Samsung S5PC100, User Manual

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S5PC100 USER’S MANUAL (REV1.0) I2S CONTROLLER(2CH)
10.3-1
10.3
I2S CONTROLLER(2CH)
1 OVERVIEW
Inter-IC Sound (I2S) is one of the popular digital audio interfaces. The bus handles audio data, while the other
signals, such as sub-coding and control, is transferred separately. It is possible to transmit data between two I2S
bus. To minimize the number of pins required and to keep wiring simple, basically, a 3-line serial bus is used. It
consists of a line for two time-multiplexed data channels, a word select line and a clock line.
I2S interface transmits or receives sound data from external stereo audio codec. To transmit or receive data, two
32x16 First-In-First-Out (FIFO) data structures are included and DMA transfer mode to transmit or receive
samples is supported. I2S-specific clock is supplied from internal system clock controller through I2S clock divider
or direct clock source.
2 FEATURE
•
Supports 2-ch I2S-bus (I2S1, I2S2) for audio interface with DMA-based operation
•
Supports Serial, 8/ 16/ 24-bit per channel data transfers
•
Supports I2S, MSB-justified and LSB-justified data format