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  • 參數(shù)資料
    型號(hào): XC3S1200E-4FG320I
    廠商: Xilinx Inc
    文件頁(yè)數(shù): 124/227頁(yè)
    文件大小: 0K
    描述: IC FPGA SPARTAN 3E 320FBGA
    標(biāo)準(zhǔn)包裝: 84
    系列: Spartan®-3E
    LAB/CLB數(shù): 2168
    邏輯元件/單元數(shù): 19512
    RAM 位總計(jì): 516096
    輸入/輸出數(shù): 250
    門(mén)數(shù): 1200000
    電源電壓: 1.14 V ~ 1.26 V
    安裝類型: 表面貼裝
    工作溫度: -40°C ~ 100°C
    封裝/外殼: 320-BGA
    供應(yīng)商設(shè)備封裝: 320-FBGA(19x19)
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    Spartan-3E FPGA Family: Functional Description
    DS312 (v4.1) July 19, 2013
    Product Specification
    21
    Configurable Logic Block (CLB) and
    Slice Resources
    For additional information, refer to the “Using Configurable
    Logic Blocks (CLBs)” chapter in UG331.
    CLB Overview
    The Configurable Logic Blocks (CLBs) constitute the main
    logic resource for implementing synchronous as well as
    combinatorial circuits. Each CLB contains four slices, and
    each slice contains two Look-Up Tables (LUTs) to
    implement logic and two dedicated storage elements that
    can be used as flip-flops or latches. The LUTs can be used
    as a 16x1 memory (RAM16) or as a 16-bit shift register
    (SRL16), and additional multiplexers and carry logic simplify
    wide logic and arithmetic functions. Most general-purpose
    logic in a design is automatically mapped to the slice
    resources in the CLBs. Each CLB is identical, and the
    Spartan-3E family CLB structure is identical to that for the
    Spartan-3 family.
    CLB Array
    The CLBs are arranged in a regular array of rows and
    columns as shown in Figure 14.
    Each density varies by the number of rows and columns of
    CLBs (see Table 9).
    Slices
    Each CLB comprises four interconnected slices, as shown
    in Figure 16. These slices are grouped in pairs. Each pair is
    organized as a column with an independent carry chain.
    The left pair supports both logic and memory functions and
    its slices are called SLICEM. The right pair supports logic
    only and its slices are called SLICEL. Therefore half the
    LUTs support both logic and memory (including both
    RAM16 and SRL16 shift registers) while half support logic
    only, and the two types alternate throughout the array
    columns. The SLICEL reduces the size of the CLB and
    lowers the cost of the device, and can also provide a
    performance advantage over the SLICEM.
    X-Ref Target - Figure 14
    Figure 14: CLB Locations
    DS312-2_31_021205
    Spartan-3E
    FPGA
    X0Y1
    X1Y1
    X0Y0
    X1Y0
    IOBs
    CLB
    Slice
    X2Y1
    X3Y1
    X2Y0
    X3Y0
    X0Y3
    X1Y3
    X0Y2
    X1Y2
    X2Y3
    X3Y3
    X2Y2
    X3Y2
    Table 9: Spartan-3E CLB Resources
    Device
    CLB
    Rows
    CLB
    Columns
    CLB
    Total(1)
    Slices
    LUTs /
    Flip-Flops
    Equivalent
    Logic Cells
    RAM16 /
    SRL16
    Distributed
    RAM Bits
    XC3S100E
    22
    16
    240
    960
    1,920
    2,160
    960
    15,360
    XC3S250E
    34
    26
    612
    2,448
    4,896
    5,508
    2,448
    39,168
    XC3S500E
    46
    34
    1,164
    4,656
    9,312
    10,476
    4,656
    74,496
    XC3S1200E
    60
    46
    2,168
    8,672
    17,344
    19,512
    8,672
    138,752
    XC3S1600E
    76
    58
    3,688
    14,752
    29,504
    33,192
    14,752
    236,032
    Notes:
    1.
    The number of CLBs is less than the multiple of the rows and columns because the block RAM/multiplier blocks and the DCMs are
    embedded in the array (see Figure 1 in Module 1).
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