Cirrus Logic AN348 User Manual
An348, Introduction, Getting started
Copyright
Cirrus Logic, Inc. 2011
(All Rights Reserved)
http://www.cirrus.com
Application Note
GETTING STARTED WITH THE AUDIO DSP EVALUATION
KITS FROM CIRRUS LOGIC
1. INTRODUCTION
The following sections will provide step-by-step instructions to explain how to get started with the Evaluation Kits for Audio DSP
products from Cirrus Logic. This is a generic document as its principle applies to all current Audio DSP families from Cirrus Logic
— the CS48500, the CS470xx Audio SoCs, and the CS49531x / 4970xx.
An advanced audio processing design is created and will be used as an example to illustrate the practical work with the
DSP Composer™ tool and a CDB48560 evaluation board. The given example is more complex than the example projects
included in the evaluation board software package. It also shows how to use the pre-defined blocks and primitives when using
the DSP Composer GUI.
A Q&A section is included at the end of this document.
2. GETTING STARTED
2.1
Up-front information and preparation
Please prepare the following essential information about your target application before contacting Cirrus Logic:
• The basic technical design requirements including any 3rd party IP support such as the support of specific multichannel-
audio formats or standards.
• The general project schedule and anticipated volume information.
• Your contact details.
With these details on hand, your local Cirrus Logic Distribution partner or sales offices can easily identify the 'best fit' Audio DSP
for your application. Cirrus Logic offers a great variety of Audio DSP-products, which are widely compatible — whether your
design needs a cost-effective, entry-level audio DSP such as a CS48500-DSP or a high-performance multichannel audio decoder
such as the CS49700.
If applicable, Cirrus Logic needs to contact the relevant third party to get approval prior to providing samples or software.
Please contact your local Cirrus Logic sales representative or Distribution partner for details.
The evaluation board software is provided on the Cirrus Logic web
ease refer to the web site section
specific to the DSP of your choice and browse to the Resources section.
Within the software suite, you will only have access to modules and functions for which you have appropriate licences in place.
If you require access to disabled blocks, you will need to obtain the licences from the third-party licensor first before Cirrus Logic
is authorized to send you the specific code.
Cirrus Logic provides comprehensive technical documentation such as evaluation board manuals, data sheet specifications, or
application notes which will be installed during the evaluation board software setup. The default path for all documents is
C:\CirrusDSP\doc\. Note that application notes for the individual processing blocks such as for third-party, IP-based decoders are
provided with the individual setup files.
All Cirrus Logic DSPs are SRAM-based and can be upgraded in the field or during evaluation.
AN348
MAR ‘11
AN348REV2