lib_spdif: S/PDIF transmitter and receiver

Summary¶

S/PDIF (Sony/Philips Digital Interface) is a standard for transmitting digital audio signals over relatively short distances between devices. It was developed by Sony and Philips and is used to carry high-quality digital audio without the need for analog conversion, maintaining the integrity of the audio signal.

S/PDIF can carry two channels of uncompressed PCM (Pulse Code Modulation) audio or over Optical (TOSLINK) or Coaxial transmission mediums.

lib_spdif provides software defined S/PDIF implementation that allows transmission and reception of S/PDIF data via xcore ports.

Features¶

• Supports stereo S/PDIF receive for sample rates up to 192KHz

• Supports stereo S/PDIF transmit for sample rates up to 192KHz

• Fully compliant to the IEC60958 specification. Supports professional (i.e. AES3) and consumer variants

• Supports audio sample word lengths of 16, 20 or 24 bits

Known issues¶

• Transmitter has no way of setting user or validity bits (#55)

Development repo¶

• lib_spdif

Required tools¶

• XMOS XTC Tools: 15.3.1

Required libraries (dependencies)¶

• None

Related application notes¶

The following application notes use this library:

• AN02003: SPDIF/ADAT/I²S Receive to I²S Slave Bridge with ASRC

Support¶

This package is supported by XMOS Ltd. Issues can be raised against the software at: http://www.xmos.com/support