“iPod” is a registered trademark of Apple Inc. in the United States and other countries.
Outline
An Auxiliary jack/USB port unit has been adopted which can connect to commercially-available portable audio/USB devices/iPod, and output sound from the speakers via the audio unit.
A USB adaptor has been adopted for transmission of information between a USB device connected to an exterior input unit and the audio unit.
Structural view Block diagram
With audio unit (without display)
With audio unit (with display)
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Test yourself
A quick Mazda 3 quiz: every answer comes with an explanation and a link to the manual page.