Audio: Difference between revisions
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=== Jack === | === Jack === | ||
* 3.5mm headset TRRS (stereo audio and microphone) connector with automatic switch to go from [https://en.wikipedia.org/wiki/OMTP OMTP] to [https://en.wikipedia.org/wiki/CTIA_%E2%80%93_The_Wireless_Association CTIA] as seen [https://en.wikipedia.org/wiki/Phone_connector_%28audio%29#TRRS_standards here] | * 3.5mm headset TRRS (stereo audio and microphone) connector with automatic switch to go from [https://en.wikipedia.org/wiki/OMTP OMTP] to [https://en.wikipedia.org/wiki/CTIA_%E2%80%93_The_Wireless_Association CTIA] as seen [https://en.wikipedia.org/wiki/Phone_connector_%28audio%29#TRRS_standards here] | ||
Hardware: | |||
* [https://www.mouser.co.uk/ProductDetail/Texas-Instruments/TS3A227ERVAR?qs=%2Fha2pyFaduj3Cknap0145MPlxdRx5A2CetC%252Bo0d9of68d%2FCRevIM5w%3D%3D TS3A227ERVAR] - Autonomous Audio Accessory Detection and Configuration Switch | |||
** Detects 3-pole or 4-pole audio accessories (headphone / microphone) and configures internal switches to route the signals accordingly. | |||
* [https://www.mouser.co.uk/ProductDetail/ON-Semiconductor-Fairchild/FDV301N?qs=%2Fha2pyFadujAYpqpxz9xOxyu2NXFF4PQT%2FJhMIZ7j6w%3D FDV301N] - N-channel MOSFET used to generate "PLUGDET" signal when headphone jack is inserted. | |||
* [https://www.mouser.co.uk/ProductDetail/CUI-Devices/SJ-43516-SMT-TR?qs=WyjlAZoYn53r%252BAeL8NnrFw%3D%3D CUI SJ-43516-SMT-TR] - 4-contact, 3.5mm audio jack with tip and ring switches | |||
=== Volume Wheel === | === Volume Wheel === | ||
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=== Speakers === | === Speakers === | ||
* Stereo speakers in base with tuned cavity behind them as per manufacturers' recommendations.</onlyinclude> | * Stereo speakers in base with tuned cavity behind them as per manufacturers' recommendations.</onlyinclude> | ||
Hardware: | |||
* Seltech GR1813L025UN8 (or compatible) | |||
Latest revision as of 21:16, 1 April 2021
ADC/DAC
- TWL6040 integrated 4-channel DAC, 2-channel ADC, headphone and speaker amp, microphone preamp, and vibration driver using dedicated McPDM interface for communication with the OMAP5
Jack
- 3.5mm headset TRRS (stereo audio and microphone) connector with automatic switch to go from OMTP to CTIA as seen here
Hardware:
- TS3A227ERVAR - Autonomous Audio Accessory Detection and Configuration Switch
- Detects 3-pole or 4-pole audio accessories (headphone / microphone) and configures internal switches to route the signals accordingly.
- FDV301N - N-channel MOSFET used to generate "PLUGDET" signal when headphone jack is inserted.
- CUI SJ-43516-SMT-TR - 4-contact, 3.5mm audio jack with tip and ring switches
Volume Wheel
- Potentiometer to GPIO input in SoC, 10-Bit Resolution (allows software override of volume control)
Microphone
- Microphone located at the left edge between keyboard and D-pad.
Speakers
- Stereo speakers in base with tuned cavity behind them as per manufacturers' recommendations.
Hardware:
- Seltech GR1813L025UN8 (or compatible)