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UCS1001 датащи(PDF) 48 Page - Microchip Technology |
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UCS1001 датащи(HTML) 48 Page - Microchip Technology |
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48 / 59 page ![]() USB Port Power Controller with Charger Emulation Datasheet Revision 1.2 (05-21-12) 48 SMSC UCS1001 DATASHEET 8.10.5 Legacy 7 Charger Emulation Profile The Legacy 7 charger emulation profile does the following: 1. The UCS1001 will apply a voltage on the DPOUT pin using a voltage divider between VBUS and ground with the center tap on the DPOUT pin. 2. VBUS voltage is applied. 3. If the portable device is charging, the UCS1001 will accept that Legacy 7 is the correct charger emulation profile for the attached portable device. The voltage applied to the DPOUT pin will remain in place. The UCS1001 will begin operating in trip mode 4. If the portable device is not charging, the UCS1001 will stop the Legacy 7 charger emulation profile. This will cause the voltage put onto the DPOUT pin to be removed. Emulation reset occurs, and the UCS1001 will initiate the next charger emulation profile. |
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