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EP1S30B1508I5ES 数据表(PDF) 76 Page - Altera Corporation |
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EP1S30B1508I5ES 数据表(HTML) 76 Page - Altera Corporation |
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76 / 290 page  2–52 Altera Corporation Stratix Device Handbook, Volume 1 July 2005 Digital Signal Processing Block Digital Signal Processing Block 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 blocks have the same fundamental building block: the multiplier. Additionally, some applications need specialized operations such as multiply-add and multiply-accumulate operations. Stratix devices provide DSP blocks to meet the arithmetic requirements of these functions. Each Stratix device has two columns of DSP blocks to efficiently implement DSP functions faster than LE-based implementations. Larger Stratix devices have more DSP blocks per column (see Table 2–13). Each DSP block can be configured to support up to: ■ Eight 9 × 9-bit multipliers ■ Four 18 × 18-bit multipliers ■ One 36 × 36-bit multiplier As indicated, the Stratix DSP block can support one 36 × 36-bit multiplier in a single DSP block. This is true for any matched sign multiplications (either unsigned by unsigned or signed by signed), but the capabilities for dynamic and mixed sign multiplications are handled differently. The following list provides the largest functions that can fit into a single DSP block. ■ 36 × 36-bit unsigned by unsigned multiplication ■ 36 × 36-bit signed by signed multiplication ■ 35 × 36-bit unsigned by signed multiplication ■ 36 × 35-bit signed by unsigned multiplication ■ 36 × 35-bit signed by dynamic sign multiplication ■ 35 × 36-bit dynamic sign by signed multiplication ■ 35 × 36-bit unsigned by dynamic sign multiplication ■ 36 × 35-bit dynamic sign by unsigned multiplication ■ 35 × 35-bit dynamic sign multiplication when the sign controls for each operand are different ■ 36 × 36-bit dynamic sign multiplication when the same sign control is used for both operands 1 This list only shows functions that can fit into a single DSP block. Multiple DSP blocks can support larger multiplication functions. Figure 2–29 shows one of the columns with surrounding LAB rows. |
类似零件编号 - EP1S30B1508I5ES |
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类似说明 - EP1S30B1508I5ES |
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