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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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MPC8569E датащи(PDF) 62 Page - Freescale Semiconductor, Inc |
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MPC8569E датащи(HTML) 62 Page - Freescale Semiconductor, Inc |
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62 / 127 page  MPC8569E PowerQUICC III Integrated Processor Hardware Specifications, Rev. 1 Ethernet Interface Freescale Semiconductor 62 The following figure provides the AC test load. Figure 23. AC Test Load The following figure shows the TBI receive AC timing diagram. Figure 24. TBI Receive AC Timing Diagram RCG[9:0] hold time to rising PMA_RX_CLK tTRDXKH 1.5 — — ns — PMA_RX_CLK[0:1] clock rise time (20%–80%) tTRXR 0.7 — 2.4 ns 2 PMA_RX_CLK[0:1] clock fall time (80%–20%) tTRXF 0.7 — 2.4 ns 2 Note: 1. The frequency of RX_CLK should not exceed the frequency of gigabit Ethernet reference clock by more than 300 ppm. 2. System/board must be designed to ensure the input requirement to the device is achieved. Proper device operation is guaranteed for inputs meeting this requirement by design, simulation, characterization, or functional testing. Table 33. TBI Receive AC Timing Specifications (continued) For recommended operating conditions, see Table 3 Parameter Symbol Min Typ Max Unit Note Output Z0 = 50 Ω LVDD/2 RL = 50 Ω PMA_RX_CLK1 RCG[9:0] tTRX tTRXH tTRXR tTRXF tTRDVKH PMA_RX_CLK0 tTRDXKH tTRDVKH tTRDXKH tSKTRX tTRXH Valid Data Valid Data |
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