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  • 參數(shù)資料
    型號: LFECP40E-3F672I
    廠商: Lattice Semiconductor Corporation
    英文描述: LatticeECP/EC Family Data Sheet
    中文描述: LatticeECP / EC的系列數(shù)據(jù)手冊
    文件頁數(shù): 17/117頁
    文件大小: 557K
    代理商: LFECP40E-3F672I
    2-14
    Architecture
    Lattice Semiconductor
    LatticeECP/EC Family Data Sheet
    Figure 2-16. Memory Core Reset
    For further information on sysMEM EBR block, please see the details of additional technical documentation at the
    end of this data sheet.
    sysDSP Block
    The LatticeECP-DSP family provides a sysDSP block making it ideally suited for low cost, high performance Digital
    Signal Processing (DSP) applications. Typical functions used in these applications are Finite Impulse Response
    (FIR)
    fi
    lters; Fast Fourier Transforms (FFT) functions, correlators, Reed-Solomon/Turbo/Convolution encoders and
    decoders. These complex signal processing functions use similar building blocks such as multiply-adders and mul-
    tiply-accumulators.
    sysDSP Block Approach Compare to General DSP
    Conventional general-purpose DSP chips typically contain one to four (Multiply and Accumulate) MAC units with
    fi
    xed data-width multipliers; this leads to limited parallelism and limited throughput. Their throughput is increased by
    higher clock speeds. The LatticeECP, on the other hand, has many DSP blocks that support different data-widths.
    This allows the designer to use highly parallel implementations of DSP functions. The designer can optimize the
    DSP performance vs. area by choosing appropriate level of parallelism. Figure 2-17 compares the serial and the
    parallel implementations.
    Q
    SET
    D
    L
    CLR
    Output Data
    Latches
    Q
    D
    Memory Core
    Port A[17:0]
    SET
    Port B[17:0]
    RSTB
    GSRN
    Programmable Disable
    RSTA
    L
    CLR
    相關(guān)PDF資料
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    相關(guān)代理商/技術(shù)參數(shù)
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