View cs8405a datasheet:

CS8405A 96 kHz Digital Audio Interface Transmitter Features General Description The CS8405A is a monolithic CMOS device which en- l +3 to +5V Digital Supply codes and transmits audio data according to the AES3, l Complete EIAJ CP1201, IEC-60958, AES3, IEC60958, S/PDIF, & EIAJ CP1201 interface standards. S/PDIF compatible transmitter The CS8405A accepts audio and digital data, which is l On-chip C and U bit buffer memory allows then multiplexed, encoded and driven onto a cable. block sized updates The audio data is input via a configurable, 3-wire input l Flexible 3-wire serial digital audio input port port. The channel status and user data are input via an l Up to 96 kHz frame rate SPI or I2C® microcontroller port, and may be assembled in block sized buffers. l Microco