Cirrus Logic CS4205 - Manual

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. 2005
(All Rights Reserved)
http://www.cirrus.com
CS4205
CrystalClear
®
Audio Codec ’97 for Portable Computing
Features
! Integrated Asynchronous I
2
S Input Port
(ZV Port)
! Integrated High-Performance Microphone
Pre-Amplifier
! Integrated Digital Effects Processing for Bass
and Treble Response
! Digital Docking Including an I
2
S Output, 3
Synchronous I
2
S Inputs
! Performance Oriented Digital Mixer
! SRS
©
3D Stereo Enhancement
! On-chip PLL for use with External Clock
Sources
! Dedicated Microphone Analog-to-Digital
Converter
! Sample Rate Converters
! S/PDIF Digital Audio Output
! AC ’97 2.1 Compliant
! PC Beep Bypass
! 20-bit Stereo Digital-to-Analog Converters
! 18-bit Stereo Analog-to-Digital Converters
! Three Analog Line-level Stereo Inputs for
LINE IN, VIDEO, and AUX
! High Quality Pseudo-Differential CD Input
! Extensive Power Management Support
! Meets or Exceeds the Microsoft
®
PC 99 and
PC 2001 Audio Performance Requirements
Description
The CS4205 is an AC ’97 2.1 compliant stereo audio co-
dec designed for PC multimedia systems. It uses
industry leading CrystalClear
® delta-sigma and mixed
signal technology. The CS405 is the first Cirrus AC ’97
audio codec to feature digital centric mixing and digital
effects. This advanced technology and these features
are designed to help enable the design of PC 99 and
PC 2001 compliant high-quality audio systems for desk-
top, portable, and entertainment PCs.
Coupling the CS4205 with a PCI audio accelerator or
core logic supporting the AC ’97 interface implements a
cost effective, superior quality audio solution. The
CS4205 surpasses PC 99, PC 2001, and AC ’97 2.1 au-
dio quality standards.
ORDERING INFO
CS4205-KQZ, Lead Free 48-pin TQFP 9x9x1.4 mm
SIGNAL
PROCESSING
ENGINE
LINE
CD
AUX
VIDEO
MIC1
MIC2
PHONE
PC_BEEP
LINE_OUT
MONO_OUT
ANALOG INPUT MUX
AND OUTPUT MIXER
AC-LINK AND AC '97
REGISTERS
PCM_DATA
GAIN / MUTE CONTROLS
INPUT
MUX
Σ
OUTPUT
MIXER
MIXER / MUX SELECTS
AC-
LINK
PWR
MGT TEST SYNC
BIT_CLK
SDATA_OUT
SDATA_IN
RESET#
PCM_DATA SRC
SRC
ID0#
ID1#
GPIO
S/PDIF
SERIAL DATA PORT
ZV PORT
GPIO0/LRCLK
GPIO1/SDOUT
EAPD/SCLK
SPDO/SDO2
18 bit
ADC
(2ch)
20 bit
DAC
(2ch)
Σ
INPUT
MIXER
AC
'97
REG
GPIO[2:4]/SDI[1:3]
ZSCLK,ZSDATA,ZLRCLK
18 bit
ADC
(1ch)
SRC MIC_PCM_DATA
JULY '05
DS489PP4