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Cirrus Logic CS4221 User Manual

Bit stereo audio codec with 3v interface, Preliminary product information, Features

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Preliminary Product Information

This document contains information for a new product.
Cirrus Logic reserves the right to modify this product without notice.

1

Copyright

Cirrus Logic, Inc. 1999

(All Rights Reserved)

P.O. Box 17847, Austin, Texas 78760
(512) 445 7222 FAX: (512) 445 7581
http://www.cirrus.com

24-Bit Stereo Audio Codec with 3V Interface

Features

l

100 dB Dynamic Range A/D Converters

l

100 dB Dynamic Range D/A Converters

l

105 dB DAC Signal-to-Noise Ratio (EIAJ)

l

Analog Volume Control (CS4221 only)

l

Differential Inputs / Outputs

l

On-chip Anti-aliasing and Output Smoothing
Filters

l

De-emphasis for 32, 44.1 and 48 kHz

l

Supports Master and Slave Modes

l

Single +5 V power supply

l

On-Chip Crystal Oscillator

l

3 - 5 V Digital Interface

Description

The CS4220/1 is a highly integrated, high performance,
24-bit, audio codec providing stereo analog-to-digital
and stereo digital-to-analog converters using delta-sig-
ma conversion techniques. The device operates from a
single +5 V power supply, and features low power con-
sumption. Selectable de-emphasis filter for 32, 44.1, and
48 kHz sample rates is also included.

The CS4221 also includes an analog volume control ca-
pable of 113.5 dB attenuation in 0.5 dB steps. The
analog volume control architecture preserves dynamic
range during attenuation. Volume control changes are
implemented using a “soft” ramping or zero crossing
technique.

Applications include digital effects processors, DAT, and
multitrack recorders.

ORDERING INFORMATION

CS4220-KS

-10 to +70 °C

28-pin SSOP

CS4221-KS

-10 to +70 °C

28-pin SSOP

CDB4220/1

Evaluation Board

I

SCL/CCLK SDA/CDIN AD0/CS

MCLK

VD

VA

RST

LRCK

SCLK

SDIN

SDOUT

DGND

AGND

AOUTL+
AOUTL-

AOUTR+
AOUTR-

AINL-
AINL+

AINR-
AINR+

Control Port

Se

ri

a

l

Au

di

o

D

at

a

In

ter

fa

c

e

Digit

a

l

F

ilt

er

s

w

ith

D

e

-E

m

phas

is

D

igit

a

l

F

ilt

ers

Left

DAC

Right

DAC

A

n

alo

g

Lo

w

P

as

s

an

d

O

utp

u

t

S

ta

g

e

Voltage

Reference

Left

ADC

Right

ADC

Volume

Control

(DIF1)

(DIF0)

(DEM0)

I C/SPI

(DEM1)

2

Clock OSC

( ) = CS4220

Volume

Control

V

L

XTI

XTO

*

= CS4221

*

*

APR ‘00

DS284PP3

CS4220
CS4221

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