This document describes how to interface the ADSP-21161 to the AD1836 for use in professional, consumer, or automotive audio systems. Using the AD1836 gives the DSP audio system designer more flexibility for capture and playback of "professional-quality" 24-bit audio by providing the capability of processing multiple high-fidelity digital audio signals simultaneously. The AD1836 Multichannel 24-bit 96kHz Codec is a high-performance, single-chip 5 Volt stereo Codec system providing three stereo DACs and two stereo ADC’s using patented Sigma-delta conversion techniques. The ADCs and DACs are capable of maintaining 105 dB SNR and Dynamic Range. With extended serial port TDM and auxiliary I/O features, the AD1836 can also interfaced to additional external audio I2S devices, providing a "backdoor" path to the TDM bus for 3 external I2S devices, to allow 8-channel I/O. The ability to utilize 8 input/output channels of audio enables the use of the AD1836 in a wide variety of professional and consumer audio applications.