Advance Product Information

This document contains information for a new product.

Cirrus Logic reserves the right to modify this product without notice.

1

Copyright

(All Rights Reserved)

P.O. Box 17847, Austin, Texas 78760

(512) 445 7222 FAX: (512) 445 7581

http://www.cirrus.com

CS4811

Fixed Function Multi-Effects Audio Processor

Features

reverb/effects applications

– Proprietary 24-bit Audio Processing Engine

– On-chip RAM (No external RAM required)

– On-chip 24-bit

∆Σ ADC with 100 dB Dyn. Range

– On-chip 24-bit

∆Σ DAC with 100 dB Dyn. Range

– Automatically boots firmware from external

serial EEPROM

Effects applications

Description

The CS4811 is a complete audio effects processing

system on a chip. This device integrates a proprietary 24-

bit audio processing

engine, large

on-chip

RAM

memories, and a high performance 24-bit audio codec. A

serial control port allows the device to boot firmware from

features such as single +5 V operation simplify system

design.

Firmware for the CS4811 is provided by Cirrus Logic.

There are two different firmware codes available; one for

guitar effects and one for audio mixers. The guitar effects

firmware provides a host of electric guitar effects includ-

ing spring reverb, delay, chorus, flange and tremolo.

The mixer effects firmware provides a suite of effects

such as digital reverb, delay and chorus which are suit-

able for use in audio mixers, karaoke and acoustic

instrument

amplifiers.

The

CDB4811GTR

and

CDB4811MXR evaluation boards allow easy evaluation

of the CS4811 device and the associated firmware.

ORDERING INFO

CS4811-KM

-10 to +70°C

100-pin MQFP

CDB4811GTR-01

Guitar Effects Evaluation Board

CDB4811MXR-01

Mixer Effects Evaluation Board

I

CMOUT

CMFILT+

CMFILT-

AIN+

AIN-

XTO

XTI

CLOCK

MANAGER

AOUT+

24-BIT AUDIO

VOLTAGE

REFERENCE

PIO3

PIO2

PIO1

PIO0

DIGITAL FILTER

DAC

ADC

SCL/CCLK

SDA/CDOUT

AD1/CDIN

AD0/CS

RST

OVL

AOUT-

PROCESSING

ENGINE

RAM

SEP ‘00

DS486PP2