ep2sgx30c Altera Corporation, ep2sgx30c Datasheet - Page 89

• Manufacturer Part Number: ep2sgx30c
• Description: Stratix Ii Gx Device Data Sheet
• Manufacturer: Altera Corporation

Digital Signal
Processing
(DSP) Block
Altera Corporation
October 2007
The most commonly used DSP functions are finite impulse response (FIR)
filters, complex FIR filters, infinite impulse response (IIR) filters, fast
Fourier transform (FFT) functions, direct cosine transform (DCT)
functions, and correlators. All of these use the multiplier as the
fundamental building block. Additionally, some applications need
specialized operations such as multiply-add and multiply-accumulate
operations. Stratix II GX devices provide DSP blocks to meet the
arithmetic requirements of these functions.
Each Stratix II GX device has two to four columns of DSP blocks to
efficiently implement DSP functions faster than ALM-based
implementations. Stratix II GX devices have up to 24 DSP blocks per
column (see
to:
■
■
■
As indicated, the Stratix II GX DSP block can support one 36 × 36-bit
multiplier in a single DSP block, and is true for any combination of
signed, unsigned, or mixed sign multiplications.
Eight 9 × 9-bit multipliers
Four 18 × 18-bit multipliers
One 36 × 36-bit multiplier
Table
2–21). Each DSP block can be configured to support up
Stratix II GX Device Handbook, Volume 1
Stratix II GX Architecture
2–81