参数资料
型号: IP-FIR
厂商: Altera
文件页数: 52/76页
文件大小: 0K
描述: IP FIR COMPILER
标准包装: 1
系列: *
类型: MegaCore
功能: 有限脉冲响应编译器
许可证: 初始许可证
4–10
Chapter 4: Functional Description
FIR Compiler
Because the FIR Compiler is an automated design tool, it is possible to implement a
multichannel, multiple coefficient set interpolation or decimation filter (which is
further implemented as a multichannel, multiple coefficient set structure).
The net result of these optimization techniques is a general savings in resources.
Implementation Details for Interpolation and Decimation Structures
Figure 4–9 and 4–14 illustrate the results when applying polyphase decomposition to
interpolation and decimation filters.
Figure 4–9. Interpolation Filter Structure
input
N
LPF
output
N Channel
input
P(0)
output
input
N Coefficient Set
output
Single Rate FIR Filter
P(1)
Control
Circuitry
P(2)
P(N-1)
Figure 4–9 illustrates an interpolation structure. It takes a constant number of clocks
to compute each polyphase output. The input data must be held for the number of
clocks to compute each polyphase output multiplied by the number of polyphase
units (which is the same as the interpolation factor).
Figure 4–10 on page 4–11 shows a decimation filter (with polyphase decomposition).
Each polyphase filter must be computed prior to computing the final results. Because
there are several polyphase results that must be accumulated, it is clear that the
output will update every N clocks, where N = number of polyphase filters × number
of clocks to compute each polyphase result.
1
The number of polyphase filters is equal to the decimation factor. The input data must
be held for the time it takes to compute a single polyphase filter.
? May 2011 Altera Corporation
相关PDF资料
PDF描述
IP-NCO IP NCO COMPILER
IP-NIOS IP NIOS II MEGACORE
IP-PCI/MT64 IP PCI 64BIT MASTER/TARGET
IP-PCIE/8 IP PCI EXPRESS, X8
IP-POSPHY4 IP POS-PHY L4
相关代理商/技术参数
参数描述
IP-FIRII 功能描述:开发软件 FIR Compiler II MegaCore RoHS:否 制造商:Atollic Inc. 产品:Compilers/Debuggers 用于:ARM7, ARM9, Cortex-A, Cortex-M, Cortex-R Processors
IPFLBPT2 制造商:Carlo Gavazzi 功能描述:IL 35MM MUSH P-P PL 22MM RED
IPG1-0-90 制造商:Sensata Technologies 功能描述:1 Pole
IPG1-1-41-203-90 制造商:Sensata Technologies 功能描述:1 Pole
IPG1-1-51-103-A-00-V 制造商:Sensata Technologies 功能描述:Circuit Breaker Magnetic 1Pole 10A 65VDC