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  • 參數(shù)資料
    型號(hào): MPC826XACZUSPMX
    廠商: Motorola, Inc.
    英文描述: MPC826xA (HiP4) Family Hardware Specifications
    中文描述: MPC826xA(HiP4)家庭硬件規(guī)格
    文件頁(yè)數(shù): 18/48頁(yè)
    文件大?。?/td> 315K
    代理商: MPC826XACZUSPMX
    18
    MPC826xA (HiP4) Family Hardware Specifications
    PRELIMINARY—SUBJECT TO CHANGE WITHOUT NOTICE
    MOTOROLA
    Electrical and Thermal Characteristics
    Figure 9 shows signal behavior for all parity modes (including ECC, RMW parity, and standard parity).
    Figure 9. Parity Mode Diagram
    Figure 10 shows signal behavior in MEMC mode.
    Figure 10. MEMC Mode Diagram
    NOTE
    Generally, all MPC826xA bus and system output signals are driven from
    the rising edge of the input clock (CLKin). Memory controller signals,
    however, trigger on four points within a CLKin cycle. Each cycle is
    divided by four internal ticks: T1, T2, T3, and T4. T1 always occurs at the
    rising edge, and T3 at the falling edge, of CLKin. However, the spacing of
    T2 and T4 depends on the PLL clock ratio selected, as shown in Table 13.
    Table 13. Tick Spacing for Memory Controller Signals
    PLL Clock Ratio
    Tick Spacing (T1 Occurs at the Rising Edge of CLKin)
    T2
    T3
    T4
    1:2, 1:3, 1:4, 1:5, 1:6
    1/4 CLKin
    1/2 CLKin
    3/4 CLKin
    1:2.5
    3/10 CLKin
    1/2 CLKin
    8/10 CLKin
    1:3.5
    4/14 CLKin
    1/2 CLKin
    11/14 CLKin
    CLKin
    DATA bus, ECC, and PARITY mode input signals
    DP mode input signal
    DP mode output signal
    sp13
    sp10
    sp14
    sp10
    sp33b/sp30
    CLKin
    V_CLK
    Memory controller signals
    sp34/sp30
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