參數(shù)資料
      型號(hào): MPC8347VRAGDA
      廠商: FREESCALE SEMICONDUCTOR INC
      元件分類: 微控制器/微處理器
      英文描述: 32-BIT, 400 MHz, MICROPROCESSOR, PBGA620
      封裝: 29 X 29 MM, 2.46 MM HEIGHT, 1 MM PITCH, LEAD FREE, PLASTIC, BGA-620
      文件頁(yè)數(shù): 71/120頁(yè)
      文件大?。?/td> 1349K
      代理商: MPC8347VRAGDA
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      MPC8347EA PowerQUICC II Pro Integrated Host Processor Hardware Specifications, Rev. 2
      54
      Freescale Semiconductor
      JTAG
      Figure 25 provides the AC test load for TDO and the boundary-scan outputs of the MPC8347EA.
      Figure 25. AC Test Load for the JTAG Interface
      Figure 26 provides the JTAG clock input timing diagram.
      Figure 26. JTAG Clock Input Timing Diagram
      Output hold times:
      Boundary-scan data
      TDO
      tJTKLDX
      tJTKLOX
      2
      ns
      5
      JTAG external clock to output high impedance:
      Boundary-scan data
      TDO
      tJTKLDZ
      tJTKLOZ
      2
      19
      9
      ns
      5, 6
      Notes:
      1. All outputs are measured from the midpoint voltage of the falling/rising edge of tTCLK to the midpoint of the signal in question.
      The output timings are measured at the pins. All output timings assume a purely resistive 50
      Ω load (see Figure 25).
      Time-of-flight delays must be added for trace lengths, vias, and connectors in the system.
      2. The symbols for timing specifications follow the pattern of t(first two letters of functional block)(signal)(state) (reference)(state) for inputs
      and t(first two letters of functional block)(reference)(state)(signal)(state) for outputs. For example, tJTDVKH symbolizes JTAG device timing
      (JT) with respect to the time data input signals (D) reaching the valid state (V) relative to the tJTG clock reference (K) going
      to the high (H) state or setup time. Also, tJTDXKH symbolizes JTAG timing (JT) with respect to the time data input signals (D)
      went invalid (X) relative to the tJTG clock reference (K) going to the high (H) state. In general, the clock reference symbol is
      based on three letters representing the clock of a particular function. For rise and fall times, the latter convention is used with
      the appropriate letter: R (rise) or F (fall).
      3. TRST is an asynchronous level sensitive signal. The setup time is for test purposes only.
      4. Non-JTAG signal input timing with respect to tTCLK.
      5. Non-JTAG signal output timing with respect to tTCLK.
      6. Guaranteed by design and characterization.
      Table 40. JTAG AC Timing Specifications (Independent of CLKIN) 1 (continued)
      At recommended operating conditions (see Table 2).
      Parameter
      Symbol 2
      Min
      Max
      Unit
      Notes
      Output
      Z0 = 50 Ω
      OVDD/2
      RL = 50 Ω
      JTAG
      tJTKHKL
      tJTGR
      External Clock
      VM
      tJTG
      tJTGF
      VM = Midpoint Voltage (OVDD/2)
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