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  1. 參數(shù)資料
    型號(hào): MC8641DVU1000KB
    廠商: FREESCALE SEMICONDUCTOR INC
    元件分類: 微控制器/微處理器
    英文描述: MICROPROCESSOR, CBGA1023
    封裝: 33 X 33 MM, ROHS COMPLIANT, CERAMIC, BGA-1023
    文件頁數(shù): 71/140頁
    文件大?。?/td> 1484K
    代理商: MC8641DVU1000KB
    MPC8641 and MPC8641D Integrated Host Processor Hardware Specifications, Rev. 0
    36
    Freescale Semiconductor
    Ethernet: Enhanced Three-Speed Ethernet (eTSEC), MII Management
    Figure 15 shows the MII receive AC timing diagram.
    Figure 15. MII Receive AC Timing Diagram
    8.2.4
    TBI AC Timing Specifications
    This section describes the TBI transmit and receive AC timing specifications.
    8.2.4.1
    TBI Transmit AC Timing Specifications
    Table 32 provides the TBI transmit AC timing specifications.
    Table 32. TBI Transmit AC Timing Specifications
    At recommended operating conditions with L/TVDD of 3.3 V ± 5% and 2.5 V ± 5%.
    Parameter/Condition
    Symbol 1
    Min
    Typ
    Max
    Unit
    TCG[9:0] setup time GTX_CLK going high
    tTTKHDV
    2.0
    ns
    TCG[9:0] hold time from GTX_CLK going high
    tTTKHDX
    1.0
    ns
    GTX_CLK rise time (20%–80%)
    tTTXR
    2
    ——
    1.0
    ns
    GTX_CLK fall time (80%–20%)
    tTTXF
    2
    ——
    1.0
    ns
    Notes:
    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,
    tTTKHDV symbolizes the TBI transmit timing (TT) with respect to the time from tTTX (K) going high (H) until the
    referenced data signals (D) reach the valid state (V) or setup time. Also, tTTKHDX symbolizes the TBI transmit timing
    (TT) with respect to the time from tTTX (K) going high (H) until the referenced data signals (D) reach the invalid state
    (X) or hold time. 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 tTTX represents the TBI (T) transmit
    (TX) clock. For rise and fall times, the latter convention is used with the appropriate letter: R (rise) or F (fall).
    2. Guaranteed by design.
    RX_CLK
    RXD[3:0]
    tMRDXKL
    tMRX
    tMRXH
    tMRXR
    tMRXF
    RX_DV
    RX_ER
    tMRDVKH
    Valid Data
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