CM6542 Datasheet | C-Media

DESCRIPTION The CM6542 is the new generation ultra-low-power USB audio single chip designed especially for mobile USB-C headset, audio adapter or dock applications. It features cap-less/anti-pop headphone driver, bo-jack swap & jack-detection, Google buttons detection, embedded oscillator, flash, tri-color LED PWM driver, Digital EQ, DC-DC converter, etc., which can fulfill cost-effective, low-power, and versatile USB Type-C Audio accessories in a concise design for Android smartphones, tablets, New i Pad Pro(2018), and PC. It also supports automatic power-down and active modes switch when the 3.5mm headset is unplugged or plugged-in to save the power consumption in USB-C audio adapter/dongle applications. Besides, it has Google headset 4-button in-line control detection and CTIA/OMTP typed headset/headphone auto switch. The integrated digital EQ and tri-color LED driver can bring more differentiation to the USB-C audio accessories. Up-to -96KHz/24bit codec support can facilitate Hi-Res Audio products. FEATURES - Supports plete power management with auto power-down mode (no 3.5mm headset plug-in) - Ultra-low-power consumption design with internal DC-DC converter (@USB5V) : 0A @ power-down; 12.7m A @standby; 19.1m A @active playback - Accepts USB 5V or 3.3V power supply - Embedded 8051 MCU with internal 512KB flash - Embedded oscillator for Crystal-less design - True Cap-less/zero-ground headphone driver with patent applied anti-pop technology - Supports OMTP and CTIA 4-ring bo jack auto switch and jack detection - Supports 4 in-line Google buttons headset detection - Built-in 5-band parametric Equalizer for both playback and recording - Integrated Tri-Color LED PWM driver - 2-ch DACs w/ 96d B SNR; 1-ch ADC 90d B SNR - Up to 96KHz/24bit Hi-Res playback or recording - Built-in S/PDIF transmitter - USB2.0 Full-Speed and USB Audio Device Class 1.0 - CM6542 Small QFN-48 package (5x5 mm) BLOCK DIAGRAM USB Interface Page 1 / 15 Control Bus -16 ~ 12d B(1d B/step) Gain 5-Band...