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    參數(shù)資料
    型號: MC68EC030CFE25C
    廠商: FREESCALE SEMICONDUCTOR INC
    元件分類: 微控制器/微處理器
    英文描述: 32-BIT, 25 MHz, MICROPROCESSOR, CQFP132
    封裝: LEAD FREE, CERAMIC, QFP-132
    文件頁數(shù): 9/44頁
    文件大小: 499K
    代理商: MC68EC030CFE25C
    MOTOROLA
    MC68EC030 TECHNICAL DATA
    1 7
    ACCESS CONTROL
    Two access control registers are provided on the MC68EC030 to control cachability of accesses for two
    independent blocks of memory. Each block can range in size from 16 Mbytes to 2 Gbytes, and is
    specified in the corresponding ACx register with a base address, a base mask, function code, function
    code mask, and read/write mask. A typical use for an access control register is to designate a block of
    memory containing I/O devices as non-cachable.
    COPROCESSOR INTERFACE
    The coprocessor interface is a mechanism for extending the instruction set of the M68000 Family. The
    interface provided on the MC68EC030 is the same as that on the MC68020 and MC68030. Examples of
    these extensions are the addition of specialized data operands for the existing data types or, for the case
    of
    floating
    point,
    the
    inclusion
    of
    new
    data
    types
    and
    operations
    implemented
    by
    the
    MC68881/MC68882 floating-point coprocessors.
    SIGNAL DESCRIPTION
    Figure 8 illustrates the functional signal groups, and Table 3 describe the signals and their function.
    DSACK0
    FUNCTION
    CODES
    ADDRESS
    BUS
    TRANSFER
    SIZE
    ASYNCHRONOUS
    BUS CONTROL
    CACHE
    CONTROL
    EMULATOR
    SUPPORT
    SYNCHRONOUS
    BUS CONTROL
    BUS EXCEPTION
    CONTROL
    BUS ARBITRATION
    CONTROL
    INTERRUPT
    CONTROL
    MC68EC030
    FC0–FC2
    A0–A31
    D0–D31
    SIZ0
    SIZ1
    OCS
    ECS
    R/W
    RMC
    AS
    DS
    DBEN
    DSACK1
    CIIN
    CIOUT
    CBREQ
    CBACK
    GND (14)
    CLK
    CDIS
    STATUS
    REFILL
    STERM
    BERR
    HALT
    RESET
    IPL0
    IPL1
    IPL2
    IPEND
    AVEC
    BR
    BG
    BGACK
    V
    (10)
    CC
    DATA
    BUS
    Figure 8. Functional Signal Groups
    F
    re
    e
    sc
    a
    le
    S
    e
    m
    ic
    o
    n
    d
    u
    c
    to
    r,
    I
    Freescale Semiconductor, Inc.
    For More Information On This Product,
    Go to: www.freescale.com
    n
    c
    ..
    .
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