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  • 參數(shù)資料
    型號: MPC8343ECVRADDB
    廠商: Freescale Semiconductor
    文件頁數(shù): 17/80頁
    文件大小: 0K
    描述: IC MPU PWRQUICC II 620-PBGA
    產(chǎn)品培訓(xùn)模塊: MPC834x PowerQUICC II Processors
    標(biāo)準(zhǔn)包裝: 36
    系列: MPC83xx
    處理器類型: 32-位 MPC83xx PowerQUICC II Pro
    速度: 266MHz
    電壓: 1.2V
    安裝類型: 表面貼裝
    封裝/外殼: 620-BBGA 裸露焊盤
    供應(yīng)商設(shè)備封裝: 620-PBGA(29x29)
    包裝: 托盤
    MPC8343EA PowerQUICC II Pro Integrated Host Processor Hardware Specifications, Rev. 11
    24
    Freescale Semiconductor
    Ethernet: Three-Speed Ethernet, MII Management
    8.2
    MII, RGMII, and RTBI AC Timing Specifications
    The AC timing specifications for MII, RGMII, and RTBI are presented in this section.
    8.2.1
    MII AC Timing Specifications
    This section describes the MII transmit and receive AC timing specifications.
    8.2.1.1
    MII Transmit AC Timing Specifications
    Table 25 provides the MII transmit AC timing specifications.
    Figure 9 shows the MII transmit AC timing diagram.
    Figure 9. MII Transmit AC Timing Diagram
    Table 25. MII Transmit AC Timing Specifications
    At recommended operating conditions with LVDD/OVDD of 3.3 V ± 10%.
    Parameter/Condition
    Symbol1
    Min
    Typ
    Max
    Unit
    TX_CLK clock period 10 Mbps
    tMTX
    —400
    ns
    TX_CLK clock period 100 Mbps
    tMTX
    —40—
    ns
    TX_CLK duty cycle
    tMTXH/tMTX
    35
    65
    %
    TX_CLK to MII data TXD[3:0], TX_ER, TX_EN delay
    tMTKHDX
    1
    5
    15
    ns
    TX_CLK data clock rise (20%–80%)
    tMTXR
    1.0
    4.0
    ns
    TX_CLK data clock fall (80%–20%)
    tMTXF
    1.0
    4.0
    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, tMTKHDX symbolizes MII transmit timing
    (MT) for the time tMTX clock reference (K) going high (H) until data outputs (D) are invalid (X). In general, the clock reference
    symbol is based on two to three letters representing the clock of a particular function. For example, the subscript of tMTX
    represents the MII(M) transmit (TX) clock. For rise and fall times, the latter convention is used with the appropriate letter:
    R (rise) or F (fall).
    TX_CLK
    TXD[3:0]
    tMTKHDX
    tMTX
    tMTXH
    tMTXR
    tMTXF
    TX_EN
    TX_ER
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