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Cirrus Logic
Cirrus Logic

CS42426 Datasheet Preview

CS42426 Datasheet

Surround-sound Codecs

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CS42426 pdf
CS42426
114 dB, 192 kHz 6-Ch Codec with PLL
Features
! Six 24-bit D/A, two 24-bit A/D Converters
! 114 dB DAC / 114 dB ADC Dynamic Range
! -100 dB THD+N
! System Sampling Rates up to 192 kHz
! Integrated Low-Jitter PLL for Increased System
Jitter Tolerance
! PLL Clock or System Clock Selection
! 7 Configurable General-Purpose Outputs
! ADC High-Pass Filter for DC Offset Calibration
! Expandable ADC Channels and One-Line
Mode Support
! Digital Output Volume Control with Soft Ramp
! Digital +/-15 dB Input Gain Adjust for ADC
! Differential Analog Architecture
!www.DataSheet4U.com Supports Logic Levels between 1.8 V and 5 V
General Description
The CS42426 codec provides two analog-to-digital and
six digital-to-analog delta-sigma converters, as well as
an integrated PLL.
The CS42426 integrated PLL provides a low-jitter sys-
tem clock. The internal stereo ADC is capable of
independent channel gain control for single-ended or
differential analog inputs. All six channels of DAC pro-
vide digital volume control and differential analog
outputs. The general-purpose outputs may be driven
high or low, or mapped to a variety of DAC mute con-
trols or ADC overflow indicators.
The CS42426 is ideal for audio systems requiring wide
dynamic range, negligible distortion and low noise, such
as A/V receivers, DVD receivers, digital speaker and
automotive audio systems.
The CS42426 is available in a 64-pin LQFP package in
both Commercial (-10° to +70° C) and Automotive
(-40° to +85° C) grades. The CDB42428 Customer
Demonstration board is also available for device evalu-
ation. Refer to “Ordering Information” on page 71.
GPO1
GPO2
GPO3
GPO4
GPO5
GPO6
GPO7
MUTEC
VA AGND
GPO
AINL+
AINL-
AINR+
AINR-
AOUTA1+
AOUTA1-
AOUTB1+
AOUTB1-
AOUTA2+
AOUTA2-
AOUTB2+
AOUTB2-
AOUTA3+
AOUTA3-
AOUTB3+
AOUTB3-
ADC#1
ADC#2
http://www.cirrus.com
REFGND VQ FILT+ OMCK
RMCK LPFLT VLC DGND VD
Mute
Internal Voltage
Reference
Mult/Div
PLL
Control
Port
Digital Filter
Digital Filter
DAC#1
DAC#2
DAC#3
DAC#4
DAC#5
DAC#6
Gain & Clip
Gain & Clip
ADC
Serial
Audio
Port
INT
RST
AD0/CS
AD1/CDIN
SDA/CDOUT
SCL/CCLK
ADCIN1
ADCIN2
ADC_SDOUT
ADC_LRCK
ADC_SCLK
VLS
DAC_LRCK
DAC_SCLK
DAC_SDIN1
DAC_SDIN2
DAC_SDIN3
Copyright © Cirrus Logic, Inc. 2005
(All Rights Reserved)
NOVEMBER '05
DS604F1



Cirrus Logic
Cirrus Logic

CS42426 Datasheet Preview

CS42426 Datasheet

Surround-sound Codecs

No Preview Available !

CS42426 pdf
CS42426
TABLE OF CONTENTS
www.DataSheet4U.com
1. CHARACTERISTICS AND SPECIFICATIONS ...................................................................................... 6
SPECIFIED OPERATING CONDITIONS ............................................................................................... 6
ABSOLUTE MAXIMUM RATINGS ......................................................................................................... 6
ANALOG INPUT CHARACTERISTICS .................................................................................................. 7
A/D DIGITAL FILTER CHARACTERISTICS .......................................................................................... 8
ANALOG OUTPUT CHARACTERISTICS .............................................................................................. 9
D/A DIGITAL FILTER CHARACTERISTICS ........................................................................................ 10
SWITCHING CHARACTERISTICS ...................................................................................................... 11
SWITCHING CHARACTERISTICS - CONTROL PORT - I²C FORMAT .............................................. 12
SWITCHING CHARACTERISTICS - CONTROL PORT - SPIFORMAT .......................................... 13
DC ELECTRICAL CHARACTERISTICS .............................................................................................. 14
DIGITAL INTERFACE CHARACTERISTICS ....................................................................................... 15
2. PIN DESCRIPTIONS ............................................................................................................................ 16
3. TYPICAL CONNECTION DIAGRAMS .............................................................................................. 18
4. APPLICATIONS ................................................................................................................................... 20
4.1 Overview ......................................................................................................................................... 20
4.2 Analog Inputs .................................................................................................................................. 20
4.2.1 Line-Level Inputs ................................................................................................................... 20
4.2.2 High-Pass Filter and DC Offset Calibration ........................................................................... 21
4.3 Analog Outputs ............................................................................................................................... 21
4.3.1 Line-Level Outputs and Filtering ........................................................................................... 21
4.3.2 Interpolation Filter .................................................................................................................. 21
4.3.3 Digital Volume and Mute Control ........................................................................................... 22
4.3.4 ATAPI Specification ............................................................................................................... 22
4.4 Clock Generation ............................................................................................................................ 23
4.4.1 PLL and Jitter Attenuation ..................................................................................................... 23
4.4.2 OMCK System Clock Mode ................................................................................................... 24
4.4.3 Master Mode ......................................................................................................................... 24
4.4.4 Slave Mode ........................................................................................................................... 24
4.5 Digital Interfaces ............................................................................................................................. 25
4.5.1 Serial Audio Interface Signals ............................................................................................... 25
4.5.2 Serial Audio Interface Formats .............................................................................................. 27
4.5.3 ADCIN1/ADCIN2 Serial Data Format .................................................................................... 30
4.5.4 One-Line Mode (OLM) Configurations .................................................................................. 31
4.5.4.1 OLM Config #1 ........................................................................................................... 31
4.5.4.2 OLM Config #2 ........................................................................................................... 32
4.5.4.3 OLM Config #3 ........................................................................................................... 33
4.5.4.4 OLM Config #4 ........................................................................................................... 34
4.6 Control Port Description and Timing ............................................................................................... 35
4.6.1 SPI Mode ............................................................................................................................... 35
4.6.2 I²C Mode ................................................................................................................................ 36
4.7 Interrupts ........................................................................................................................................ 37
4.8 Reset and Power-Up ...................................................................................................................... 37
4.9 Power Supply, Grounding, and PCB Layout .................................................................................. 38
5. REGISTER QUICK REFERENCE ........................................................................................................ 39
6. REGISTER DESCRIPTION .................................................................................................................. 42
6.1 Memory Address Pointer (MAP) ..................................................................................................... 42
6.2 Chip I.D. and Revision Register (address 01h) (Read Only) .......................................................... 42
6.3 Power Control (address 02h) .......................................................................................................... 43
6.4 Functional Mode (address 03h) ...................................................................................................... 43
6.5 Interface Formats (address 04h) .................................................................................................... 45
6.6 Misc Control (address 05h) ............................................................................................................ 46
2 DS604F1


Part Number CS42426
Description Surround-sound Codecs
Maker Cirrus Logic
Total Page 30 Pages
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