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    參數(shù)資料
    型號: MPC8547HXAQJ
    廠商: FREESCALE SEMICONDUCTOR INC
    元件分類: 微控制器/微處理器
    英文描述: 32-BIT, 1000 MHz, MICROPROCESSOR, CBGA783
    封裝: 29 X 29 MM, 1 MM PITCH, FLIP CHIP, CERAMIC, BGA-783
    文件頁數(shù): 117/142頁
    文件大?。?/td> 1504K
    代理商: MPC8547HXAQJ
    MPC8548E PowerQUICC III Integrated Processor Hardware Specifications, Rev. 5
    76
    Freescale Semiconductor
    Serial RapidIO
    17 Serial RapidIO
    This section describes the DC and AC electrical specifications for the RapidIO interface of the
    MPC8548E, for the LP-Serial physical layer. The electrical specifications cover both single- and
    multiple-lane links. Two transmitters (short and long run) and a single receiver are specified for each of
    three baud rates, 1.25, 2.50, and 3.125 GBaud.
    Two transmitter specifications allow for solutions ranging from simple board-to-board interconnect to
    driving two connectors across a backplane. A single receiver specification is given that will accept signals
    from both the short- and long-run transmitter specifications.
    The short-run transmitter should be used mainly for chip-to-chip connections on either the same
    printed-circuit board or across a single connector. This covers the case where connections are made to a
    mezzanine (daughter) card. The minimum swings of the short-run specification reduce the overall power
    used by the transceivers.
    The long-run transmitter specifications use larger voltage swings that are capable of driving signals across
    backplanes. This allows a user to drive signals across two connectors and a backplane. The specifications
    allow a distance of at least 50 cm at all baud rates.
    All unit intervals are specified with a tolerance of ±100 ppm. The worst case frequency difference between
    any transmit and receive clock will be 200 ppm.
    To ensure interoperability between drivers and receivers of different vendors and technologies, AC
    coupling at the receiver input must be used.
    17.1
    DC Requirements for Serial RapidIO SD_REF_CLK and
    SD_REF_CLK
    For more information, see Section 15.2, “SerDes Reference Clocks.”
    17.2
    AC Requirements for Serial RapidIO SD_REF_CLK and
    SD_REF_CLK
    Table 54 lists the Serial RapidIO SD_REF_CLK and SD_REF_CLK AC requirements.
    Table 54. SD_REF_CLK and SD_REF_CLK AC Requirements
    Symbol
    Parameter Description
    Min
    Typ
    Max
    Unit
    Comments
    tREF
    REFCLK cycle time
    10(8)
    ns
    8 ns applies only to serial
    RapidIO with 125-MHz reference
    clock
    tREFCJ
    REFCLK cycle-to-cycle jitter. Difference in the
    period of any two adjacent REFCLK cycles.
    80
    ps
    tREFPJ
    Phase jitter. Deviation in edge location with
    respect to mean edge location.
    –40
    40
    ps
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