Owner's manual

CS48AU2B Data Sheet
Dedicated 32-bit Audio DSP for Audyssey Laboratories Technology
DS876F3 Copyright 2009 Cirrus Logic 5
CONFIDENTIAL
CONFIDENTI
A
L
DRA
FT
DELP
HI
1. Documentation Strategy
The CS48AU2B Data Sheet describes the CS48AU2B audio processor. This document should be
used in conjunction with the following documents when evaluating or designing a system around the
CS48AU2B of processors.
The scope of the CS48AU2B Data Sheet is primarily the hardware specifications of the CS48AU2B
of devices. This includes hardware functionality, characteristic data, pinout, and packaging
information.
The intended audience for the CS48AU2B Data Sheet is the system PCB designer, MCU
programmer, and the quality control engineer.
2. Overview
The CS48AU2B DSP is designed to provide high-performance post-processing and mixing of digital
audio. The low-power standby preserves battery life for applications which are always on, but not
necessarily processing audio, such as automotive audio systems. The CS48AU2B is available in a
48-pin QFP package. Please refer to Table 2 on page 7 for the input, output and suggested
applications for this device.
2.1 Licensing
Licenses are required for any of the Audyssey Laboratories algorithms listed in Section 3. Please
contact Audyssey Laboratories at [e-mail]
for more information on licensing their
technology. Please send e-mail to [e-mail]
for more information on Audyssey
trademarks.
Table 1. CS48AU2B Related Documentation
Document Name Description
CS48AU2B Data Sheet This document
CS485xx Hardware User’s Manual
Includes detailed system design information including
Typical Connection Diagrams, Boot-Procedures, Pin
Descriptions, etc.
AN298 - CS485xx Firmware User’s Manual
Includes detailed firmware design information
including signal processing flow diagrams and control
API information for the operating system.
DSP Composer
TM
User’s Manual
Includes detailed configuration and usage
information for the GUI development tool.
AN298PPMQ, Audyssey Dynamic Volume
TM
Audyssey Dynamic EQ
TM
Firmware Module
Application Note
Contains description of API used to control Audyssey
Dynamic Volume and Audyssey Dynamic EQ
firmware.
AN298PPMR, Audyssey EQ
TM
Firmware Module
Application Note
Contains description of API used to control Audyssey
EQ firmware.
AN298PPMS, Audyssey BassXT
TM
Firmware
Module Application Note
Contains description of API used to control Audyssey
BassXT firmware.