1. 參數(shù)資料
      型號: MPC8347ECVRADDA
      廠商: FREESCALE SEMICONDUCTOR INC
      元件分類: 微控制器/微處理器
      英文描述: 32-BIT, 266 MHz, MICROPROCESSOR, PBGA620
      封裝: 29 X 29 MM, 2.46 MM HEIGHT, 1 MM PITCH, LEAD FREE, PLASTIC, BGA-620
      文件頁數(shù): 49/120頁
      文件大小: 1349K
      代理商: MPC8347ECVRADDA
      MPC8347EA PowerQUICC II Pro Integrated Host Processor Hardware Specifications, Rev. 2
      34
      Freescale Semiconductor
      Ethernet: Three-Speed Ethernet, MII Management
      8.2.2.2
      MII Receive AC Timing Specifications
      Table 27 provides the MII receive AC timing specifications.
      Figure 10 provides the AC test load for TSEC.
      Figure 10. TSEC AC Test Load
      Figure 11 shows the MII receive AC timing diagram.
      Figure 11. MII Receive AC Timing Diagram
      Table 27. MII Receive AC Timing Specifications
      At recommended operating conditions with LVDD / OVDD of 3.3 V ± 10%.
      Parameter/Condition
      Symbol 1
      Min
      Typ
      Max
      Unit
      RX_CLK clock period 10 Mbps
      tMRX
      400
      ns
      RX_CLK clock period 100 Mbps
      tMRX
      —40—
      ns
      RX_CLK duty cycle
      tMRXH/tMRX
      35
      65
      %
      RXD[3:0], RX_DV, RX_ER setup time to RX_CLK
      tMRDVKH
      10.0
      ns
      RXD[3:0], RX_DV, RX_ER hold time to RX_CLK
      tMRDXKH
      10.0
      ns
      RX_CLK clock rise VIL(min) to VIH(max)
      tMRXR
      1.0
      4.0
      ns
      RX_CLK clock fall time VIH(max) to VIL(min)
      tMRXF
      1.0
      4.0
      ns
      Note:
      1. 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, tMRDVKH symbolizes MII receive timing
      (MR) with respect to the time data input signals (D) reach the valid state (V) relative to the tMRX clock reference (K) going to
      the high (H) state or setup time. Also, tMRDXKL symbolizes MII receive timing (GR) with respect to the time data input signals
      (D) went invalid (X) relative to the tMRX clock reference (K) going to the low (L) state or hold time. In general, the clock
      reference symbol is based on three letters representing the clock of a particular functionl. For example, the subscript of tMRX
      represents the MII (M) receive (RX) clock. For rise and fall times, the latter convention is used with the appropriate letter: R
      (rise) or F (fall).
      Output
      Z0 = 50 Ω
      LVDD/2
      RL = 50 Ω
      RX_CLK
      RXD[3:0]
      tMRDXKH
      tMRX
      tMRXH
      tMRXR
      tMRXF
      RX_DV
      RX_ER
      tMRDVKH
      Valid Data
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