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    參數(shù)資料
    型號(hào): MPC8555PXAPDX
    廠(chǎng)商: FREESCALE SEMICONDUCTOR INC
    元件分類(lèi): 微控制器/微處理器
    英文描述: 32-BIT, 833 MHz, RISC PROCESSOR, PBGA783
    封裝: 29 X 29 MM, 3.75 MM HEIGHT, 1 MM PITCH, FLIP CHIP, PLASTIC, BGA-783
    文件頁(yè)數(shù): 22/88頁(yè)
    文件大小: 1244K
    代理商: MPC8555PXAPDX
    MPC8555E PowerQUICC III Integrated Communications Processor Hardware Specifications, Rev. 4
    Freescale Semiconductor
    29
    Ethernet: Three-Speed, MII Management
    8.2.4.2
    TBI Receive AC Timing Specifications
    Table 25 provides the TBI receive AC timing specifications.
    Figure 12 shows the TBI receive AC timing diagram.
    Figure 12. TBI Receive AC Timing Diagram
    Table 25. TBI Receive AC Timing Specifications
    At recommended operating conditions with LVDD of 3.3 V ± 5%.
    Parameter/Condition
    Symbol 1
    Min
    Typ
    Max
    Unit
    RX_CLK clock period
    tTRX
    16.0
    ns
    RX_CLK skew
    tSKTRX
    7.5
    8.5
    ns
    RX_CLK duty cycle
    tTRXH/tTRX
    40
    60
    %
    RCG[9:0] setup time to rising RX_CLK
    tTRDVKH
    2.5
    ns
    RCG[9:0] hold time to rising RX_CLK
    tTRDXKH
    1.5
    ns
    RX_CLK clock rise time and fall time
    tTRXR, tTRXF
    2,3
    0.7
    2.4
    ns
    Note:
    1. The symbols used for timing specifications herein follow the pattern of t(first two letters of functional block)(signal)(state)
    (reference)(state) for inputs and t(first two letters of functional block)(reference)(state)(signal)(state) for outputs. For example, tTRDVKH
    symbolizes TBI receive timing (TR) with respect to the time data input signals (D) reach the valid state (V) relative to the
    tTRX clock reference (K) going to the high (H) state or setup time. Also, tTRDXKH symbolizes TBI receive timing (TR) with
    respect to the time data input signals (D) went invalid (X) relative to the tTRX clock reference (K) going to the high (H) state.
    Note that, in general, the clock reference symbol representation is based on three letters representing the clock of a
    particular functional. For example, the subscript of tTRX represents the TBI (T) receive (RX) clock. For rise and fall times,
    the latter convention is used with the appropriate letter: R (rise) or F (fall). For symbols representing skews, the subscript is
    skew (SK) followed by the clock that is being skewed (TRX).
    2. Guaranteed by design.
    RX_CLK1
    RXD[9:0]
    tTRX
    tTRXH
    tTRXR
    tTRXF
    tTRDVKH
    RX_CLK0
    tTRDXKH
    tTRDVKH
    tTRDXKH
    tSKTRX
    tTRXH
    Valid Data
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