View cs8401 datasheet:

CS8401A CS8402A Digital Audio Interface Transmitter Features Description The CS8401/2A are monolithic CMOS devices which en- Monolithic Digital Audio Interface Transmitter code and transmit audio data according to the AES/EBU, Supports: AES/EBU, IEC958, S/PDIF, & IEC958, S/PDIF, & EIAJ CP-340 interface standards. EIAJ CP-340 Professional and Consumer The CS8401/2A accept audio and digital data, which is Formats then multiplexed, encoded and driven onto a cable. The Host Mode and Stand Alone Modes audio serial port is double buffered and capable of sup- porting a wide variety of formats. Generates CRC Codes and Parity Bits On-Chip RS422 Line Driver The CS8401A has a configurable internal buffer memo- ry, loaded via a parallel port, which may be used to buffer Co