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      參數(shù)資料
      型號: ISP1562
      廠商: NXP Semiconductors N.V.
      英文描述: Hi-Speed Universal Serial Bus PCI Host Controller
      中文描述: 高速通用串行總線PCI主機控制器
      文件頁數(shù): 83/98頁
      文件大?。?/td> 442K
      代理商: ISP1562
      9397 750 14223
      Koninklijke Philips Electronics N.V. 2005. All rights reserved.
      Product data sheet
      Rev. 01 — 14 July 2005
      83 of 98
      Philips Semiconductors
      ISP1562
      USB PCI Host Controller
      16. Dynamic characteristics
      [1]
      Recommended accuracy of the clock frequency is 50 ppm for the crystal and oscillator.
      [2]
      Suggested values for external capacitors when using a crystal are 22 pF to 27 pF.
      [1]
      The capacitive load for each bus line (C
      b
      ) is specified in pF. To meet the specification for V
      OL
      and the maximum rise time (300 ns), use
      an external pull-up resistor with R
      UP(max)
      = 850/C
      b
      k
      and R
      UP(min)
      = (V
      CC(I/O)
      0.4)/3 k
      .
      [1]
      Standard load is 10 pF together with a pull-up and pull-down resistor of 10 k
      .
      Table 116: Dynamic characteristics: system clock timing
      Symbol
      Parameter
      Reset
      t
      W(RESET_N)
      pulse width on pin RESET_N crystal oscillator running
      Crystal oscillator
      f
      clk
      PCI clock
      external clock input
      [1]
      R
      S
      series resistance
      C
      L
      load capacitance
      External clock input
      V
      I
      input voltage
      J
      external clock jitter
      t
      CR
      , t
      CF
      rise time and fall time
      δ
      clock duty cycle
      Conditions
      Min
      Typ
      Max
      Unit
      -
      10
      -
      μ
      s
      31
      -
      -
      -
      -
      12
      -
      18
      33
      -
      100
      -
      MHz
      MHz
      pF
      crystal
      [2]
      1.65
      -
      -
      -
      1.8
      -
      -
      50
      1.95
      50
      3
      -
      V
      ppm
      ns
      %
      Table 117: Dynamic characteristics: I
      2
      C-bus interface (SDA and SCL)
      V
      CC(I/O)
      = 3.0 V to 3.6 V; T
      amb
      =
      40
      °
      C to +85
      °
      C; unless otherwise specified.
      Symbol
      Parameter
      t
      CF
      output fall time V
      IH
      to V
      IL
      Conditions
      10 < C
      b
      < 400
      [1]
      Min
      -
      Typ
      0
      Max
      250
      Unit
      ns
      Table 118: Dynamic characteristics: PCI interface block
      V
      CC(I/O)
      = 3.0 V to 3.6 V; T
      amb
      =
      40
      °
      C to +85
      °
      C; unless otherwise specified.
      Symbol
      Parameter
      SR
      output slew rate (rise, fall)
      Conditions
      standard load
      [1]
      Min
      1
      Typ
      -
      Max
      4
      Unit
      V/ns
      Table 119: Dynamic characteristics: high-speed source electrical characteristics
      V
      DDA_AUX
      = 3.0 V to 3.6 V; T
      amb
      =
      40
      °
      C to +85
      °
      C; unless otherwise specified.
      Symbol Parameter
      Driver characteristics
      t
      HSR
      high-speed differential rise time
      t
      HSF
      high-speed differential fall time
      Z
      HSDRV
      drive output resistance; also serves
      as a high-speed termination
      Conditions
      Min
      Typ
      Max
      Unit
      10 % to 90 %
      90 % to 10 %
      includes the R
      S
      resistor
      500
      500
      40.5
      -
      -
      45
      -
      -
      49.5
      ps
      ps
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