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  • 參數(shù)資料
    型號: ATT3030-70H68I
    廠商: Electronic Theatre Controls, Inc.
    元件分類: FPGA
    英文描述: Field-Programmable Gate Arrays
    中文描述: 現(xiàn)場可編程門陣列
    文件頁數(shù): 24/80頁
    文件大小: 528K
    代理商: ATT3030-70H68I
    Data Sheet
    February 1997
    ATT3000 Series Field-Programmable Gate Arrays
    24
    Lucent Technologies Inc.
    Configuration Modes
    (continued)
    Peripheral Mode
    Peripheral mode provides a simplified interface through which the device may be loaded byte-wide, as a processor
    peripheral. Figure 23 shows the peripheral mode connections. Processor write cycles are decoded from the com-
    mon assertion of the active-low write strobe (
    WS
    ), and two active-low and one active-high chip selects (
    CS0
    ,
    CS1
    ,
    CS2). If all of these signals are not available, the unused inputs should be driven to their respective active levels.
    The FPGA will accept 1 byte of configuration data on the D[7:0] inputs for each selected processor write cycle.
    Each byte of data is loaded into a buffer register. The FPGA generates a CCLK from the internal timing generator
    and serializes the parallel input data for internal framing or for succeeding slaves on data out (DOUT). An output
    HIGH on READY/
    BUSY
    pin indicates the completion of loading for each byte when the input register is ready for a
    new byte. As with master modes, peripheral mode may also be used as a lead device for a daisy-chain of slave
    devices.
    Figure 23. Peripheral Mode
    REPROGRAM
    +5 V
    ADDRESS
    BUS
    CONTROL
    SIGNALS
    ADDRESS
    DECODE
    LOGIC
    8
    GENERAL-
    PURPOSE
    USER I/O
    OTHER
    I/O PINS
    LDC
    HDC
    M2
    DOUT
    CCLK
    CS0
    D[7:0]
    CS1
    CS2
    WS
    RDY/BUSY
    INIT
    D/P
    RESET
    D[7:0]
    M0
    M1
    PWRDWN
    *
    *
    +5 V
    DATA
    BUS
    5 k
    OC
    5-3114(F)
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