GF82.60-P-2020RC Media Interface Function

GF82.60-P-2020RC Media Interface Function
- with CODE (518) Media interface

Function requirements
^ Status "Circuit 30 ON" or "Circuit 15R ON"

Depending on the equipment version, one of the following audio devices is installed (hereinafter called "Audio equipment"):
- Radio (A2), with code (510) Audio 20 including CD changer
- Radio and navigation unit (A2/56), with code (525) MB Audio 50 APS radio or with code (511) Audio 50 APS with DVD changer
- COMAND operating, display and controller unit (A40/3), with code (527) COMAND APS with single DVD drive (with navigation) or with code (512) COMAND APS with DVD changer

General
The media interface function is also called a Universal Consumer Electronic Interface (UCI). It allows the following portable terminals to be connected to the "audio equipment" via an adapter cable, the media interface electrical connector 1 (X18/67), the media interface control unit (N125/1) and the Media Oriented System Transport (MOST):
- AUX devices (class 1)
- iPod or serial USB devices (Media Transfer Protocol (MTP)) (class 2)
- Special USB devices (mass storage device) (class 3)

AUX devices without control can be connected to the AUX jack. iPods can be connected to the iPod connector.
USB devices can be connected to the USB jack.
MTP devices can be connected to the USB jack and AUX jack.

The conventional AUX jack installed in the glove box is eliminated.

Operating instructions
The portable devices listed are controlled using one of the following controls:
- Buttons on "Audio equipment"
- Left multifunction steering wheel button group (S110) and right multifunction steering wheel button group (S111)

Menu guidance and graphic representation of the menu guidance is accomplished on the "Audio equipment" display and is dependent on the specific portable device connected.

Function sequence
The media interface control unit is supplied with power over 2 direct lines (circuit 31 and circuit 30). If a portable device is connected, it is recognized by the media interface control unit over the following path:
- Adapter cable
- Media interface connector

The media interface connector then sends an electrical wake-up signal to the "Audio equipment" over a direct line. The "Audio equipment" is switched on and simultaneously activates (wakes up) the MOST, if the "Audio equipment" has not been switched on by a previous action from another system.

Simultaneously the audio signals and data are transferred from the portable device connected to the "Audio equipment" over the following path:
- Adapter cable
- Media interface connector
- Media interface control unit
- MOST

The video signals and data are transferred from the media interface connector to the "Audio equipment" over direct lines.
The user can display the audio signals and data or video signals and data on the "Audio equipment" display depending on the "UCI" menu item selected as well as the specific submenu item (playlists, artists, albums, genres or audio books). The video signals and data are transferred to the "Audio equipment" display internally in the "Audio equipment".

Selection of the "UCI" menu item and the specific submenu item is possible using one of the following controls:
- Buttons on "Audio equipment"
- Multifunction steering wheel button group

The control signals from the buttons on the "Audio equipment" are processed internally.
The control signals of the multifunction steering wheel button groups are forwarded to the "Audio equipment" over the following path:
- Steering LIN
- Steering column tube module (N80)
- Interior CAN

After evaluation of the control signals in the "Audio equipment", they are forwarded by the "Audio equipment" to the portable device connected over the following path:
- MOST
- Media interface control unit
- Media interface connector
- Adapter cable

The portable device connected evaluates the control signals and sends the corresponding audio signals and data to the "Audio equipment" over the following path:
- Adapter cable
- Media interface connector
- Media interface control unit
- MOST

The video signals and data are transmitted by the media interface connector to the "audio equipment" via direct lines (except CODE (862) TV preinstallation).

The video signals and data representation on the "Audio equipment" display takes place internally in the "Audio equipment". In vehicles with code (810) Sound system, the audio signals and data are output by the "audio equipment" to the amplifier for sound system ( N40/3) via the MOST and from there, via direct lines to the following speakers:
- Left door speaker group (H4/1)
- Right door speaker group (H4/2)
- Left rear speaker (H4/7)
- Right rear speaker (H4/8)
- Center cockpit speaker (centerfill) (H4/27)
- Left door tweeter (H4/33)
- Right door tweeter (H4/34)
- Left rear surround speaker (H4/54)
- Right rear surround speaker (H4/57)

On vehicles except code (810) Sound system, the audio signals and data are output by the "Audio equipment", over direct lines, to the following speakers:
- Left front door speaker group
- Right front door speaker group
- Left rear door speaker
- Right rear door speaker
- Center cockpit speaker (centerfill)
- Left door tweeter
- Right door tweeter