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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:
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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.
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I NTRODUCTION TO THE Q UARTUS II S OFTWARE
A LTERA C ORPORATION
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相关PDF资料
SW-QUARTUS-SE-FLT SUBSCRIPTION FLOATALL REPL
SW006012 C COMPILER FOR DSPIC30F FAMILY
SW006013 C COMPILER MPLAB FOR DSPIC DSC
SW006015 C COMPILER MPLAB C32
SW300003-EVAL LIBRARY SOFT MODEM-EVAL ONLY
SW300010-EVAL SPEECH RECOG LIBRARY-EVAL ONLY
SW300040-EVAL LIBRARY NOISE SUPPR-EVAL ONLY
SW300060-EVAL LIBRARY ACOUSTIC ECHO-EVAL ONLY
相关代理商/技术参数
SW-QUARTUS-SE-FLT 功能描述:开发软件 FLOATING LICENSE FOR QUARTUS II RoHS:否 制造商:Atollic Inc. 产品:Compilers/Debuggers 用于:ARM7, ARM9, Cortex-A, Cortex-M, Cortex-R Processors
SWR 制造商:RUBYCON 制造商全称:RUBYCON CORPORATION 功能描述:METALLIZED POLYESTER FILM CAPACITORS
SWR-1 制造商:Sunhayato 功能描述:
SWR100MD 功能描述:基准电压& 基准电流 Sine Wave Ref. Custom RoHS:否 制造商:STMicroelectronics 产品:Voltage References 拓扑结构:Shunt References 参考类型:Programmable 输出电压:1.24 V to 18 V 初始准确度:0.25 % 平均温度系数（典型值）:100 PPM / C 串联 VREF - 输入电压（最大值）: 串联 VREF - 输入电压（最小值）: 分流电流（最大值）:60 mA 最大工作温度:+ 125 C 封装 / 箱体:SOT-23-3L 封装:Reel
SWR-10-12 制造商:Raxxess 功能描述:Wall Mount 10RU Hinged Rack with 12" Usable Depth
SWR1062/C 制造商:BRITOOL 功能描述:RING SPANNER CRANK SLOG 1 1/16AF
SWR1125 制造商:BRITOOL 功能描述:RING SPANNER FLAT SLOG 1 1/8AF
SWR1187 制造商:BRITOOL 功能描述:RING SPANNER FLAT SLOG 1 3/16AF