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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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MPC8540CPX667JC датащи(PDF) 34 Page - Freescale Semiconductor, Inc |
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MPC8540CPX667JC датащи(HTML) 34 Page - Freescale Semiconductor, Inc |
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34 / 104 page  MPC8540 Integrated Processor Hardware Specifications, Rev. 4 34 Freescale Semiconductor Ethernet: Three-Speed,10/100, MII Management Figure 15 shows the MII receive AC timing diagram. Figure 15. MII Receive AC Timing Diagram 8.4 Ethernet Management Interface Electrical Characteristics The electrical characteristics specified here apply to MII management interface signals MDIO (management data input/output) and MDC (management data clock). The electrical characteristics for GMII, RGMII, TBI and RTBI are specified in Section 8.1, “Three-Speed Ethernet Controller (TSEC) (10/100/1Gb Mbps)—GMII/MII/TBI/RGMII/RTBI Electrical Characteristics.” 8.4.1 MII Management DC Electrical Characteristics The MDC and MDIO are defined to operate at a supply voltage of 3.3 V. The DC electrical characteristics for MDIO and MDC are provided in Table 33. Table 33. MII Management DC Electrical Characteristics Parameter Symbol Min Max Unit Supply voltage (3.3 V) OVDD 3.13 3.47 V Output high voltage (OVDD = Min, IOH = –1.0 mA) VOH 2.10 OVDD + 0.3 V Output low voltage (OVDD = Min, IOL = 1.0 mA) VOL GND 0.50 V Input high voltage VIH 1.70 — V Input low voltage VIL —0.90 V Input high current (OVDD = Max, VIN 1 = 2.1 V) IIH —40 μA Input low current (OVDD = Max, VIN = 0.5 V) IIL –600 — μA Note: 1.Note that the symbol VIN, in this case, represents the OVIN symbol referenced in Table 1 and Table 2. RX_CLK RXD[3:0] tMRDXKH tMRX tMRXH tMRXR tMRXF RX_DV RX_ER tMRDVKH Valid Data |
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