CS48DV2B Просмотр технического описания (PDF) - Cirrus Logic

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CS48DV2B

32-bit Audio DSP

Cirrus Logic 

CS48DV2B Data Sheet

32-bit Audio DSP for Dedicated Dolby Volume and Audistry by Dolby

1. Documentation Strategy

The CS48DV2B Data Sheet describes CS48DV2B multichannel audio processors. This document

should be used in conjunction with the following documents when evaluating or designing a system

around the CS48DV2B processors.

Table 1. CS48DV2B DSP Related Documentation

Document Name

Description

CS48DV2B Data Sheet

This document

CS485xx Family Hardware User’s Manual

AN298 - CS485xx Family Firmware User’s Manual

DSP Composer User’s Manual

AN298VPMA,Audistry® by Dolby®”

AN298PPMN, Dolby® Volume Firmware User’s

Includes detailed system design information including

Typical Connection Diagrams, Boot-Procedures, Pin

Descriptions, etc.

T Includes detailed firmware design information

including signal processing flow diagrams and control

F API information

Includes detailed configuration and usage

A information for the GUI development tool.

Describes API used to control the Audistry firmware

R module.

D Describes API used to control the Dolby Volume

Manual for the CS48DV2x Family

firmware module.

L I The scope of the CS48DV2B Data Sheet is primarily the hardware specifications of the CS48DV2B

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

IA H The intended audience for the CS48DV2B Data Sheet is the system PCB designer, MCU

programmer, and the quality control engineer.

T P 2. Overview

N L The CS48DV2B DSP is designed to provide high-performance post-processing and mixing of digital

E E audio. The dual clock domain provided on the PCM inputs allows for the mixing of audio streams with

different sampling frequencies. The low-power standby preserves battery life for applications which

ID D are always on, but not necessarily processing audio, such as automotive audio systems.

The CS48DV2B supports dual input clock domains and dual audio processing paths. The

CS48DV2B is available in a 48-pin QFP package. Please refer to Table 2 on page 7 for the input,

F output, firmware features of each device.

2.1 Licensing

N Licenses are required for all of the 3rd party audio processing algorithms listed in Section 3. Please

CO contact your local Cirrus Logic Sales representative for more information.

DS875F2

Copyright 2009 Cirrus Logic

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