About the FIR II IP Core.....................................................................................1-1
FIR II IP Core Getting Started............................................................................2-1
Altera DSP IP Core Features...................................................................................................................... 1-1
FIR II IP Core Features............................................................................................................................... 1-2
DSP IP Core Device Family Support.........................................................................................................1-2
DSP IP Core Verification............................................................................................................................1-3
FIR II IP Core Release Information...........................................................................................................1-3
FIR II IP Core Performance and Resource Utilization...........................................................................1-3
Installing and Licensing IP Cores..............................................................................................................2-1
OpenCore Plus IP Evaluation........................................................................................................ 2-1
FIR II IP Core OpenCore Plus Timeout Behavior...................................................................... 2-2
IP Catalog and Parameter Editor...............................................................................................................2-2
Specifying IP Core Parameters and Options............................................................................................2-3
Files Generated for Altera IP Cores...............................................................................................2-5
Simulating Altera IP Cores in other EDA Tools..................................................................................... 2-8
The Altera® FIR II IP core provides a fully-integrated finite impulse response (FIR) filter function
optimized for use with Altera FPGA devices. The II IP core has an interactive parameter editor that allows
you to easily create custom FIR filters. The parameter editor outputs IP functional simulation model files
for use with Verilog HDL and VHDL simulators.
You can use the parameter editor to implement a variety of filter types, including single rate, decimation,
interpolation, and fractional rate filters.
Many digital systems use signal filtering to remove unwanted noise, to provide spectral shaping, or to
perform signal detection or analysis. FIR filters and infinite impulse response (IIR) filters provide these
functions. Typical filter applications include signal preconditioning, band selection, and low-pass
filtering.
Figure 1-1: Basic FIR Filter with Weighted Tapped Delay Line
To design a filter, identify coefficients that match the frequency response you specify for the system. These
coefficients determine the response of the filter. You can change which signal frequencies pass through
the filter by changing the coefficient values in the parameter editor.
2015 Altera Corporation. All rights reserved. ALTERA, ARRIA, CYCLONE, ENPIRION, MAX, MEGACORE, NIOS, QUARTUS and STRATIX words and logos are
trademarks of Altera Corporation and registered in the U.S. Patent and Trademark Office and in other countries. All other words and logos identified as
trademarks or service marks are the property of their respective holders as described at www.altera.com/common/legal.html. Altera warrants performance
of its semiconductor products to current specifications in accordance with Altera's standard warranty, but reserves the right to make changes to any
products and services at any time without notice. Altera assumes no responsibility or liability arising out of the application or use of any information,
product, or service described herein except as expressly agreed to in writing by Altera. Altera customers are advised to obtain the latest version of device
specifications before relying on any published information and before placing orders for products or services.
ISO
9001:2008
Registered
1-2
FIR II IP Core Features
• Avalon® Streaming (Avalon-ST) interfaces
• DSP Builder ready
• Testbenches to verify the IP core
• IP functional simulation models for use in Altera-supported VHDL and Verilog HDL simulators
FIR II IP Core Features
• Exploiting maximal designs efficiency through hardware optimizations such as:
• Interpolation
• Decimation
• Symmetry
• Decimation half-band
• Time sharing
• Easy system integration using Avalon Streaming (Avalon-ST) interfaces.
• Memory and multiplier trade-offs to balance the implementation between logic elements (LEs) and
memory blocks (M512, M4K, M9K, M10K, M20K, or M144K).
• Support for run-time coefficient reloading capability and multiple coefficient banks.
• User-selectable output precision via truncation, saturation, and rounding.
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DSP IP Core Device Family Support
Altera offers the following device support levels for Altera IP cores:
• Preliminary support—Altera verifies the IP core with preliminary timing models for this device family.
The IP core meets all functional requirements, but might still be undergoing timing analysis for the
device family. You can use it in production designs with caution.
• Final support—Altera verifies the IP core with final timing models for this device family. The IP core
meets all functional and timing requirements for the device family. You can use it in production
designs.
Table 1-1: DSP IP Core Device Family Support
Device FamilySupport
Arria® II GXFinal
Arria II GZFinal
Arria VFinal
Arria 10Final
Cyclone® IVFinal
Cyclone VFinal
MAX® 10 FPGAFinal
Stratix® IV GTFinal
Stratix IV GX/EFinal
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Device FamilySupport
Stratix VFinal
Other device familiesNo support
DSP IP Core Verification
Before releasing a version of an IP core, Altera runs comprehensive regression tests to verify its quality
and correctness. Altera generates custom variations of the IP core to exercise the various parameter
options and thoroughly simulates the resulting simulation models with the results verified against master
simulation models.
FIR II IP Core Release Information
Use the release information when licensing the IP core.
Table 1-2: Release Information
ItemDescription
DSP IP Core Verification
1-3
Version14.1
Release DateDecember 2014
Ordering CodeIP-FIRII
Product ID00D8
Vendor ID6AF7
Altera verifies that the current version of the Quartus II software compiles the previous version of each IP
core. Altera does not verify that the Quartus II software compiles IP core versions older than the previous
version. The Altera IP Release Notes lists any exceptions.
Related Information
• Altera IP Release Notes
• Errata for FIR II IP core in the Knowledge Base
FIR II IP Core Performance and Resource Utilization
Table 1-3: FIR II IP Core Performance—Arria V Devices
Typical expected performance using the Quartus II software with Arria V (5AGXFB3H4F40C4).
quartus - Contains the Quartus II software
ip - Contains the Altera IP Library and third-party IP cores
altera - Contains the Altera IP Library source code
<IP core name> - Contains the IP core source files
www.altera.com
101 Innovation Drive, San Jose, CA 95134
FIR II IP Core Getting Started
2
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Installing and Licensing IP Cores
The Altera IP Library provides many useful IP core functions for your production use without purchasing
an additional license. Some Altera MegaCore® IP functions require that you purchase a separate license
for production use. However, the OpenCore® feature allows evaluation of any Altera IP core in simulation
and compilation in the Quartus® II software. After you are satisfied with functionality and perfformance,
visit the Self Service Licensing Center to obtain a license number for any Altera product.
