Information

Chapter 50
Integrated interchip sound (I2S)
50.1 Introduction
NOTE
For the chip-specific implementation details of this module's
instances see the chip configuration chapter.
This section discusses the architecture, the programming model, the operating modes, and
initialization of integrated interchip sound (I
2
S) module.
The I
2
S is a full-duplex, serial port that allows the chip to communicate with a variety of
serial devices. Such serial devices are:
• Standard codecs
• Digital signal processors (DSPs)
• Microprocessors
• Peripherals
• Audio codecs that implement the inter-IC sound bus (I
2
S) and the Intel
®
AC97
standards
The I
2
S module typically transfers samples in a periodic manner. The I
2
S consists of
independent transmitter and receiver sections with independent clock generation and
frame synchronization.
K20 Sub-Family Reference Manual, Rev. 6, Nov 2011
Freescale Semiconductor, Inc. 1485