IPT-DSPBUILDER Altera, IPT-DSPBUILDER Datasheet - Page 180

• Manufacturer Part Number: IPT-DSPBUILDER
• Description: DSP BUILDER SOFTWARE
• Manufacturer: Altera
• Type: DSPr

Specifications of IPT-DSPBUILDER

• Function: DSP Builder
• License: Initial License
• Software Application: IP CORE, DSP BUILDER
• Core Architecture: FPGA
• Core Sub-architecture: Arria, Cyclone, Stratix
• Supported Families: Arria GX, Arria II GX, Cyclone, Stratix
• Rohs Compliant: NA
• Lead Free Status / RoHS Status: Not applicable / Not applicable

13–4
Loop Detected While Propagating Bit Widths
The MegaCore Functions Library Does Not Appear in Simulink
DSP Builder Standard Blockset User Guide
This command returns the path that the QUARTUS_ROOTDIR environment variable
specifies. For example:
If You Still Cannot Get a License
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You may get an error if you have a feedback loop in your design and you have not
explicitly defined the feedback loop’s bit width.
Figure 13–1. Feedback Loop With Unresolved Width Error
To avoid this error, include an AltBus block configured as an internal node to specify
the bit width in the feedback loop explicitly
Figure 13–2. Feedback Loop With AltBus Block as an Internal Node
The Simulink Library Browser may not display MegaCore functions library if you
install DSP Builder before you install the Altera MegaCore IP Library.
To fix this problem, type the following command after you instal the Altera MegaCore
IP Library:
C:\altera\81\quartus
Try adding the following paths to your system path:
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Remove and reinstall DSP Builder. After removing DSP Builder, delete any
DSP Builder files or directories that remain in the file system to ensure that you
re-install a clean file set.
alt_dspbuilder_setup_megacore r
quartus/bin
matlab/bin
Preliminary
(Figure
Figure 13–1
13–2).
shows this error.
© June 2010 Altera Corporation
Troubleshooting Issues
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