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    參數(shù)資料
    型號(hào): UPD720113
    廠商: NEC Corp.
    英文描述: USB 2.0 HUB CONTROLLER
    中文描述: USB 2.0集線器控制器
    文件頁(yè)數(shù): 17/32頁(yè)
    文件大?。?/td> 362K
    代理商: UPD720113
    Data Sheet S16618EJ3V0DS
    17
    μ
    PD720113
    Over-current Response Timing
    Parameter
    Symbol
    Condition
    MIN.
    TYP.
    MAX.
    Unit
    Over-current response time from CSB
    low to PPB high (Figure 2-7)
    t
    OC
    500
    625
    μ
    s
    Figure 2-7. Over-current Response Timing
    CSB(7:1)
    PPB(7:1)
    t
    OC
    Figure 2-8. CSB/PPB Timing
    Bus reset
    500
    μ
    s
    500
    μ
    s
    500
    μ
    s
    500
    μ
    s
    Hub power supply
    PPB pin output
    CSB pin input
    CSB pin operation region
    Up port D
    +
    line
    Port power
    supply ON
    Output
    cut-off
    Overcurrent
    generation
    CSB detection
    delay time
    CSB active
    period
    Device
    connection
    inrush current
    Bus power: Up port connection
    Self power: Power supply ON
    Remark
    The active period of the CSB pin is in effect only when the PPB pin is ON.
    There is a delay time of approximately 500
    μ
    s duration at the CSB pin.
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