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    參數(shù)資料
    型號: M5-384/160-7HC
    廠商: LATTICE SEMICONDUCTOR CORP
    元件分類: PLD
    英文描述: Fifth Generation MACH Architecture
    中文描述: EE PLD, 7.5 ns, PQFP208
    封裝: HEAT SINK, PLASTIC, QFP-208
    文件頁數(shù): 43/47頁
    文件大?。?/td> 1145K
    代理商: M5-384/160-7HC
    MACH 5 Family
    5
    Product-Term Array and Logic Allocator
    The product-term array uses the same sum-of-products architecture as PAL devices and consists of
    32 inputs (plus their complements) and 64 product terms arranged in 16
    clusters. A cluster is a sum-
    of-products function with either 3 of 4 product terms.
    Logic allocators assign the clusters to macrocells. Each macrocell can accept up to eight clusters of
    three or four product terms, but a given cluster can only be steered to one macrocell (Table 4). If
    only three product terms in a cluster are steered, the fourth can be used as an input to an XOR
    gate for separate logic generation and/or polarity control.
    The
    wide logic allocator is comprised of all 16 of the individual logic allocators and acts as an output
    switch matrix by reassigning logic to macrocells to retain pinout as designs change. The logic
    allocation scheme in the MACH 5 device allows for the implementation of large equations (up to
    32 product terms) with only one pass through the logic array.
    Table 4. Product Term Steering Options for PT Clusters and Macrocells
    Macrocell
    Available Clusters
    Macrocell
    Available Clusters
    M0
    C0, C1, C2, C3, C4
    M8
    C5, C6, C7, C8, C9, C10, C11, C12
    M1
    C0, C1, C2, C3, C4, C5
    M9
    C6, C7, C8, C9, C10, C11, C12, C13
    M2
    C0, C1, C2, C3, C4, C5, C6
    M10
    C7, C8, C9, C10, C11, C12, C13, C14
    M3
    C0, C1, C2, C3, C4, C5, C6, C7
    M11
    C8, C9, C10, C11, C12, C13, C14, C15
    M4
    C0, C1, C2, C3, C4, C5, C6, C7
    M12
    C8, C9, C10, C11, C12, C13, C14, C15
    M5
    C1, C2, C3, C4, C5, C6, C7, C8
    M13
    C9, C10, C11, C12, C13, C14, C15
    M6
    C2, C3, C4, C5, C6, C7, C8, C9
    M14
    C10, C11, C12, C13, C14, C15
    M7
    C3, C4, C5, C6, C7, C8, C9, C10
    M15
    C11, C12, C13, C14, C15
    Block
    Interconnect
    Interconnect Feeder
    Block
    Feeder
    32
    I/Os
    16
    2
    Macrocells
    Logic
    Alocator
    Control Generator
    OE Generator
    Product-term
    Array
    32
    Input Register
    Path
    2
    Local
    Feedback
    20446G-002
    Figure 2. PAL Block Structure
    相關PDF資料
    PDF描述
    M5-384/160-7HI Fifth Generation MACH Architecture
    M5-384/192-10AC Fifth Generation MACH Architecture
    M5-384/192-20AI Fifth Generation MACH Architecture
    M5-384/192-6AC Fifth Generation MACH Architecture
    M5-512/120-10HC Fifth Generation MACH Architecture
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