CS4205_05 Datasheet, PDF (2/81 Pages) Cirrus Logic – CrystalClear® Audio Codec ’97 for Portable Computing

CS4205
TABLE OF CONTENTS
1. CHARACTERISTICS AND SPECIFICATIONS ........................................................................ 6
ANALOG CHARACTERISTICS ................................................................................................ 6
ABSOLUTE MAXIMUM RATINGS ........................................................................................... 7
RECOMMENDED OPERATING CONDITIONS ....................................................................... 7
AC ’97 SERIAL PORT TIMING................................................................................................. 9
2. GENERAL DESCRIPTION ..................................................................................................... 12
2.1 AC-Link ............................................................................................................................ 12
2.2 Control Registers ............................................................................................................. 13
2.3 Sample Rate Converters .................................................................................................. 13
2.4 Mixers .............................................................................................................................. 13
2.5 Input Mux ......................................................................................................................... 13
2.6 Volume Control ................................................................................................................ 13
2.7 Dedicated Mic Record Path ............................................................................................. 13
3. DIGITAL SIGNAL PATHS ...................................................................................................... 15
3.1 Analog Centric Mode ....................................................................................................... 15
3.2 Digital Centric Mode ......................................................................................................... 16
3.3 Host Processing Mode ..................................................................................................... 16
3.4 Multi-Channel Mode ......................................................................................................... 16
4. AC-LINK FRAME DEFINITION .............................................................................................. 18
4.1 AC-Link Serial Data Output Frame .................................................................................. 19
4.1.1 Serial Data Output Slot Tags (Slot 0)............................................................................. 19
4.1.2 Command Address Port (Slot 1) .................................................................................... 19
4.1.3 Command Data Port (Slot 2).......................................................................................... 20
4.1.4 PCM Playback Data (Slots 3-11) ................................................................................... 20
4.1.5 GPIO Pin Control (Slot12).............................................................................................. 20
4.2 AC-Link Serial Data Input Frame ..................................................................................... 21
4.2.1 Serial Data Input Slot Tag Bits (Slot 0) ........................................................................ 21
4.2.2 Status Address Port (Slot 1) .......................................................................................... 21
4.2.3 Status Data Port (Slot 2) ................................................................................................ 22
4.2.4 PCM Capture Data (Slot 3-8,11).................................................................................... 22
Contacting Cirrus Logic Support
For a complete listing of Direct Sales, Distributor, and Sales Representative contacts, visit the Cirrus Logic web site at:
http://www.cirrus.com/corporate/contacts/sales.cfm
IMPORTANT NOTICE
"Preliminary" product information describes products that are in production, but for which full characterization data is not yet available. Cirrus Logic, Inc. and its
subsidiaries ("Cirrus") believe that the information contained in this document is accurate and reliable. However, the information is subject to change without
notice and is provided "AS IS" without warranty of any kind (express or implied). Customers are advised to obtain the latest version of relevant information to
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in and gives consent for copies to be made of the information only for use within your organization with respect to Cirrus integrated circuits or other products of
Cirrus. This consent does not extend to other copying such as copying for general distribution, advertising or promotional purposes, or for creating any work for
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CERTAIN APPLICATIONS USING SEMICONDUCTOR PRODUCTS MAY INVOLVE POTENTIAL RISKS OF DEATH, PERSONAL INJURY, OR SEVERE
PROPERTY OR ENVIRONMENTAL DAMAGE (“CRITICAL APPLICATIONS”). CIRRUS PRODUCTS ARE NOT DESIGNED, AUTHORIZED OR WARRANTED
FOR USE IN AIRCRAFT SYSTEMS, MILITARY APPLICATIONS, PRODUCTS SURGICALLY IMPLANTED INTO THE BODY, AUTOMOTIVE SAFETY OR SE-
CURITY DEVICES, LIFE SUPPORT PRODUCTS OR OTHER CRITICAL APPLICATIONS. INCLUSION OF CIRRUS PRODUCTS IN SUCH APPLICATIONS
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PRODUCT THAT IS USED IN SUCH A MANNER. IF THE CUSTOMER OR CUSTOMER’S CUSTOMER USES OR PERMITS THE USE OF CIRRUS PROD-
UCTS IN CRITICAL APPLICATIONS, CUSTOMER AGREES, BY SUCH USE, TO FULLY INDEMNIFY CIRRUS, ITS OFFICERS, DIRECTORS, EMPLOYEES,
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ARISE IN CONNECTION WITH THESE USES.
Cirrus Logic, Cirrus, and the Cirrus Logic logo designs are trademarks of Cirrus Logic, Inc. All other brand and product names in this document may be trade-
marks or service marks of their respective owners.
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