参数资料
型号: SW-QUARTUS-SE-FIX
厂商: Altera
文件页数: 37/136页
文件大小: 0K
描述: QUARTUS II ANNUAL SUBSCRIPTION
应用说明: Software Licensing App Note
产品培训模块: Quartus II Design Software
标准包装: 1
类型: 设计软件
适用于相关产品: Altera 设备
产品目录页面: 605 (CN2011-ZH PDF)
其它名称: 544-1247
FIXEDPC
C HAPTER 2: D ESIGN E NTRY
U SING A LTERA M EGAFUNCTIONS
Instantiation in Verilog HDL & VHDL
You can use the MegaWizard Plug-In Manager to create a megafunction or
a custom megafunction variation. The MegaWizard Plug-In Manager then
creates a Verilog HDL or VHDL wrapper file that contains an instance of the
megafunction, which you can then use in your design. For VHDL
megafunctions, the MegaWizard Plug-In Manager also creates a
Component Declaration File.
Using the Port & Parameter Definition
You can instantiate the megafunction directly in your Verilog HDL or VHDL
design by calling the function like any other module or component. In
VHDL, you also must use a component declaration.
Inferring Megafunctions
Quartus II Analysis & Synthesis automatically recognizes certain types of
HDL code and infers the appropriate megafunction. The Quartus II software
uses inference because Altera megafunctions are optimized for Altera
devices, and performance may be better than standard HDL code. For some
architecture-specific features, such as RAM and DSP blocks, you must use
Altera megafunctions.
The Quartus II software maps the following logic to megafunctions during
synthesis:
Counters
Adders/Subtractors
Multipliers
Multiply-accumulators and multiply-adders
RAM
Shift registers
Instantiating Megafunctions in EDA
Tools
You can use Altera-provided megafunctions, LPM functions, and IP
functions in EDA design entry and synthesis tools. You can instantiate
megafunctions in EDA tools by creating a black box for the function, by
inference, or by using the clear box methodology.
28
I NTRODUCTION TO THE Q UARTUS II S OFTWARE
A LTERA C ORPORATION
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SWR-10-12 制造商:Raxxess 功能描述:Wall Mount 10RU Hinged Rack with 12" Usable Depth