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MPC8306EC датащи(PDF) 34 Page - Freescale Semiconductor, Inc |
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MPC8306EC датащи(HTML) 34 Page - Freescale Semiconductor, Inc |
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34 / 76 page ![]() MPC8306 PowerQUICC II Pro Integrated Communications Processor Family Hardware Specifications, Rev. 0 34 Freescale Semiconductor USB Figure 24 shows the timing with internal clock. Figure 24. AC Timing (Internal Clock) Diagram 11 USB 11.1 USB Controller This section provides the AC and DC electrical specifications for the USB (ULPI) interface. 11.1.1 USB DC Electrical Characteristics Table 32 provides the DC electrical characteristics for the USB interface. 11.1.2 USB AC Electrical Specifications Table 33 describes the general timing parameters of the USB interface. Table 32. USB DC Electrical Characteristics Parameter Symbol Min Max Unit High-level input voltage VIH 2.0 OVDD +0.3 V Low-level input voltage VIL –0.3 0.8 V Input current IIN —±5 A High-level output voltage, IOH = –100 AVOH OVDD –0.2 — V Low-level output voltage, IOL = 100 AVOL —0.2 V Table 33. USB General Timing Parameters Parameter Symbol1 Min Max Unit Notes USB clock cycle time tUSCK 15 — ns Input setup to USB clock—all inputs tUSIVKH 4— ns input hold to USB clock—all inputs tUSIXKH 1— ns USB clock to output valid—all outputs (except USBDR_STP_USBDR_STP) tUSKHOV —7 ns Serial CLK (Output) tHIIXKH tHIKHOV Input Signals: (See Note) Output Signals: (See Note) tHIIVKH tHIKHOX Note: The clock edge is selectable. |
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