Two-wire digital audio interface

摘要

A digital audio interface may include two signal inputs to transmit audio data. A first signal line may carry digital serial audio data. The second signal line may carry a word clock signal to differentiate the serial audio data transmitted over the first signal line. In the case of stereo audio data, the word clock signal may correspond to a left-right clock signal and may differentiate audio data intended for a right channel from that intended for a left channel. The audio data may also be differentiated differently depending on the configuration, such as in the case that the transmitted audio data include audio for more than two channels. The word clock signal may be scaled to regenerate a bit clock signal used to encode the serial audio data over the first signal line. The encoding bit clock signal need not be transmitted.

主权项

1. A two signal input digital audio interface comprising:
a first signal input to carry serial audio data; and a second signal input to carry a word clock signal to differentiate the serial audio data in a first signal line, wherein the word clock signal is scaled to generate an untransmitted clock signal to decode the serial audio data in the two signal input digital audio interface.