• 參數(shù)資料
    型號(hào): BU-61745F3-172L
    廠商: DATA DEVICE CORP
    元件分類: 微控制器/微處理器
    英文描述: 2 CHANNEL(S), 1M bps, MIL-STD-1553 CONTROLLER, CQFP72
    封裝: 25.40 X 25.40 MM, 3.94 MM HEIGHT, CERAMIC, FP-72
    文件頁(yè)數(shù): 15/60頁(yè)
    文件大?。?/td> 457K
    代理商: BU-61745F3-172L
    22
    Data Device Corporation
    www.ddc-web.com
    BU-6174X/6184X/6186X
    F-10/02-300
    General Purpose Queue. The Enhanced Mini-ACE/-ACE BC
    allows for the creation of a general purpose queue. This data
    structure provides a means for the message sequence proces-
    sor to convey information to the BC host. The BC op code reper-
    toire provides mechanisms to push various items on this queue.
    These include the contents of the Time Tag Register, the Block
    Status Word for the most recent message, an immediate data
    value, or the contents of a specified memory address.
    FIGURE 5 illustrates the operation of the BC General Purpose
    Queue. Note that the BC General Purpose Queue Pointer
    Register will always point to the next address location (modulo
    64); that is, the location following the last location written by the
    BC message sequence control engine.
    If enabled, a BC GENERAL PURPOSE QUEUE ROLLOVER
    interrupt will be issued when the value of the queue pointer
    address rolls over at a 64-word boundary. The rollover will always
    occur at a modulo 64 address.
    LAST LOCATION
    BC GENERAL
    PURPOSE QUEUE
    (64 Locations)
    BC GENERAL
    PURPOSE QUEUE
    POINTER
    REGISTER
    NEXT LOCATION
    FIGURE 5. BC GENERAL PURPOSE QUEUE
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