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    參數(shù)資料
    型號(hào): XCS20XL-4PQ208C
    廠商: Xilinx Inc
    文件頁(yè)數(shù): 31/83頁(yè)
    文件大?。?/td> 0K
    描述: IC FPGA 3.3V C-TEMP HP 208-PQFP
    產(chǎn)品變化通告: Product Discontinuation 26/Oct/2011
    標(biāo)準(zhǔn)包裝: 24
    系列: Spartan®-XL
    LAB/CLB數(shù): 400
    邏輯元件/單元數(shù): 950
    RAM 位總計(jì): 12800
    輸入/輸出數(shù): 160
    門數(shù): 20000
    電源電壓: 3 V ~ 3.6 V
    安裝類型: 表面貼裝
    工作溫度: 0°C ~ 85°C
    封裝/外殼: 208-BFQFP
    供應(yīng)商設(shè)備封裝: 208-PQFP(28x28)
    Spartan and Spartan-XL FPGA Families Data Sheet
    DS060 (v2.0) March 1, 2013
    37
    Product Specification
    R
    Product Obsolete/Under Obsolescence
    Configuration Through the Boundary Scan
    Pins
    Spartan/XL devices can be configured through the bound-
    ary scan pins. The basic procedure is as follows:
    Power up the FPGA with INIT held Low (or drive the
    PROGRAM pin Low for more than 300 ns followed by a
    High while holding INIT Low). Holding INIT Low allows
    enough time to issue the CONFIG command to the
    FPGA. The pin can be used as I/O after configuration if
    a resistor is used to hold INIT Low.
    Issue the CONFIG command to the TMS input.
    Wait for INIT to go High.
    Sequence the boundary scan Test Access Port to the
    SHIFT-DR state.
    Toggle TCK to clock data into TDI pin.
    The user must account for all TCK clock cycles after INIT
    goes High, as all of these cycles affect the Length Count
    compare.
    For more detailed information, refer to the Xilinx application
    note, "Boundary Scan in FPGA Devices." This application
    note applies to Spartan and Spartan-XL devices.
    Figure 31: Start-up Timing
    UCLK_SYNC
    UCLK_NOSYNC
    CCLK_SYNC
    CCLK_NOSYNC
    CCLK
    GSR Active
    UCLK Period
    DONE IN
    Di
    Di+1
    Di+2
    Di
    Di+1
    Di+2
    U2
    U3
    U4
    U2
    U3
    U4
    U2
    U3
    U4
    C1
    Synchronization
    Uncertainty
    Di
    Di+1
    Di
    Di+1
    DONE
    I/O
    GSR Active
    DONE
    I/O
    GSR Active
    DONE
    C1
    C2
    C1
    U2
    C3
    C4
    C2
    C3
    C4
    C2
    C3
    C4
    I/O
    GSR Active
    DONE
    I/O
    F = Finished, no more
    configuration clocks needed
    Daisy-chain lead device
    must have latest F
    Heavy lines describe
    default timing
    CCLK Period
    Length Count Match
    F
    DS060_39_082801
    C1, C2 or C3
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    XCS20XL4PQ208I 制造商:XILINX 功能描述:*
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