Wcd9341 Datasheet [exclusive] File

For a full register-level programming guide or timing diagrams, refer to Qualcomm document 80-NL713-XX under NDA. This review is based on public revision 1.4 (2016-08-12) and community-validated measurements.

The input stage accommodates multiple microphone configurations:

Qualcomm designed the WCD9341 with granular power management capabilities. When listening to standard compressed audio (such as 16-bit/44.1 kHz streams), the chip scales its power usage appropriately to conserve battery. When high-resolution 24-bit files are detected, the chip engages its high-power, premium audio paths, ensuring the user only expends maximum battery when the highest quality audio is actively playing. 5. Form Factor and Packaging wcd9341 datasheet

Routing I2S_RX traces under VDD_CP capacitor causes 1 kHz idle tone due to charge pump ripple.

Ensure the Linux/Android ALSA (Advanced Linux Sound Architecture) kernel driver correctly uploads the initial firmware and configuration registers over the SLIMbus interface during boot. For a full register-level programming guide or timing

For open-source Linux implementation, foundational register definitions and initialization sequences can be found within the Linux Kernel source tree under the audio machine driver directory ( sound/soc/codecs/wcd934x.c ).

The codec’s audio performance is exceptional, with a and total harmonic distortion plus noise (THD+N) of −109 dB —figures that rival many dedicated high‑end audio DACs. Its signal‑to‑noise ratio (SNR) reaches 115 dB , guaranteeing an extremely black background free from hiss or interference. When listening to standard compressed audio (such as

Route analog microphone inputs and headphone output traces as differential pairs. Keep them well away from high-speed digital buses like UFS, LPDDR4, or RF transmit lines.