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    參數(shù)資料
    型號: MPC850SAR
    廠商: Motorola, Inc.
    英文描述: Communications Controller Hardware Specifications
    中文描述: 通信控制器的硬件規(guī)格
    文件頁數(shù): 13/68頁
    文件大小: 384K
    代理商: MPC850SAR
    MOTOROLA
    MPC850 (Rev. A/B/C) Hardware Specifications
    13
    Layout Practices
    B22c
    CLKOUT falling edge to CS
    asserted GPCM ACS = 11, TRLX
    = 0, EBDF = 1
    7.00
    14.00
    11.00
    18.00
    9.00
    16.00
    0.375
    50.00
    ns
    B23
    CLKOUT rising edge to CS
    negated GPCM read access,
    GPCM write access ACS = 00,
    TRLX = 0 & CSNT = 0
    2.00
    8.00
    2.00
    8.00
    2.00
    8.00
    50.00
    ns
    B24
    A[6–31] to CS asserted GPCM
    ACS = 10, TRLX = 0.
    3.00
    6.00
    4.00
    0.250
    50.00
    ns
    B24a
    A[6–31] to CS asserted GPCM
    ACS = 11, TRLX = 0
    8.00
    13.00
    11.00
    0.500
    50.00
    ns
    B25
    CLKOUT rising edge to OE,
    WE[0–3] asserted
    9.00
    9.00
    9.00
    50.00
    ns
    B26
    CLKOUT rising edge to OE
    negated
    2.00
    9.00
    2.00
    9.00
    2.00
    9.00
    50.00
    ns
    B27
    A[6–31] to CS asserted GPCM
    ACS = 10, TRLX = 1
    23.00
    36.00
    29.00
    1.250
    50.00
    ns
    B27a
    A[6–31] to CS asserted GPCM
    ACS = 11, TRLX = 1
    28.00
    43.00
    36.00
    1.500
    50.00
    ns
    B28
    CLKOUT rising edge to WE[0–3]
    negated GPCM write access
    CSNT = 0
    9.00
    9.00
    9.00
    50.00
    ns
    B28a
    CLKOUT falling edge to WE[0–3]
    negated GPCM write access
    TRLX = 0,1 CSNT = 1, EBDF = 0
    5.00
    12.00
    8.00
    14.00
    6.00
    13.00
    0.250
    50.00
    ns
    B28b
    CLKOUT falling edge to CS
    negated GPCM write access
    TRLX = 0,1 CSNT = 1, ACS = 10
    or ACS = 11, EBDF = 0
    12.00
    14.00
    13.00
    0.250
    50.00
    ns
    B28c
    CLKOUT falling edge to WE[0–3]
    negated GPCM write access
    TRLX = 0,1 CSNT = 1 write
    access TRLX = 0, CSNT = 1,
    EBDF = 1
    7.00
    14.00
    11.00
    18.00
    9.00
    16.00
    0.375
    50.00
    ns
    B28d
    CLKOUT falling edge to CS
    negated GPCM write access
    TRLX = 0,1 CSNT = 1, ACS = 10
    or ACS = 11, EBDF = 1
    14.00
    18.00
    16.00
    0.375
    50.00
    ns
    B29
    WE[0–3] negated to D[0–31],
    DP[0–3] high-Z GPCM write
    access, CSNT = 0
    3.00
    6.00
    4.00
    0.250
    50.00
    ns
    B29a
    WE[0–3] negated to D[0–31],
    DP[0–3] high-Z GPCM write
    access, TRLX = 0 CSNT = 1,
    EBDF = 0
    8.00
    13.00
    11.00
    0.500
    50.00
    ns
    Table 6. Bus Operation Timing
    1
    (continued)
    Num
    Characteristic
    50 MHz
    66 MHz
    80 MHz
    FFACT
    Cap Load
    (default
    50 pF)
    Unit
    Min
    Max
    Min
    Max
    Min
    Max
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