MULTI AV SYSTEM : System Description

Multi AV system means that the following systems are integrated.

COMMUNICATION SIGNAL

• AV control unit function by transmitting/receiving data one by one with each unit (slave unit) that configures them completely as a master unit by connecting between units that configure MULTI AV system with two AV communication lines (H, L).
• Two AV communication lines (H, L) adopt a twisted pair line that is resistant to noise.
• AV control unit is connected by CAN communication, and it receives data signal from ECM and combination meter, and computes and displays fuel economy information value with the obtained information. Transmitting/receiving of data signal is performed by BCM. Also, it transmits the required signal of vehicle setting and receives the response signal.
• AV control unit is connected with display unit and serial communication, and it transmits the required signal of display and display control and receives the response signal from display unit.

AUDIO FUNCTION

The audio system is equipped with the following functions. Each function is operated with multifunction switch, preset switch, steering switch. Operation status of audio is indicated at display.

Operating Signal

Audio system operation can be performed with multifunction switch, preset switch or steering switch.

• Operating signal is transmitted to AV control unit with AV communication when it is operated by multifunction switch or preset switch. The disk ejection operating signal is performed by hardwire.
• Operating signal is transmitted to AV control unit with steering switch signal when it is operated by steering switch.

Screen Display

• Switching of display is performed with serial communication between display unit and AV control unit.
• The image signal to display operating condition is performed with RGB image signal, RGB area signal and RGB image synchronizing signal.

AM/FM Radio Mode

• AM/FM radio tuner is built into AV control unit.
• AM/FM radio wave is received by rod antenna, next it is amplified by antenna amp., and finally it is input to AV control unit.
• AV control unit outputs audio signal to BOSE amp. The signal is also outputted from BOSE amp. to each speaker.

Satellite Radio Mode

• Satellite radio tuner is controlled by communication signal and request signal with AV control unit.
• Sound signal (satellite radio) is received by satellite radio antenna (antenna base) and transmitted to AV control unit via satellite radio tuner.
• AV control unit outputs audio signal (satellite radio) to BOSE amp. The signal is also outputted from BOSE amp. to each speaker.

CD Mode

• CD function is built into AV control unit.
• AV control unit outputs audio signal to BOSE amp. The signal is also outputted from BOSE amp. to each speaker when CD is inserted to AV control unit.

Music Box Mode

• Music CD data is stored on flash memory that is built into AV control unit, and it can be played.
• AV control unit outputs music (sound signal) that is stored on flash memory to BOSE amp. The signal is also outputted from BOSE amp. to each speaker.

USB Connection Function

• Connecting iPod® or USB memory allows the driver to play iPod® music files or USB memory-stored music files.
• Sound signals of music files stored in iPod® or USB memory is transmitted from the USB connector to the AV control unit.
• AV control unit outputs sound signal to BOSE amp. The signal is also outputted from BOSE amp. to each speaker.
• iPod® is recharged when connected to USB connector.
• Only files that meet the following conditions will be played.

Sound Equalizer Automatic Switching Function

This helps provide a more consistent audio environment, even when the convertible top is down or windows are lowered. Based on psychoacoustic technology, this exclusive Bose innovation enhances the width, depth and spatial clarity of the soundstage and provides improved spectral balance.

HANDS-FREE PHONE SYSTEM

• TEL adapter unit is controlled with AV communication from AV control unit.
• The connection between cellular phone and TEL adapter unit is performed with Bluetooth™ communication.
• The voice guidance signal is input from the TEL adapter unit to the AV control unit, and output to the front speaker via BOSE amp. when operating the cellular phone.
• System operation is available only when the retractable soft top is closed.
• TEL adapter unit has the on board self-diagnosis function. Refer to "ON BOARD DIAGNOSIS FUNCTION ".

When A Call Is Originated

• Spoken voice sound output from the microphone (microphone signal) is input to TEL adapter unit.
• TEL adapter unit outputs to cellular phone with Bluetooth™ communication as a TEL voice signal.
• Voice sound is then heard at the other party.

When Receiving A Call

• Voice sound is input to own cellular phone from the other party.
• TEL voice signal is input to TEL adapter unit by establishing Bluetooth™ communication from cellular phone, and the signal is output to front speaker via BOSE amp.

AUXILIARY INPUT FUNCTION

• Image and sound can be output from an external device by connecting a device with auxiliary input jacks.
• AUX image signals are transmitted to the display unit via the AV control unit.
• AUX sound signals are transmitted to BOSE amp. via AV control unit. The signal is also outputted from BOSE amp. to each speaker.

REAR VIEW MONITOR FUNCTION

Camera Image Operation Principle

• The AV control unit supplies power to the rear view camera when receiving a reverse signal.
• The rear view camera transmits camera images to the AV control unit when power is supplied from the AV control unit.
• The AV control unit transmits a warning message, fixed guide lines, and predictive course lines to the display unit by RGB image signals. Rear view monitor images are displayed by combining the RGB image signals and the camera image signals from the rear view camera.
• Predictive course lines are controlled by a steering angle sensor signal received the AV control unit via CAN communication.

VEHICLE INFORMATION FUNCTION

• Status of audio, climate control system, fuel economy and maintenance are displayed.
• AV control unit displays the fuel consumption status while receiving data signal through CAN communication from ECM and combination meter.
• AV control unit is connected to BCM via CAN communication transmitting/receiving for the vehicle settings function.