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  • 參數(shù)資料
    型號(hào): KMPC8315CVRAGDA
    廠商: Freescale Semiconductor
    文件頁數(shù): 28/106頁
    文件大?。?/td> 0K
    描述: IC MPU POWERQUICC II 620-PBGA
    標(biāo)準(zhǔn)包裝: 2
    系列: MPC83xx
    處理器類型: 32-位 MPC83xx PowerQUICC II Pro
    速度: 400MHz
    電壓: 1V
    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
    MPC8315E PowerQUICC II Pro Processor Hardware Specifications, Rev. 2
    28
    Freescale Semiconductor
    Ethernet: Three-Speed Ethernet, MII Management
    9.2.2
    RMII AC Timing Specifications
    This section describes the RMII transmit and receive AC timing specifications.
    9.2.2.1
    RMII Transmit AC Timing Specifications
    This section describes the RMII transmit and receive AC timing specifications. This table provides the
    RMII transmit AC timing specifications.
    This figure shows the RMII transmit AC timing diagram.
    Figure 13. RMII Transmit AC Timing Diagram
    9.2.2.2
    RMII Receive AC Timing Specifications
    This table provides the RMII receive AC timing specifications.
    Table 27. RMII Transmit AC Timing Specifications
    At recommended operating conditions with LVDD of 3.3 V ± 300 mv
    Parameter/Condition
    Symbol 1
    Min
    Typ
    Max
    Unit
    REF_CLK clock
    tRMX
    —20—
    ns
    REF_CLK duty cycle
    tRMXH/tRMX
    35
    65
    %
    REF_CLK to RMII data TXD[1:0], TX_EN delay
    tRMTKHDX
    2
    10
    ns
    REF_CLK data clock rise VIL(min) to VIH(max)
    tRMXR
    1.0
    4.0
    ns
    REF_CLK data clock fall VIH(max) to VIL(min)
    tRMXF
    1.0
    4.0
    ns
    Note:
    1. The symbols used for timing specifications herein follow the pattern of t(first three 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, tRMTKHDX symbolizes RMII
    transmit timing (RMT) for the time tRMX clock reference (K) going high (H) until data outputs (D) are invalid (X). Note that, in
    general, the clock reference symbol representation is based on two to three letters representing the clock of a particular
    functional. For example, the subscript of tRMX represents the RMII(RM) reference (X) clock. For rise and fall times, the latter
    convention is used with the appropriate letter: R (rise) or F (fall).
    Table 28. RMII Receive AC Timing Specifications
    At recommended operating conditions with LVDD of 3.3 V ± 300 mv
    Parameter/Condition
    Symbol 1
    Min
    Typ
    Max
    Unit
    REF_CLK clock period
    tRMX
    —20—
    ns
    REF_CLK duty cycle
    tRMXH/tRMX
    35
    65
    %
    REF_CLK
    TXD[1:0]
    tRMTKHDX
    tRMX
    tRMXH
    tRMXR
    tRMXF
    TX_EN
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