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    參數(shù)資料
    型號(hào): MPC8347EVVALFB
    廠商: FREESCALE SEMICONDUCTOR INC
    元件分類(lèi): 微控制器/微處理器
    英文描述: 32-BIT, 667 MHz, MICROPROCESSOR, PBGA672
    封裝: 35 X 35 MM, 1.46 MM HEIGHT, 1 MM PITCH, LEAD FREE, TBGA-672
    文件頁(yè)數(shù): 18/98頁(yè)
    文件大小: 1084K
    代理商: MPC8347EVVALFB
    MPC8347EA PowerQUICC II Pro Integrated Host Processor Hardware Specifications, Rev. 11
    Freescale Semiconductor
    25
    Ethernet: Three-Speed Ethernet, MII Management
    8.2.1.2
    GMII Receive AC Timing Specifications
    Table 26 provides the GMII receive AC timing specifications.
    Figure 9 shows the GMII receive AC timing diagram.
    G
    Figure 9. GMII Receive AC Timing Diagram
    Table 26. GMII Receive AC Timing Specifications
    At recommended operating conditions with LVDD/OVDD of 3.3 V ± 10%.
    Parameter/Condition
    Symbol1
    Min
    Typ
    Max
    Unit
    RX_CLK clock period
    tGRX
    —8.0
    ns
    RX_CLK duty cycle
    tGRXH/tGRX
    40
    60
    %
    RXD[7:0], RX_DV, RX_ER setup time to RX_CLK
    tGRDVKH
    2.0
    ns
    RXD[7:0], RX_DV, RX_ER hold time to RX_CLK
    tGRDXKH
    0.5
    ns
    RX_CLK clock rise (20%–80%)
    tGRXR
    ——
    1.0
    ns
    RX_CLK clock fall time (80%–20%)
    tGRXF
    ——
    1.0
    ns
    Note:
    1. The symbols for timing specifications 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, tGRDVKH symbolizes GMII receive timing
    (GR) with respect to the time data input signals (D) reaching the valid state (V) relative to the tRX clock reference (K) going
    to the high state (H) or setup time. Also, tGRDXKL symbolizes GMII receive timing (GR) with respect to the time data input
    signals (D) went invalid (X) relative to the tGRX clock reference (K) going to the low (L) state or hold time. In general, the clock
    reference symbol is based on three letters representing the clock of a particular function. For example, the subscript of tGRX
    represents the GMII (G) receive (RX) clock. For rise and fall times, the latter convention is used with the appropriate letter:
    R (rise) or F (fall).
    RX_CLK
    RXD[7:0]
    tGRDXKH
    tGRX
    tGRXH
    tGRXR
    tGRXF
    tGRDVKH
    RX_DV
    RX_ER
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