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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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MPC8315ECVRAGDA датащи(PDF) 41 Page - Freescale Semiconductor, Inc |
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MPC8315ECVRAGDA датащи(HTML) 41 Page - Freescale Semiconductor, Inc |
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41 / 112 page  MPC8315E PowerQUICC™ II Pro Processor Hardware Specifications, Rev. 0 Freescale Semiconductor 41 USB Figure 23. USB Signals 10.2 On-Chip USB PHY This section provides the AC and DC electrical specifications for the USB PHY interface of the MPC8315E. For details refer to Tables 7-7 through 7-10, and Table 7-14 in the USB 2.0 Specifications document, and the pull-up/down resistors ECN updates, all available at www.usb.org. Table 41 provides the USB clock input (USB_CLK_IN) DC timing specifications. Table 42 provides the USB clock input (USB_CLK_IN) AC timing specifications. Table 41. USB_CLK_IN DC Electrical Characteristics Parameter Symbol Min Max Unit Input high voltage VIH 2.7 NVDD +0.3 V Input low voltage VIL –0.3 0.4 V Table 42. USB_CLK_IN AC Timing Specifications Parameter/Condition Conditions Symbol Min Typical Max Unit Frequency range — fUSB_CLK_IN —24 — MHz Clock frequency tolerance — tCLK_TOL –0.05 0 0.05 % Reference clock duty cycle Measured at 1.6 V tCLK_DUTY 40 50 60 % Total input jitter/Time interval error Peak to peak value measured with a second order high-pass filter of 500 KHz bandwidth tCLK_PJ — — 200 ps Output Signals tUSKHOV USBDR_CLK Input Signals tUSIXKH tUSIVKH tUSKHOX |
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