Introduction; References - Texas Instruments OMAP35 Series User Manual

5.1. Introduction

The TWL4030 audio module contains audio analog inputs and outputs. It is
connected to the main OMAP35x processor through the TDM/I2S interface
(audio interface) and used to transmit and receive audio data. The TWL4030
codec is connected via Multi-Channel Buffered Serial Port (McBSP) interface, a
communication peripheral, to the main processor.
McBSP provides a full-duplex direct serial interface between the device
(OMAP35x processor) and other devices in the system such as the TWL4030
codec. It provides a direct interface to industry standard codecs, analog
interface chips (AICs) and other serially connected A/D and D/A devices:
•
•
•
The TWL4030 audio module is controlled by internal registers that can be
accessed by the high speed I2C control interface.
This user manual defines and describes the usage of user level and platform
level interfaces of the ALSA SoC Audio driver.

5.1.1. References

1.
2.
3.
4.
5.
Version 02.01.01.08
Inter-IC Sound (I2S) compliant devices
Pulse Code Modulation (PCM) devices
Time Division Multiplexed (TDM) bus devices.
ALSA SoC Project Homepage
index.php/ASoC]
ALSA Project Homepage [http://www.alsa-project.org/main/index.php/
Main_Page]
ALSA User Space Library [http://www.alsa-project.org/alsa-doc/alsa-lib/]
Using ALSA Audio API [http://www.equalarea.com/paul/alsa-audio.html/]
Author: Paul Davis
TWL4030 OMAP Power Management and System Companion Device Silicon
Revision 2.1. (Author: Texas Instruments)
Literature Number: SWCU026D
Platform Support Products
[http://www.alsa-project.org/main/
Audio Driver
Introduction
39