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Hello,
I'm using the TPS65987EVM with a smartphone A50 galaxie. The goal is that the A50 become a source to power up my electronic board the PCM2912A ( Audio over usb interface from TI) and is the host to control the PCM2912A.
And when I plugged ont the TPS65987EVM the 20V power supply on the barrel jack the A50 become a sink and start charging its battery. But it steal control the PCM2912A.
I managed the Power Delivery part I can charge the A50, and the A50 can provide power to the PCM2912A. But I did't get sound from PCM2912A. the A50 didn't recognize has an audio USB device !!!.
I test the PCM2912A alone with the A50 this work .
Do I need to configure some part in the register of the TPS65987 to allow the PCM2912A to be mounted has an audio device for the A50.
I enable "audio accessory support" but the TPS65987 reboot always ?
I attach my project file.Test Audio USB DRP mode.pjt
Best regards
David
Hello,
below the schematic. All the GND are connected together.
Best regards
