参数资料
| 型号： | COREFIR-RM |
| 厂商： | Microsemi SoC |
| 文件页数： | 4/67页 |
| 文件大小： | 0K |
| 描述： | IP MODULE COREFIR |
| 标准包装： | 1 |
| 系列： | * |
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Introduction
Core Overview
The finite impulse response (FIR) filter is one of the most essential building blocks in digital signal
processing (DSP) systems. Digital filters have been used in many systems to remove unwanted noise,
improve signal quality, or shape signal spectrum.
CoreFIR provides a configurable high performance multiplier-accumulator (MAC)-based FIR filter. The core
is available as a register transfer level (RTL) code of the filter, both in Verilog and VHDL languages.
The core implements a range of filter types:
? Single-rate
? Fully enumerated (parallel)
? Folded (semi-parallel)
? Multi-rate
? Polyphase interpolation
? Polyphase decimation
???1
??=0
?? ( ?? ) = ? ?? ( ?? ? ?? ) ?? ( ?? ) = ?? ( ?? ) ?? ( 0 ) + ?? ( ?? ? 1 ) ?? ( 1 ) + ? + ?? ( ?? ? ?? + 1 ) ?? ( ?? ? 1 )
EQ 1
A series of coefficients c(0), c(1), c(2), …, c(N-1) are the filter impulse response. The coefficient values
define whether the filter is a low-pass, band-pass, or high-pass filter. The fully enumerated filter type has as
many physical MACs as filter taps. Such architecture provides the fastest input sample rate. The folded filter
utilizes fewer physical MACs, taking advantage of a ratio between high clock rate and a slower input sample
rate. It reuses the MACs over vacant clock intervals to process the input samples.
Figure 1 shows the single rate filter functional block diagram. The figure presents only a general notion of a
digital filter computational component. An actual realization can be quite different. This handbook contains
chapters dedicated to every filter type. Refer to the specific chapter for more information on each particular
type.
x(i)
c(0)
z -1
c(1)
z -1
c(2)
z -1
c(3)
z -1
c(N-1)
y(k)
Figure 1 · Single-Rate FIR Filter Functional Block Diagram
CoreFIR supports the following three filter coefficient modes:
? Constant coefficient
? Multiple constant coefficient sets
? Reloadable coefficient
CoreFIR v8.5 Handbook
5
相关PDF资料 |
PDF描述 |
|---|---|
| COREPCIF-RM | IP MODULE COREPCIF |
| COREU1LL-AR | IP MODULE COREU1LL |
| COREU1PHY-AR | IP MODULE COREU1PHY |
| CORR-8BIT-XM-UT2 | SITE LICENSE IP CORRELATOR XP |
| CP2-GSA-L | CONN SHIELD LOWER TYPE A 22 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| COREFIR-UR | 制造商:ACTEL 制造商全称:Actel Corporation 功能描述:CoreFIR Finite Impulse Response (FIR) Filter Generator |
| COREFIR-XX | 制造商:ACTEL 制造商全称:Actel Corporation 功能描述:CoreFIR Finite Impulse Response (FIR) Filter Generator |
| COREMP7 | 制造商:ACTEL 制造商全称:Actel Corporation 功能描述:CoreMP7 |
| COREPCI-AN | 制造商:ACTEL 制造商全称:Actel Corporation 功能描述:CorePCI v5.41 |
| COREPCI-AR | 制造商:ACTEL 制造商全称:Actel Corporation 功能描述:CorePCI v5.41 |
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