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  • 參數(shù)資料
    型號: MPC8572ECPXATLB
    廠商: FREESCALE SEMICONDUCTOR INC
    元件分類: 微控制器/微處理器
    英文描述: 32-BIT, 1200 MHz, MICROPROCESSOR, PBGA1023
    封裝: 33 X 33 MM, PLASTIC, FCBGA-1023
    文件頁數(shù): 129/138頁
    文件大?。?/td> 1502K
    代理商: MPC8572ECPXATLB
    MPC8572E PowerQUICC III Integrated Processor Hardware Specifications, Rev. 2
    90
    Freescale Semiconductor
    Serial RapidIO
    16.5.1
    Compliance Test and Measurement Load
    The AC timing and voltage parameters must be verified at the measurement point, as specified within 0.2
    inches of the package pins, into a test/measurement load shown in Figure 57.
    NOTE
    The allowance of the measurement point to be within 0.2 inches of the
    package pins is meant to acknowledge that package/board routing may
    benefit from D+ and D– not being exactly matched in length at the package
    pin boundary.
    Figure 57. Compliance Test/Measurement Load
    17 Serial RapidIO
    This section describes the DC and AC electrical specifications for the RapidIO interface of the MPC8572E
    for the LP-Serial physical layer. The electrical specifications cover both single and multiple-lane links.
    Two transmitters (short run 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 run 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.
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