EP4SE360F35I4 Datasheet, PDF (81/432 Pages) Altera Corporation – This section provides a complete overview of all features relating to the Stratix IV device family, which is the most architecturlly advanced

February 2011
SIV51004-3.1
SIV51004-3.1
4. DSP Blocks in Stratix IV Devices
This chapter describes how the Stratix^® IV device digital signal processing (DSP)
blocks are optimized to support DSP applications requiring high data throughput,
such as finite impulse response (FIR) filters, infinite impulse response (IIR) filters, fast
Fourier transform (FFT) functions, and encoders. You can configure the DSP blocks to
implement one of several operational modes to suit your application. The built-in
shift register chain, multipliers, and adders/subtractors minimize the amount of
external logic to implement these functions, resulting in efficient resource usage and
improved performance and data throughput for DSP applications.
Many complex systems, such as WiMAX, 3GPP WCDMA, high-performance
computing (HPC), voice over Internet protocol (VoIP), H.264 video compression,
medical imaging, and HDTV use sophisticated digital signal processing techniques,
which typically require a large number of mathematical computations. Stratix IV
devices are ideally suited for these tasks because the DSP blocks consist of a
combination of dedicated elements that perform multiplication, addition, subtraction,
accumulation, summation, and dynamic shift operations.
Along with the high-performance Stratix IV soft logic fabric and TriMatrix memory
structures, you can configure DSP blocks to build sophisticated fixed-point and
floating-point arithmetic functions. These can be manipulated easily to implement
common, larger computationally intensive subsystems such as FIR filters, complex
FIR filters, IIR filters, FFT functions, and discrete cosine transform (DCT) functions.
This chapter contains the following sections:
■ “Stratix IV DSP Block Overview” on page 4–2
■ “Stratix IV Simplified DSP Operation” on page 4–4
■ “Stratix IV Operational Modes Overview” on page 4–8
■ “Stratix IV DSP Block Resource Descriptions” on page 4–9
■ “Stratix IV Operational Mode Descriptions” on page 4–15
■ “Software Support” on page 4–35
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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
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Stratix IV Device Handbook
Volume 1
February 2011
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