Surround sound AD converter circuit b

Shown is the A/D converter circuit. The processed 6-channel audio signals (5.1 audio) are divided into 3 groups and passed through 3
A/D conversion integrated circuits respectively to convert the analog audio signals into digital audio signals. This Digital audio signals are called serial digital signals. Each
group is composed of three signals, transmitted simultaneously. Among them, Dout is the serial data signal, also called Date, BCK is the serial clock signal, and LRCK
is the left and right (LR) separated clock signal.
    Among the three A/D converters, the main channel (L, R) uses a 24-bit A/D converter, mainly to ensure the frequency bandwidth of the main channel,
low distortion, and large dynamic range. Surround sound (SL, SR) A/D converters and mid-channel and subwoofer A/ D converters all use 16-bit quantization
values.