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Audio function

AM/FM radio 

  1. When the CMU receives the operation signal/detects the switch operation, it sends (1) the control signal to the RT.
  2. When the RT receives the control signal, it switches (2) the tuner inside the RT to radio mode and initiates reception of radio broadcasts.
  3. The RT detects the radio broadcast selected by the user using the tuner in the RT based on the electrical signal received (3) from the center roof antenna. The audio signal of the detected radio broadcast is sent (3) to the speakers. In addition, the frequency of the detected radio broadcast is sent to the CMU.
  4. The CMU converts the radio broadcast received from the RT to a GMSL signal and sends (4) the GMSL signal to the center display.
  5. The speakers output (5) the audio based on the audio signal sent from the RT. In addition, the center display indicates (5) radio information based on the GMSL signal.
G13180376Courtesy of MAZDA MOTORS CORP.

RDS (radio data system) 

  1. When the CMU receives the operation signal/detects the switch operation, it sends (1) the control signal to the RT.
  2. When the RT receives (2) the control signal, it starts RDS reception.
  3. The AM/FM antenna amplifier sends the received (3) RDS information (electrical signal) to the RT.
  4. The RT sends (4) text information to the CMU based on the received RDS information. In addition, it sends (4) the audio signal to the speakers.
  5. The CMU converts the received (5) text information to a GMSL signal and sends it to the center display.
  6. The center display (6) indicates the RDS information based on the received GMSL signal. In addition, the speakers output (6) the audio based on the received audio signal.
G13180377Courtesy of MAZDA MOTORS CORP.

DAB radio 

  1. When the CMU receives the operation signal/detects the switch operation, it sends (1) the control signal to the RT.
  2. When the RT receives the control signal, it switches (2) the tuner inside the RT to radio mode and initiates reception of radio broadcasts.
  3. The RT detects the radio broadcast from the received (3) electric signal from the DAB antenna amplifier, at the tuner in the RT. The audio signal of the detected radio broadcast is sent (3) to the speakers. In addition, the frequency of the detected radio broadcast is sent to the CMU.
  4. The CMU converts the radio broadcast received from the RT to a GMSL signal and sends (4) the GMSL signal to the center display.
  5. The speakers output (5) the audio based on the audio signal received from the RT. In addition, the center display indicates (5) music information (song name/artist name) based on the GMSL signal.
G13180378Courtesy of MAZDA MOTORS CORP.

USB audio/USB video 

  1. When the CMU receives the operation signal/detects the switch operation, it sends (1) the control signal to the audio amplifier.
  2. The USB port/SD card slot hub sends (2) the digital data (audio signal/music information such as album name or artist name) of the USB device/iPod connected to the USB port to the CMU.
  3. The CMU transmits (3) the received audio signal to the audio amplifier, converts music information to a GMSL signal, and sends (3) it to the center display.
  4. The center display indicates (4) the music information based on the GMSL signal received from the CMU. In addition, the audio amplifier sends (4) the received audio signal to the speakers and the speakers output (4) the audio based on the received audio signal.
G13180379Courtesy of MAZDA MOTORS CORP.

Bluetooth® audio function 

  1. When the CMU receives the operation signal/detects the switch operation, it sends (1) the control signal to the audio amplifier and a mobile device such as a Bluetooth®-enabled mobile phone or a Smartphone.
  2. When the mobile device such as a Smartphone or a Bluetooth®-enabled device receives the control signal, the digital data is sent (2) to the CMU.
  3. The CMU converts the video signal of the digital data to a GMSL signal and sends (3) it to the center display. In addition, it sends (3) the audio signal to the audio amplifier.
  4. The audio amplifier sends (4) the received audio signal to the speakers.
  5. In addition, the center display indicates (5) Bluetooth® audio information based on the GMSL signal. In addition, the speakers output (5) the audio based on the received audio signal.
G13180380Courtesy of MAZDA MOTORS CORP.

CD playback 

  1. When the CMU receives the operation signal/detects the switch operation, it sends (1) the control signal to the audio amplifier. In addition, the control signal is sent (1) to the CD player.
  2. When the CD player receives the control signal, it sends (2) music information such as the album name and artist name of the inserted CD to the CMU, and it sends (2) the audio signal to the audio amplifier.
  3. The CMU converts the received music information signal to a GMSL signal and sends (3) it to the center display. The audio amplifier sends (3) the received audio signal to the speakers.
  4. The center display indicates (4) the music information signal based on the GMSL signal. In addition, the speakers output (4) the audio based on the received audio signal.
G13180381Courtesy of MAZDA MOTORS CORP.

Gracenote updating 

  1. The USB port/SD card slot hub sends (1) the Gracenote update information on the USB device.
  2. The CMU verifies the Gracenote update information received from the USB port/SD card slot hub and performs (2 the update.
G13180382Courtesy of MAZDA MOTORS CORP.
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