- 您现在的位置：买卖IC网 > PDF目录16073 > IPR-FFT (Altera)IP FFT/IFFT RENEW PDF资料下载
参数资料
| 型号： | IPR-FFT |
| 厂商： | Altera |
| 文件页数： | 48/70页 |
| 文件大小： | 0K |
| 描述： | IP FFT/IFFT RENEW |
| 标准包装： | 1 |
| 系列： | * |
| 类型： | MegaCore |
| 功能： | 快速傅里叶变换处理器 |
| 许可证： | 续用许可证 |
第1页第2页第3页第4页第5页第6页第7页第8页第9页第10页第11页第12页第13页第14页第15页第16页第17页第18页第19页第20页第21页第22页第23页第24页第25页第26页第27页第28页第29页第30页第31页第32页第33页第34页第35页第36页第37页第38页第39页第40页第41页第42页第43页第44页第45页第46页第47页当前第48页第49页第50页第51页第52页第53页第54页第55页第56页第57页第58页第59页第60页第61页第62页第63页第64页第65页第66页第67页第68页第69页第70页
3–6
Chapter 3: Functional Description
I/O Data Flow Architectures
Complex data samples x[ k , m ] are read from internal memory in parallel and
re-ordered by switch (SW). Next, the ordered samples are processed by the radix-4
butterfly processor to form the complex outputs G[ k , m ]. Because of the inherent
mathematics of the radix-4 DIF decomposition, only three complex multipliers are
required to perform the three non-trivial twiddle-factor multiplications on the outputs
of the butterfly processor. To discern the maximum dynamic range of the samples, the
four outputs are evaluated in parallel by the block-floating point units (BFPU). The
appropriate LSBs are discarded and the complex values are rounded and re-ordered
before being written back to internal memory.
Single-Output FFT Engine Architecture
For applications in which the minimum-size FFT function is desired, a single-output
engine is most suitable. The term single-output again refers to the throughput of the
internal FFT butterfly processor. In the engine architecture, a single butterfly output is
Figure 3–2. Single-Output FFT Engine Architecture
x[k,0]
G[k,0]
FFT Engine
RAM
x[k,1]
x[k,2]
-j
-1
-1
j
-1
G[k,1]
G[k,2]
H[k,m]
BFPU
RAM
j
x[k,3]
-1
-j
G[k,3]
ROM
I/O Data Flow Architectures
This section describes and illustrates the following I/O data flow architectural
options supported by the FFT MegaCore function:
■
■
■
■
f For information about setting the architectural parameters in IP Toolbench, refer to
FFT MegaCore Function
User Guide
November 2013 Altera Corporation
相关PDF资料 |
PDF描述 |
|---|---|
| 10PX2200MEFC10X16 | CAP ALUM 2200UF 10V 20% RADIAL |
| VE-J7L-EZ-F2 | CONVERTER MOD DC/DC 28V 25W |
| 100ZLH68MEFC8X20 | CAP ALUM 68UF 100V 20% RADIAL |
| VE-J7K-EZ-F4 | CONVERTER MOD DC/DC 40V 25W |
| UPA0J681MPD1TD | CAP ALUM 680UF 6.3V 20% RADIAL |
相关代理商/技术参数 |
参数描述 |
|---|---|
| IPR-FIR | 功能描述:开发软件 FIR Compiler MegaCore RENEWAL RoHS:否 制造商:Atollic Inc. 产品:Compilers/Debuggers 用于:ARM7, ARM9, Cortex-A, Cortex-M, Cortex-R Processors |
| IPR-FIRII | 功能描述:开发软件 FIR Compiler II MegaCore RENEWAL RoHS:否 制造商:Atollic Inc. 产品:Compilers/Debuggers 用于:ARM7, ARM9, Cortex-A, Cortex-M, Cortex-R Processors |
| IPRI2CCMFP001 | 制造商:System Level Solutions (SLS) 功能描述:IP CORE, FPGA, I2C CNTLR, FOR CYCLONE, STRATIX, Software Application:IP CORE, In |
| IPR-ILKN/100G | 功能描述:开发软件 Interlaken - 100G MegaCore RENEWAL RoHS:否 制造商:Atollic Inc. 产品:Compilers/Debuggers 用于:ARM7, ARM9, Cortex-A, Cortex-M, Cortex-R Processors |
| IPR-ILKN/50G | 功能描述:开发软件 Interlaken - 50G MegaCore RENEWAL RoHS:否 制造商:Atollic Inc. 产品:Compilers/Debuggers 用于:ARM7, ARM9, Cortex-A, Cortex-M, Cortex-R Processors |
发布紧急采购，3分钟左右您将得到回复。