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    參數(shù)資料
    型號: A54SX72A-2FGG256I
    廠商: Microsemi SoC
    文件頁數(shù): 65/108頁
    文件大?。?/td> 0K
    描述: IC FPGA SX-A 108K 256-FBGA
    標準包裝: 90
    系列: SX-A
    LAB/CLB數(shù): 6036
    輸入/輸出數(shù): 203
    門數(shù): 108000
    電源電壓: 2.25 V ~ 5.25 V
    安裝類型: 表面貼裝
    工作溫度: -40°C ~ 85°C
    封裝/外殼: 256-LBGA
    供應商設備封裝: 256-FPBGA(17x17)
    SX-A Family FPGAs
    1- 2
    v5.3
    Logic Module Design
    The SX-A family architecture is described as a “sea-of-
    modules” architecture because the entire floor of the
    device is covered with a grid of logic modules with
    virtually no chip area lost to interconnect elements or
    routing. The Actel SX-A family provides two types of
    logic
    modules:
    the
    register
    cell
    (R-cell)
    and
    the
    combinatorial cell (C-cell).
    The R-cell contains a flip-flop featuring asynchronous clear,
    asynchronous preset, and clock enable, using the S0 and S1
    lines control signals (Figure 1-2). The R-cell registers feature
    programmable clock polarity selectable on a register-by-
    register basis. This provides additional flexibility while
    allowing mapping of synthesized functions into the SX-A
    FPGA. The clock source for the R-cell can be chosen from
    either the hardwired clock, the routed clocks, or internal
    logic.
    The C-cell implements a range of combinatorial functions
    of up to five inputs (Figure 1-3). Inclusion of the DB input
    and its associated inverter function allows up to 4,000
    different combinatorial functions to be implemented in a
    single module. An example of the flexibility enabled by
    the inversion capability is the ability to integrate a 3-input
    exclusive-OR function into a single C-cell. This facilitates
    construction of 9-bit parity-tree functions with 1.9 ns
    propagation delays.
    Module Organization
    All C-cell and R-cell logic modules are arranged into
    horizontal banks called Clusters. There are two types of
    Clusters: Type 1 contains two C-cells and one R-cell, while
    Type 2 contains one C-cell and two R-cells.
    Clusters
    are
    grouped
    together
    into
    SuperClusters
    (Figure 1-4 on page 1-3). SuperCluster 1 is a two-wide
    grouping of Type 1 Clusters. SuperCluster 2 is a two-wide
    group containing one Type 1 Cluster and one Type 2
    Cluster. SX-A devices feature more SuperCluster 1
    modules than SuperCluster 2 modules because designers
    typically require significantly more combinatorial logic
    than flip-flops.
    Figure 1-2 R-Cell
    Figure 1-3 C-Cell
    DQ
    DirectConnect
    Input
    CLKA,
    CLKB,
    Internal Logic
    HCLK
    CKS
    CKP
    CLR
    PRE
    Y
    Routed
    Data Input
    S0
    S1
    D0
    D1
    D2
    D3
    DB
    A0 B0
    A1 B1
    Sa
    Sb
    Y
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