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LAN9500AI 数据表(PDF) 115 Page - Microchip Technology |
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LAN9500AI 数据表(HTML) 115 Page - Microchip Technology |
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115 / 213 page  2010 - 2015 Microchip Technology Inc. DS00001875A-page 115 LAN950x FIGURE 6-2: PME OPERATION Wakeup Event Detected By Device? Host & Chipset Powered Off Device Asserts PME True False VBUS_DET Set To 0 By EC Or Via Circuitry EC Sets PME_MODE_SEL = 1 And Pulses PME_CLEAR Low Device Has EEPROM With GPIO PME Enable =1, Enters PME Mode EC Detects PME EC To Wake System To Process Wakeup Event? EC Asserts PME_CLEAR Device Resets And Deasserts PME VBUS_DET Set to 1 By EC Or Via Circuitry EC Sets PME_MODE_SEL = 0 And Asserts PME_CLEAR EC Signals Enable To Host Device Resets And Deasserts PME Device Connects To USB Bus Device Is In Normal Operation Yes No |
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