參數(shù)資料
    型號: MC8640DTHX1000HE
    廠商: Freescale Semiconductor
    文件頁數(shù): 61/130頁
    文件大?。?/td> 0K
    描述: IC DUAL CORE PROCESSOR 1023-CBGA
    標(biāo)準(zhǔn)包裝: 1
    系列: MPC86xx
    處理器類型: 32-位 MPC86xx PowerPC
    速度: 1.0GHz
    電壓: 1.05V
    安裝類型: 表面貼裝
    封裝/外殼: 1023-BCBGA,F(xiàn)CCBGA
    供應(yīng)商設(shè)備封裝: 1023-FCCBGA(33x33)
    包裝: 托盤
    MPC8640 and MPC8640D Integrated Host Processor Hardware Specifications, Rev. 3
    36
    Freescale Semiconductor
    Ethernet: Enhanced Three-Speed Ethernet (eTSEC), MII Management
    Figure 17 shows the TBI receive AC timing diagram.
    Figure 17. TBI Receive AC Timing Diagram
    8.2.5
    TBI Single-Clock Mode AC Specifications
    When the eTSEC is configured for TBI modes, all clocks are supplied from external sources to the relevant
    eTSEC interface. In single-clock TBI mode, when TBICON[CLKSEL] = 1 a 125-MHz TBI receive clock
    is supplied on TSECn_RX_CLK pin (no receive clock is used on TSECn_TX_CLK in this mode, whereas
    for the dual-clock mode this is the PMA1 receive clock). The 125-MHz transmit clock is applied on the
    TSEC_GTX_CLK125 pin in all TBI modes.
    A summary of the single-clock TBI mode AC specifications for receive appears in Table 34.
    Table 34. TBI single-clock Mode Receive AC Timing Specification
    At recommended operating conditions with L/TVDD of 3.3 V ± 5% and 2.5 V ± 5%.
    Parameter
    Symbol
    Min
    Typ
    Max
    Unit
    RX_CLK clock period
    tTRR
    1
    1 ±100 ppm tolerance on RX_CLK frequency
    7.5
    8.0
    8.5
    ns
    RX_CLK duty cycle
    tTRRH/tTRR
    40
    50
    60
    %
    RX_CLK peak-to-peak jitter
    tTRRJ
    250
    ps
    Rise time RX_CLK (20%–80%)
    tTRRR
    ——
    1.0
    ns
    Fall time RX_CLK (80%–20%)
    tTRRF
    ——
    1.0
    ns
    RCG[9:0] setup time to RX_CLK rising edge
    tTRRDVKH
    2.0
    ns
    RCG[9:0] hold time to RX_CLK rising edge
    tTRRDXKH
    1.0
    ns
    PMA_RX_CLK1
    RCG[9:0]
    tTRX
    tTRXH
    tTRXR
    tTRXF
    tTRDVKH
    PMA_RX_CLK0
    tTRDXKH
    tTRDVKH
    tTRDXKH
    tSKTRX
    tTRXH
    Valid Data
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