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STMicroelectronics AEK-CON-C1D9031 Connector Board is a connector board dedicated to bridging the AEK-AUDD903V1 board hosting an FDA903D automotive digital class D power amplifier and AEK-MCU-C1MLIT1 board hosting an SPC582B Chorus family automotive MCU with 1MB flash. The STM AEK-CON-C1D9031 Connector Board includes two main female strip connectors. One 19×2 is used for the AEK-MCU-C1MLIT1, while the 20×2 is used for the AEK-AUD-D903V1. An additional 15×2 male strip J2 is used to connect the AEK-MCU-C1MLIT1 and AEKAUD-D903V1. It is mandatory to fill the connector with all jumpers, except for the 19-20 (I2S Test) position.
The Electric Vehicle Warning Sounds (AVAS) system has become a growing application for automotive audio. The AVAS system is required by new vehicles to alert pedestrians of the presence of electric-powered vehicles generating much less noise. Warning sounds may be driver triggered (like a horn) or automatic mimicking engine sounds. The speed slider can be applied to modify the played sound to simulate a change of the engine rpm.
In 2021 according to government regulations, the vehicle must make a continuous noise level of at least 56dBA (within 2 meters) if the car is going 20km/h (12mph) or slower and a maximum of 75dBA. The combination of AEKAUD-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.
