AEK-CON-C1D9031 STMicroelectronics

AEK-CON-C1D9031 Data brief Connector board for MCU and class D audio amplifier Features Connector board for MCU board AEK-MCU-C1MLIT1 Connector board for Class D audio amp AEK-AUD-D903V1 It hosts an L9616 CAN transceiver It hosts a level translator to adjust I2S test pin from audio board to a compatible level for MCU Separated board with two potentiometers with 5V compliant sliders included RoHS compliant Included in the AutoDevKit initiative Description The AEK-CON-C1D9031 is a connector board dedicated to bridge AEK-AUD- D903V1 board hosting FDA903D automotive digital class D power amplifier and AEK-MCU-C1MLIT1 board hosting a SPC582B Chorus family automotive MCU with 1MB flash. On the board there are two main female strip connectors: a 19x2 one is used for AEK-MCU-C1MLIT1 while the 20x2 is used for the AEK-AUD-D903V1. An additional 15x2 male strip J2 is used to connect the AEK-MCU-C1MLIT1 and AEK- AUD-D903V1. It is mandatory to fill the connector with all jumpers, except for the position 19-20 (I2S Test). A regulator and a level translator are employed to adjust level of a debug signal coming from the audio amp for current monitoring during play. This signal is called I2S test and it is digital and synchronized with the audio data sent through the I2S Product summary interface. Connector board for AEK-CON- To make the system a potential audio sub-module, a CAN transceiver has been MCU and class D C1D9031 audio amplifier added employing L9616. This allows to sent audio commands to the MCU through CAN interface. A 6-pin male connector is available on the board for this purpose. MCU discovery board for SPC5 Chorus 1M AEK-MCU- The last 4-pin plug of the board is dedicated to connect a separate board with two automotive C1MLIT1 potentiometers actuated with sliders. The values of the potentiometers are fed to the microcontroller MCU ADCs (analog-to-digital converters) compatible with 5V levels. One potentiometer could be employed to control the volume while the second one is used AutoDevKit library STSW- plugin for SPC5- to accelerate the sound played. AUTODEVKIT STUDIO Traditionally, the audio sub-module is used for typical automotive infotainment applications. Recently, the Electric Vehicle Warning Sounds (AVAS) system has become a new growing application for automotive audio. This system is required by new vehicles to alert pedestrians of the presence of electric powered vehicles that are generating much less noise. Warning sounds may be driver triggered (like a horn) or automatic mimicking engine sounds. The speed slider can be employed to modify the played sound to simulate a change of the engine rpm. From 2021 according to government regulations, the vehicle must make a continuous noise level of at least 56 dBA (within 2 meters) if the car is going 20 km/h (12 mph) or slower, and a maximum of 75 dBA. The combination of AEK- AUD-D903V1 with AEK-MCU-C1MLIT1 through AEK-CON-C1D9031 offers a viable low-cost solution for entry-level AVAS systems. The CAN interface allows remote control of several audio sub-modules that can be placed around the vehicle. DB4237 - Rev 1 - July 2020 www.st.com For further information contact your local STMicroelectronics sales office.AEK-CON-C1D9031 Block diagrams and schematic diagrams 1 Jumper configurations and schematic diagrams 1.1 Jumper configurations Figure 1. AEK-CON-C1D9031 configuration Note: It is mandatory to fill the connector with all jumpers, except for the position 19-20 (I2S Test) as showed in the Figure 1. AEK-CON-C1D9031 configuration. DB4237 - Rev 1 page 2/6