, each
EDIF netlist would typically contain architecture-specific logic functions,
which made architecture-independent design impossible.
LPM functions are compatible with any text or graphic design entry tool,
and are supported by Altera
through MAX+PLUS
tool vendors, including Cadence, Exemplar, Mentor Graphics, MINC,
Summit Design, Synopsys, VeriBest, and Viewlogic. Altera has supported
the standard since 1993, and many other silicon companies will support
the LPM standard by the end of 1997.
II and major EDA
相關(guān)PDF資料
PDF描述
lpm-decode Parameterized Decoder(參數(shù)確定的解碼器)
lpm-counter Parameteruzed Absolute Value(參數(shù)確定的計(jì)數(shù)器)
lpm-compare Parameteruzed Comparator(參數(shù)確定的比較器)
lpm-latch Parameteruzed Latch(參數(shù)確定的鎖存器)
lpm-bustri Parameterized Tri-State Buffer(參數(shù)確定的三態(tài)緩沖器)
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