參數(shù)資料
    型號: BU-61559F1-170Q
    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, CDFP78
    封裝: 45.70 X 53.30 MM, 5.30 MM HEIGHT, CERAMIC, FP-78
    文件頁數(shù): 19/32頁
    文件大?。?/td> 438K
    代理商: BU-61559F1-170Q
    26
    Data Device Corporation
    www.ddc-web.com
    BU-61559 Series
    E-03/06-0
    Used to select between the transpar-
    ent (when strapped to logic 1) and
    buffered (when strapped to logic 0)
    modes for the host processor inter-
    face.
    TRANSPARENT/
    BUFFERED
    35
    50
    Strobe Data. Used in conjunction with
    SELECT to initiate and control the
    data transfer cycle between the host
    processor and the BU-61559.
    STRBD (I)
    34
    52
    Generally connected to a CPU
    address decoder output to select the
    BU-61559 for a transfer to/from either
    RAM or register. May be tied to
    STRBD.
    SELECT (I)
    74
    49
    Memory/Register. Generally connected
    to either a CPU address line or address
    decoder output. Selects between mem-
    ory access (MEM/REG = 1) or register
    access (MEM/REG = 0).
    MEM/REG (I)
    33
    54
    Read/Write. For a host processor
    access, selects between reading
    (RD/WR = 1) and writing (RD/WR = 0).
    RD/WR (I)
    36
    48
    Tri-state control for external address
    and data buffers. Generally not need-
    ed in the buffered mode. When low,
    external buffers should be enabled to
    allow the host processor access to the
    BUS-61669's RAM and registers.
    IOEN (O)
    73
    51
    Handshake output to host processor.
    For a read access, signals that data is
    available to be read on D15 through
    D0. For a write cycle, signals that data
    has been transferred to a register or
    RAM location.
    READYD (O)
    75
    47
    Interrupt request output. If the
    LEVEL/PULSE interrupt bit (bit 3) of
    Configuration Register #2 is low, a
    negative pulse of approximately 500
    ns in width is output on INT. If bit 3 is
    high, a low level interrupt request out-
    put will be asserted on INT.
    INT (O)
    72
    53
    SIGNAL NAME
    PIN NO.
    DESCRIPTION
    DIP
    FLAT
    PROCESSOR INTERFACE (8)
    Asserted low during both host proces-
    sor and 1553 protocol/memory man-
    agement memory transfer cycles. Used
    as a memory chip select (CS) signal for
    external RAM in the transparent mode.
    MEMENA-OUT
    (O)
    31
    58
    Chip Select (CS) input to 8K X 16 of
    internal shared RAM. If only internal
    RAM is used (always the case in the
    buffered mode), connect directly to
    MEMENA-OUT.
    MEMENA-IN (I)
    69
    59
    Memory Output Enable/Address Latch.
    In transparent mode, output used to
    enable data outputs for external RAM
    read cycles. In buffered mode, input
    used to configure the internal address
    buffers in latched mode (when low) or
    transparent mode (when high).
    MEMOE (O)/
    ADDR_LAT (I),
    30
    60
    Memory Write. Asserted low during
    memory write transfers to strobe data
    into internal or external RAM. Used in
    transparent mode.
    MEMWR (O)
    68
    61
    SIGNAL NAME
    PIN NO.
    DESCRIPTION
    DIP
    FLAT
    MEMORY INTERFACE AND ADDRESS
    LATCH CONTROL (4)
    Analog Transmit/Receive Input/Outputs.
    Connect directly to 1553 isolation trans-
    formers.
    TX/RX-A (I/O)
    40
    TX/RX-A (I/O)
    78
    41
    TX/RX-B (I/O)
    20
    39
    TX/RX-B (I/O)
    59
    38
    SIGNAL NAME
    PIN NO.
    DESCRIPTION
    DIP
    FLAT
    1553 ISOLATION TRANSFORMER INTERFACE (4)
    Remote Terminal Address Inputs
    Remote Terminal Address Parity. Must
    provide odd parity sum with RTAD4-
    RTAD0 in order for the RT to respond to
    non-broadcast commands.
    RTAD4 (MSB) (I)
    11
    21
    RTAD3 (I)
    49
    18
    RTAD2 (I)
    50
    20
    RTAD1 (I)
    9
    17
    RTAD0 (MSB) (I)
    10
    19
    RTAD (I)
    51
    22
    SIGNAL NAME
    PIN NO.
    DESCRIPTION
    DIP
    FLAT
    RT ADDRESS (6)
    TABLE 7. SIGNAL DESCRIPTIONS BY FUNCTIONAL GROUPS (CONT)
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