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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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M66596FP датащи(PDF) 12 Page - Renesas Technology Corp |
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M66596FP датащи(HTML) 12 Page - Renesas Technology Corp |
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12 / 131 page  M66596FP/WG rev .1.00 2006.3.14 page 12 of 127 1.7.7 External elements integration The controller has the following external elements built into it. Also, because the VBUS pin can withstand 5 V, the user system can input the VBUS signal directly to the controller. (1) Resistors necessary for D+ and D- line control Resistance of D+ and D-line is built in. D+ pull up-registor(Peripheral mode) D+, D- pull-down registor(Host mode) D+, D- terminating resistors (for Hi-Speed operation) D+, D- output resistors (for Full-Speed operation) (2) 48 MHz and 480 MHz PLL One of three external clocks (12 MHz / 24 MHz / 48 MHz) can be selected and Hi-Speed and Full-Speed operation carried out. 1.7.8 Low-power sleep state function The controller is equipped with a low-power sleep state that reduces current consumption. The low-power sleep state functions effectively under the following circumstances. (1) When there is no host or peripheral controller connected (2) When the device state is shifted to the suspended state, and USB data transfer is not necessary The system is returned from the low-power sleep state to the normal operating state using a designated interrupt, or by dummy writing to the controller. |
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