Rear display left/right component description - GF82.90-P-4020LE

MODEL 221 up to 31.5.09 with CODE (864) Rear entertainment system as of model year 2009/YoM 08 

Location 

The left rear display is located on the rear of the left front seat head restraint.

The right rear display is located on the rear of the left front seat head restraint.

Task 

The rear displays have the following tasks:

• Visualization of all user-relevant information 
• Reading in of signals 
• Transmitting signals 

Visualization of all user-relevant information 

The following user-relevant information is displayed on the rear displays:

• Graphic displays for user guidance
• Operation
• Display of digital image signals

The background illumination for the specific rear display can be adjusted with the left "-" and "+" keys (brightness symbol). The volume of the audio output can be set with the right "-" and "+" keys (label "VOL").

Reading in of signals 

Signals are read in via the following connections:

• Telematics CAN (CAN A) 
• Low-Voltage Differential Signal (LVDS) line 

Telematics CAN 

The rear displays are subscribers on the telematics CAN.

The signals are read in by the rear displays.

The functions resulting therefrom are described in the corresponding function descriptions (see block diagram or function schematic).

LVDS line 

The following signals are read in via the LVDS line:

• Audio and video signals from audio video controller (N66/3)

Transmitting signals 

The signals are sent via the following connections:

• Direct line 
• Telematics CAN 

Direct line 

The following signals are sent via a direct line:

• Audio signals over the integrated headphone socket

Telematics CAN 

The rear displays are subscribers on the telematics CAN.

The signals are sent by the rear displays.

The functions resulting therefrom are described in the corresponding function descriptions (see block diagram or function schematic).

Design 

An audio amplifier for the headphones socket (3.5 mm) is also integrated into the unit. The rear displays consist of 8 -Thin Film Transistor (TFT) displays with 16:9 format and a resolution of 800 X 480 pixels.

The color depth is 3 X 6 bits. The rear displays can display a maximum of 262.144 colors.

Wiring diagram for audio video controller control unit

PE82.60-P-2103-99SAB