HD Audio Codec with 2W Class-D, Capless HP, Retasking, and SPDIF Out

Overview
Conexant's CX20672 is a low-power, 102 dB SNR HD Audio codec with integrated 2-WRMS stereo Class-D using Spread Spectrum dispersion technology to prevent EMI. Two independent pairs of DACs and three independent pairs of ADCs support multi-Streaming and Real Time Communications applications. The audio fidelity of the device exceeds Microsoft Premium Logo requirements.
A ProCoustic capless headphone driver delivers 31 mW per channel into 32 Ω loads and eliminates external DC blocking capacitors. Two retaskable ports are available allowing Microphone/Line in and Microphone/Line In/Line Out retasking. All output ports feature PopShield technology that eliminates pops and clicks.

Features
‹ 2 pairs of independent DACs and 3 pairs of independent ADCs
‹ Sampling rates include 16-bit, 44.1 kHz to 24-bit, 192 kHz for DACs, and from 16-bit, 44.1 kHz to 24-bit; 96 kHz
for ADCs.
‹ Integrated 2 WRMS (per channel) Class-D stereo speaker amplifier
‹ Capless headphone eliminates BOM
‹ Two retaskable ports
‹ Stereo Digital Microphone interface
‹ Integrated boost for all microphones
‹ One independent SPDIF output
‹ Integrated regulators maximize performance
‹ Record Security Control
‹ Integrated headphone limiter (GS Mark)
‹ D-Flex Power Management
‹ Wake on PC BEEP
‹ PopShield eliminates pops and clicks
‹ Fidelity exceeds Microsoft WHCK requirements
‹ Jack sense detects up to 4 jacks
‹ Digital Mixer
‹ Compliant with all Intel High Definition Audio Specifications
‹ Selectable 1.5V/3.3 V link signaling
‹ Available in 40-QFN package