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    參數(shù)資料
    型號: XCS30-3CS208I
    廠商: Xilinx, Inc.
    英文描述: Spartan and Spartan-XL Families Field Programmable Gate Arrays
    中文描述: 斯巴達和Spartan - xL的家庭現(xiàn)場可編程門陣列
    文件頁數(shù): 37/82頁
    文件大?。?/td> 623K
    代理商: XCS30-3CS208I
    Spartan and Spartan-XL Families Field Programmable Gate Arrays
    DS060 (v1.6) September 19, 2001
    Product Specification
    www.xilinx.com
    1-800-255-7778
    37
    R
    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
    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
    F
    F
    F
    DS060_39_082801
    C1, C2 or C3
    相關PDF資料
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    XCS30-4CS100I Spartan and Spartan-XL Families Field Programmable Gate Arrays
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