Altera FIR Compiler Manuale Utente Scaricare il pdf (Pagina 7)

Chapter 1: About the FIR Compiler 1–3

Features

■ Automatically generating the code required for the Quartus II software to

synthesize high-speed, area-efficient FIR filters of various architectures.

■ Generating a VHDL testbench for all architectures.

Figure 1–3 compares the design cycle using a FIR Compiler with a traditional

implementation.

Features

The Altera

FIR Compiler implements a finite impulse response (FIR) filter MegaCore

function and supports the following features:

■ The following hardware architectures are supported to enable optimal trade- offs

between logic, memory, DSP blocks, and performance:

■ Fully parallel distributed arithmetic

■ Fully serial distributed arithmetic

■ Multibit serial distributed arithmetic

■ Multicycle variable structures

■ Exploit maximal efficiency designs as a result of FIR Compiler hardware

optimizations such as interpolation, decimation, symmetry, decimation half-band,

and time sharing.

■ Easy system integration using Avalon

Streaming (Avalon-ST) interfaces.

Figure 1–3. Design Cycle Comparison

Define & Design Architectural

Blocks

Determine Behavioral

Characteristics of FIR Filter

Calculate Filter Coefficients

(MATLAB)

Determine Hardware Filter

Architecture

Design Structural or Synthesizable

FIR Filter

Simulate

Synthesize & Place & Route

Area/Speed Tradeoff

FIR Filter

Design

6 Weeks

Define & Design Architectural

Blocks

Simulate

Synthesize & Place & Route

FIR Filter Design

1 Day

Specify Filter Characteristics

to FIR Compiler Megafunction

(FIR Compiler Assists in Area/

Speed Tradeoff)

Traditional Flow

FIR Compiler Flow

1 2 3 4 5 6 7 8 9 10 11 12 ... 75 76

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Altera FIR Compiler Manuale Utente Pagina 7

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