參數(shù)資料
    型號(hào): BU-62864G3-390Z
    廠(chǎng)商: DATA DEVICE CORP
    元件分類(lèi): 微控制器/微處理器
    英文描述: 2 CHANNEL(S), 1M bps, MIL-STD-1553 CONTROLLER, CQFP72
    封裝: 1 INCH, CERAMIC, QFP-72
    文件頁(yè)數(shù): 68/99頁(yè)
    文件大?。?/td> 578K
    代理商: BU-62864G3-390Z
    Data Device Corporation
    62743_pre7_noSA-DB.DOC
    www.ddc-web.com
    8-07-02
    70
    Table 61. Typical Selective Message Monitor Memory Map
    (shown for 4K RAM for "Monitor only" mode)
    ADDRESS (HEX)
    DESCRIPTION
    0100-0101
    Not Used
    0102
    Monitor Command Stack Pointer A (fixed location)
    0103
    Monitor Data Stack Pointer A (fixed location)
    0104-0105
    Not Used
    0106
    Monitor Command Stack Pointer B (fixed location)
    0107
    Monitor Data Stack Pointer B (fixed location)
    0108-027F
    Not Used
    0280-02FF
    Selective Monitor Lookup Table
    0300-03FF
    Not Used
    0400-07FF
    Monitor Command Stack A
    0800-0FFF
    Monitor Data Stack A
    Figure 10 illustrates the Selective Message Monitor operation. Upon receipt of a
    valid Command Word, the PCI Enhanced Mini-ACE will reference the Selective
    Monitor Lookup Table to determine if the current command is enabled. If the
    current command is disabled, the PCI Enhanced Mini-ACE monitor will ignore (and
    not store) the current message. If the command is enabled, the monitor will create
    an entry in the Monitor Command Stack at the address location referenced by the
    Monitor Command Stack Pointer, and an entry in the monitor data stack starting at
    the location referenced by the monitor data stack pointer.
    The format of the information in the data stack depends on the format of the
    message that was processed. For example, for a BC-to-RT transfer (receive
    command), the monitor will store the command word in the monitor command
    descriptor stack, with the data words and the receiving RT's status word stored in
    the monitor data stack.
    The size of the monitor command stack is programmable, with choices of 256, 1K,
    4K, or 16K words. The monitor data stack size is programmable with choices of
    512, 1K, 2K, 4K, 8K, 16K, 32K or 64K words.
    Monitor Interrupts. Selective monitor interrupts may be issued for End-of-
    message and for conditions relating to the monitor command stack pointer and
    monitor data stack pointer. The latter, which are shown in Figure 8, include
    Command Stack 50% Rollover, Command Stack 100% Rollover, Data Stack 50%
    Rollover, and Data Stack 100% Rollover.
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