GF82.85-P-3136LE COMAND Controller Unit, Component Description

GF82.85-P-3136LE COMAND Controller Unit, Component Description
- with CODE (527) COMAND APS with single DVD drive (with navigation)
- with CODE (526) COMAND with single DVD drive (without navigation)

Component Identification:

Location
The COMAND controller unit is installed into the center console.

Component Identification:

Location
The COMAND controller unit is installed into the center console.

Task
The COMAND controller unit fulfills the following tasks:
^ Processing unit for entertainment and communications systems
^ Reading in of signals
^ Evaluation of input factors
^ Actuates output media

Processing unit for entertainment and communications systems
The COMAND controller unit provides the user with a structured and uniform interface via the COMAND display (A40/8) (without code (867) SPLITVIEW) or the SPLITVIEW display (A40/10) (with code (867) SPLITVIEW).
The COMAND controller unit generates uniform and user-friendly displays for all individual components integrated in the system.

Reading in of signals
The input factors are read in via the following connections:
^ Direct line
^ Controller Area Network (data bus/CAN bus) (CAN)
^ Media Oriented System Transport (MOST)

Direct line
The following signals are read in via direct lines:
- Wake-up (MOST)
- AUX input
- Global Positioning System (GPS) signal
- Composite Video Baseband Signal (CVBS) from the reversing camera power supply module (N66/10) (in model 221 with code (218) Reversing camera)
- Y - brightness (luminance)/C - color information (chrominance) (Y/C) from TV combination tuner (analog/digital) (A90/1) (with code (863) Digital/analog TV tuner)

CAN
The signals are read in via telematics CAN (CAN A) and central CAN (CAN F). The functions resulting therefrom are described in the corresponding function descriptions (see block diagram or function schematic).

MOST
Depending on the equipment, the COMAND controller unit communicates with the following control units via MOST:
- TV combination tuner (analog/digital) (A90/1) (with code (863) Digital/analog TV tuner)
- Voice control system control unit (VCS [SBS]) (N41/3) (up to 31.5.09 with code (813) Voice control system (VCS [SBS]))
- Digital Audio Broadcasting control unit (N87/3) (with code (537) Digital radio)
- Audio tuner control unit (N93/1)
- Universal Portable Cell Phone Interface (UPCI [UHI]) control unit (N123/1) (up to 31.5.09 with code (386) Preinstallation for telephone "cell phone", UPCI system)
- Media interface control unit (N125/1) (as of 1.6.09 with code (518) Media interface)

Evaluation of input factors
The input factors are processed and evaluated by the COMAND controller unit.

Actuates output media
Output media are actuated with the following connection:
^ Direct line
^ CAN
^ MOST

Direct line
The following output media are actuated via direct lines:
- COMAND display or SPLITVIEW display via LVDS line
- DVD player (A40/4) (in model 221 with code (864) Rear entertainment system) via LVDS line

LVDS lines are used to transfer picture and video signals.

The following system components are actuated internally:
- Map navigation with hard disk (HDD) as a data memory (with code (527) COMAND APS with single DVD drive (with navigation))
- Card reader for Personal Computer Memory Card International Association (PCMCIA) cards with MP3 files
- DVD ROM drive (single slot or 6-disk DVD changer with single slot (with code (814) DVD changer))

CAN
The signals are transmitted via telematics CAN and central CAN. The functions resulting therefrom are described in the corresponding function descriptions (see block diagram or function schematic).

MOST
Depending on the equipment, the COMAND controller unit communicates with the following control units via MOST:
- TV combination tuner (analog/digital)
- Voice control system (VCS [SBS]) control unit
- Digital Audio Broadcasting control unit
- Audio tuner control unit
- Universal Portable CTEL Interface (UPCI [UHI]) control unit
- Media interface control unit

Design
Integrated into the COMAND controller unit are the following:
- DVD drive (without code (814) DVD changer)
- DVD changer (with code (814) DVD changer)
- Central computer
- Interfaces to MOST, telematics CAN, and central CAN
- Navigation processor (with code (527) COMAND APS with single DVD drive (with navigation))
- Hard disk

Diagnosis
The COMAND controller unit serves as the diagnostic interface for all control units at the MOST and at the telematics CAN. The errors that have occurred can be read out via diagnostic CAN (CAN D) and data link connector (X11/4).

Variants
COMAND controller unit:
- With code (526) COMAND with single DVD drive (without navigation)
- With code (526) COMAND with single DVD drive (without navigation) and code (814) DVD changer
- With code (527) COMAND APS with Single DVD disk drive (with navigation)
- With code (527) COMAND APS with single DVD drive (with navigation) and with code (814) DVD changer