English

iPod Accessory Protocol Interface Specification

This document specifies the electrical and software interfaces to the Apple iPod that are available to accessory devices. "Protocol Features and Availability" gives an overview of the General and accessory lingoes and their availability. "The Protocol Core and the General Lingo" gives an overview of the iAP and describes the General Lingo, which all accessories must support. "Accessory Lingoes" describes the various device-specific accessory lingoes that are part of the iAP and their commands. "The Extended Interface Protocol" describes iAP Lingo 0x04, which allows the user interface of the iPod to be translated to other environments. "Accessory Identification" specifies the Identify Device Preferences and Settings (IDPS) process which accessories identify themselves. "Transaction IDs" describes the transaction ID parameters used by the Location lingo, the IDPS process, and multisection data transfers. "Multisection Data Transfers tells how to transfer amounts of data larger than the data receiver’s maximum incoming packet size. "iTunes Tagging" describes the iTunes tagging feature for HD and FM radio accessories. "Nike + iPod Cardio Equipment System" describes the use of the Sport

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