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    參數(shù)資料
    型號: IDT82V3280PFG
    廠商: IDT, Integrated Device Technology Inc
    文件頁數(shù): 93/171頁
    文件大?。?/td> 0K
    描述: IC PLL WAN SE STRATUM 2 100-TQFP
    標(biāo)準(zhǔn)包裝: 1
    類型: 時鐘/頻率發(fā)生器,多路復(fù)用器
    PLL:
    主要目的: 以太網(wǎng),SONET/SDH,Stratum
    輸入: CMOS,LVDS,PECL
    輸出: CMOS,LVDS,PECL
    電路數(shù): 1
    比率 - 輸入:輸出: 14:9
    差分 - 輸入:輸出: 是/是
    頻率 - 最大: 622.08MHz
    電源電壓: 3 V ~ 3.6 V
    工作溫度: -40°C ~ 85°C
    安裝類型: 表面貼裝
    封裝/外殼: 100-LQFP
    供應(yīng)商設(shè)備封裝: 100-TQFP(14x14)
    包裝: 托盤
    其它名稱: 82V3280PFG
    IDT82V3280
    WAN PLL
    Functional Description
    28
    December 9, 2008
    3.7.3
    PHASE LOCK ALARM (T0 ONLY)
    A phase lock alarm will be raised when the selected input clock can
    not be locked in T0 DPLL within a certain period. This period can be cal-
    culated as follows:
    Period (sec.) = TIME_OUT_VALUE[5:0] X MULTI_FACTOR[1:0]
    The phase lock alarm is indicated by the corresponding
    INn_PH_LOCK_ALARM bit (14
    ≥ n ≥ 1).
    The phase lock alarm can be cleared by the following two ways, as
    selected by the PH_ALARM_TIMEOUT bit:
    Be cleared when a ‘1’ is written to the corresponding
    INn_PH_LOCK_ALARM bit;
    Be cleared after the period (= TIME_OUT_VALUE[5:0] X
    MULTI_FACTOR[1:0] in second) which starts from when the
    alarm is raised.
    The selected input clock with a phase lock alarm is disqualified for T0
    DPLL locking.
    Note that no phase lock alarm is raised if the T4 selected input clock
    can not be locked.
    Table 12: Related Bit / Register in Chapter 3.7
    Bit
    Register
    Address (Hex)
    FAST_LOS_SW
    PHASE_LOSS_FINE_LIMIT_CNFG
    5B *
    PH_LOS_FINE_LIMT[2:0]
    FINE_PH_LOS_LIMT_EN
    MULTI_PH_8K_4K_2K_EN
    PHASE_LOSS_COARSE_LIMIT_CNFG
    5A *
    WIDE_EN
    PH_LOS_COARSE_LIMT[3:0]
    COARSE_PH_LOS_LIMT_EN
    T0_DPLL_SOFT_FREQ_ALARM
    OPERATING_STS
    52
    T4_DPLL_SOFT_FREQ_ALARM
    T0_DPLL_LOCK
    T4_DPLL_LOCK
    DPLL_FREQ_SOFT_LIMT[6:0]
    DPLL_FREQ_SOFT_LIMIT_CNFG
    65
    FREQ_LIMT_PH_LOS
    DPLL_FREQ_HARD_LIMT[15:0]
    DPLL_FREQ_HARD_LIMIT[15:8]_CNFG,
    DPLL_FREQ_HARD_LIMIT[7:0]_CNFG
    67, 66
    T4_STS 1
    INTERRUPTS3_STS
    0F
    T4_STS 2
    INTERRUPTS3_ENABLE_CNFG
    12
    TIME_OUT_VALUE[5:0]
    PHASE_ALARM_TIME_OUT_CNFG
    08
    MULTI_FACTOR[1:0]
    INn_PH_LOCK_ALARM (14
    ≥ n ≥ 1)
    IN1_IN2_STS ~ IN13_IN14_STS
    43 ~ 49
    PH_ALARM_TIMEOUT
    INPUT_MODE_CNFG
    09
    T4_T0_SEL
    T4_T0_REG_SEL_CNFG
    07
    Note: * The setting in the 5A and 5B registers is either for T0 path or for T4 path, as determined by the T4_T0_SEL bit.
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