TWL6040 Low-Power Audio Codec Texas Instruments TWL6040 Low-Power Audio Codec is an audio coder/decoder (codec) with a high level of integration, providing analog audio codec functions for portable applications. The device contains multiple audio analog inputs and outputs, as well as microphone biases and accessory detection. The device is connected to the OMAP 4 host processor through a proprietary PDM interface for audio data communication enabling partitioning with optimized power consumption and performance. Multichannel audio data is multiplexed to a single wire for downlink (PDML) and uplink (PDMUL).