DS787PP9

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1 Documentation Strategy

1 Documentation Strategy

The CS470xx Data Sheet describes the CS47048, CS47028, and CS47024 audio processors. This document should be

used in conjunction with the following documents when evaluating or designing a system around the CS470xx processors.

Table 1-1. CS470xx Related Documentation

The scope of the CS470xx Data Sheet is primarily the hardware specifications of the CS470xx family of devices. This

includes hardware functionality, characteristic data, pinout, and packaging information.

The intended audience for the CS470xx Data Sheet is the system PCB designer, MCU programmer, and the quality control

engineer.

2 Overview

The CS470xx DSP is designed to provide high-performance post-processing and mixing of analog and digital audio. Dual

clock domains are supported when the DAI and SPDIF RX inputs are used together. Integrated sample rate converters

(SRCs) allow audio streams with different sample rates to be mixed. The low-power standby preserves battery life for

applications that are always on, but not necessarily processing audio, such as automotive audio systems.

The CS470xx uses voltage-out DACs and is capable of supporting dual input clock domains through the use of the internal

SRCs. The CS470xx is available in a 100-pin LQFP package. Refer to Table 3-1 and Table 3-2 for the input, output, and

firmware configurations for the CS470xx DSP.

2.1 Licensing

Licenses are required for any third-party audio processing algorithms provided for the CS470xx. Contact your local Cirrus

Logic Sales representative for more information.

Document Name

Description

CS470xx Data Sheet

This document

CS470xx Hardware User’s Manual Guide

Includes detailed system design information such as typical connection diagrams, boot-proce-

dures, and pin descriptions

AN333 - CS470xx Firmware User’s Manual Includes a list of firmware modules available on the CS470xx family platform and detailed firm-

ware design information including signal processing flow diagrams and control API information

DSP Composer User’s Manual

Includes detailed configuration and usage information for the GUI development tool

CDB470xx User’s Manual

Includes detailed instructions on the use of the CDB470xx development board