• 參數(shù)資料
    型號: MPC8572EVTARLB
    廠商: FREESCALE SEMICONDUCTOR INC
    元件分類: 微控制器/微處理器
    英文描述: 32-BIT, 1067 MHz, MICROPROCESSOR, PBGA1023
    封裝: 33 X 33 MM, LEAD FREE, PLASTIC, FCBGA-1023
    文件頁數(shù): 130/138頁
    文件大?。?/td> 1502K
    代理商: MPC8572EVTARLB
    MPC8572E PowerQUICC III Integrated Processor Hardware Specifications, Rev. 2
    Freescale Semiconductor
    91
    Serial RapidIO
    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 SD1_REF_CLK and
    SD1_REF_CLK
    For more information, see Section 15.2, “SerDes Reference Clocks.”
    17.2
    AC Requirements for Serial RapidIO SD1_REF_CLK and
    SD1_REF_CLK
    Table 61 lists the AC requirements.
    17.3
    Equalization
    With the use of high speed serial links, the interconnect media will cause degradation of the signal at the
    receiver. Effects such as Inter-Symbol Interference (ISI) or data dependent jitter are produced. This loss
    can be large enough to degrade the eye opening at the receiver beyond what is allowed in the specification.
    To negate a portion of these effects, equalization can be used. The most common equalization techniques
    that can be used are as follows:
    A passive high pass filter network placed at the receiver. This is often referred to as passive
    equalization.
    The use of active circuits in the receiver. This is often referred to as adaptive equalization.
    17.4
    Explanatory Note on Transmitter and Receiver Specifications
    AC electrical specifications are given for transmitter and receiver. Long run and short run interfaces at
    three baud rates (a total of six cases) are described.
    The parameters for the AC electrical specifications are guided by the XAUI electrical interface specified
    in Clause 47 of IEEE 802.3ae-2002.
    XAUI has similar application goals to serial RapidIO, as described in Section 8.1. The goal of this standard
    is that electrical designs for serial RapidIO can reuse electrical designs for XAUI, suitably modified for
    applications at the baud intervals and reaches described herein.
    Table 61. SD
    n_REF_CLK and SDn_REF_CLK AC Requirements
    Symbol
    Parameter Description
    Min
    Typical
    Max
    Units
    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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