The S3C44B0 is a Chinese data manual for a digital audio system, which introduces its overview, transmission mode, audio serial interface format, and other content. This product is suitable for the audio consumer market and can be used to realize the interface function of external audio digital signal codec circuit, supporting IIS bus data format and MSB-justified data format.
The S3C44B0 IIS (Inter‑IC Sound) interface provides 8‑ or 16‑bit stereo audio data transfer. It supports both IIS and MSB‑justified data formats and offers normal and DMA transfer modes.
The document details register settings, clock and sample‑rate options, FIFO depth, and DMA control for both transmit and receive paths, enabling designers to configure the interface for various audio applications. This manual is written in Chinese.
| Supported data formats | IIS and MSB‑justified |
|---|---|
| FIFO depth | 32 bits (2 × 16) |
It supports both the standard IIS format and the MSB‑justified format.
The interface can operate in normal (non‑DMA) mode or in DMA mode.
Enable the DMA control bits in the IIS control registers, which then manage FIFO transfers automatically.