Figure 2-1: IP Core Installation Path
Note:
The default IP installation directory on Windows is <drive>:\altera\<version number>; on Linux it is
<home directory>/altera/ <version number>.
Related Information
• Altera Licensing Site
• Altera Software Installation and Licensing Manual
OpenCore Plus IP Evaluation
Altera's free OpenCore Plus feature allows you to evaluate licensed MegaCore IP cores in simulation and
hardware before purchase. You need only purchase a license for MegaCore IP cores if you decide to take
your design to production. OpenCore Plus supports the following evaluations:
2015 Altera Corporation. All rights reserved. ALTERA, ARRIA, CYCLONE, ENPIRION, MAX, MEGACORE, NIOS, QUARTUS and STRATIX words and logos are
trademarks of Altera Corporation and registered in the U.S. Patent and Trademark Office and in other countries. All other words and logos identified as
trademarks or service marks are the property of their respective holders as described at www.altera.com/common/legal.html. Altera warrants performance
of its semiconductor products to current specifications in accordance with Altera's standard warranty, but reserves the right to make changes to any
products and services at any time without notice. Altera assumes no responsibility or liability arising out of the application or use of any information,
product, or service described herein except as expressly agreed to in writing by Altera. Altera customers are advised to obtain the latest version of device
specifications before relying on any published information and before placing orders for products or services.
ISO
9001:2008
Registered
2-2
FIR II IP Core OpenCore Plus Timeout Behavior
• Simulate the behavior of a licensed IP core in your system.
• Verify the functionality, size, and speed of the IP core quickly and easily.
• Generate time-limited device programming files for designs that include IP cores.
• Program a device with your IP core and verify your design in hardware.
OpenCore Plus evaluation supports the following two operation modes:
• Untethered—run the design containing the licensed IP for a limited time.
• Tethered—run the design containing the licensed IP for a longer time or indefinitely. This requires a
connection between your board and the host computer.
Note: All IP cores that use OpenCore Plus time out simultaneously when any IP core in the design times
out.
FIR II IP Core OpenCore Plus Timeout Behavior
All IP cores in a device time out simultaneously when the most restrictive evaluation time is reached. If
there is more than one IP core in a design, the time-out behavior of the other IP cores may mask the timeout behavior of a specific IP core .
All IP cores in a device time out simultaneously when the most restrictive evaluation time is reached. If
there is more than one IP core in a design, a specific IP core's time-out behavior may be masked by the
time-out behavior of the other IP cores. For IP cores, the untethered time-out is 1 hour; the tethered timeout value is indefinite. Your design stops working after the hardware evaluation time expires. The Quartus
II software uses OpenCore Plus Files (.ocp) in your project directory to identify your use of the OpenCore
Plus evaluation program. After you activate the feature, do not delete these files..
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When the evaluation time expires, the ast_source_data signal goes low.
Related Information
• AN 320: OpenCore Plus Evaluation of Megafunctions
IP Catalog and Parameter Editor
The Quartus II IP Catalog (Tools > IP Catalog) and parameter editor help you easily customize and
integrate IP cores into your project. You can use the IP Catalog and parameter editor to select, customize,
and generate files representing your custom IP variation.
Note:
The IP Catalog (Tools > IP Catalog) and parameter editor replace the MegaWizard™ Plug-In
Manager for IP selection and parameterization, beginning in Quartus II software version 14.0. Use
the IP Catalog and parameter editor to locate and paramaterize Altera IP cores.
The IP Catalog lists installed IP cores available for your design. Double-click any IP core to launch the
parameter editor and generate files representing your IP variation. The parameter editor prompts you to
specify an IP variation name, optional ports, and output file generation options. The parameter editor
generates a top-level Qsys system file (.qsys) or Quartus II IP file (.qip) representing the IP core in your
project. You can also parameterize an IP variation without an open project.
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FIR II IP Core Getting Started
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Search for installed IP cores
Double-click to customize, right-click for
detailed information
Show IP only for target device
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Specifying IP Core Parameters and Options
Use the following features to help you quickly locate and select an IP core:
• Filter IP Catalog to Show IP for active device family or Show IP for all device families. If you have no
project open, select the Device Family in IP Catalog.
• Type in the Search field to locate any full or partial IP core name in IP Catalog.
• Right-click an IP core name in IP Catalog to display details about supported devices, open the IP core's
installation folder, and view links to documentation.
• Click Search for Partner IP, to access partner IP information on the Altera website.
Figure 2-2: Quartus II IP Catalog
2-3
Note: The IP Catalog is also available in Qsys (View > IP Catalog). The Qsys IP Catalog includes
exclusive system interconnect, video and image processing, and other system-level IP that are not
available in the Quartus II IP Catalog. For more information about using the Qsys IP Catalog, refer
to Creating a System with Qsys in the Quartus II Handbook.
Specifying IP Core Parameters and Options
You can quickly configure a custom IP variation in the parameter editor. Use the following steps to
specify IP core options and parameters in the parameter editor. Refer to Specifying IP Core Parametersand Options (Legacy Parameter Editors) for configuration of IP cores using the legacy parameter editor.
FIR II IP Core Getting Started
Send Feedback
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