Information

Chapter 46
Synchronous Audio Interface (SAI)
46.1 Introduction
NOTE
For the chip-specific implementation details of this module's
instances see the chip configuration chapter.
The I
2
S (or I2S) module provides a synchronous audio interface (SAI) that supports full-
duplex serial interfaces with frame synchronization such as I
2
S, AC97, and codec/DSP
interfaces.
46.1.1 Features
• Transmitter with independent bit clock and frame sync supporting 1 data channel
• Receiver with independent bit clock and frame sync supporting 1 data channel
• Maximum Frame Size of 16 words
• Word size of between 8-bits and 32-bits
• Word size configured separately for first word and remaining words in frame
• Asynchronous 4 × 32-bit FIFO for each transmit and receive channel
• Graceful restart after FIFO error
46.1.2 Block diagram
The following block diagram also shows the module clocks.
K20 Sub-Family Reference Manual, Rev. 2, Feb 2012
Freescale Semiconductor, Inc. 1145