| 摘要 |
A device 11, such as a mobile telephone, has a connector 12 for receiving an accessory 50. When the accessory is connected, a voltage change occurs at a pin 14, generating an interrupt signal EXT-nINT, and activating a voltage regulator 30 to power the accessory 50 at a terminal 32. The voltage produced at pin 14 is processed 40, 60 and used to identify the accessory 50 which has been connected.
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