EP3SE50F780I3N Altera, EP3SE50F780I3N Datasheet - Page 149

• Manufacturer Part Number: EP3SE50F780I3N
• Description: Stratix III
• Manufacturer: Altera

Software
Support
Conclusion
Referenced
Documents
Altera Corporation
October 2007
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Altera provides two distinct methods for implementing various modes of
the DSP block in a design: instantiation and inference. Both methods use
the following Quartus II megafunctions:
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You can instantiate the megafunctions in the Quartus II software to use
the DSP block. Alternatively, with inference, you can create an HDL
design and synthesize it using a third-party synthesis tool (such as
LeonardoSpectrum, Synplify, or Quartus II Native Synthesis) that infers
the appropriate megafunction by recognizing multipliers, multiplier
adders, multiplier accumulators, and shift functions. Using either
method, the Quartus II software maps the functionality to the DSP blocks
during compilation.
Refer to the Quartus II Software Help for instructions about using the
megafunctions and the MegaWizard Plug-In Manager.
For more information, refer to the
Quartus II Development Software Handbook.
The Stratix III device DSP blocks are optimized to support DSP
applications requiring high data throughput, such as FIR filters, IIR
filters, FFT functions, and encoders. These DSP blocks are flexible and can
be configured to implement one of several operational modes to suit a
particular application. The built-in shift register chain, multipliers, and
adders/subtractors minimize the amount of external logic required to
implement these functions, resulting in efficient resource utilization and
improved performance and data throughput for DSP applications. The
Quartus II software, used with the LeonardoSpectrum and Synplify
software, provide a complete and easy-to-use flow for implementing
these multiplier functions in the DSP blocks.
This chapter references the following document:
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lpm_mult
altmult_add
altmult_accum
altfp_mult
Synthesis
Synthesis
Stratix III Device Handbook, Volume 1
DSP Blocks in Stratix III Devices
section in volume 1 of the
5–49