CS4201 Datasheet, PDF (2/68 Pages) Cirrus Logic – CrystalClear Audio Codec 97 with headphone Amplifier

CS4201
TABLE OF CONTENTS
1. CHARACTERISTICS AND SPECIFICATIONS ..................................................................7
Analog Characteristics ........................................................................................................7
Absolute Maximum Ratings ................................................................................................8
Recommended Operating Conditions.................................................................................8
AC ’97 Serial Port Timing..................................................................................................10
2. GENERAL DESCRIPTION ...............................................................................................13
2.1 AC-Link ......................................................................................................................13
2.2 Control Registers .......................................................................................................14
2.3 Sample Rate Converters ...........................................................................................14
2.4 Mixers ........................................................................................................................14
2.5 Input Mux ...................................................................................................................14
2.6 Volume Control ..........................................................................................................14
3. AC-LINK FRAME DEFINITION ........................................................................................16
3.1 AC-Link Serial Data Output Frame ............................................................................17
3.1.1 Serial Data Output Slot Tags (Slot 0) ...........................................................17
3.1.2 Command Address Port (Slot 1) ..................................................................17
3.1.3 Command Data Port (Slot 2) ........................................................................18
3.1.4 PCM Playback Data (Slots 3-11) .................................................................18
3.1.5 GPIO Pin Control (Slot12) ............................................................................18
3.2 AC-Link Serial Data Input Frame ..............................................................................19
3.2.1 Serial Data Input Slot Tag Bits (Slot 0) ......................................................19
3.2.2 Status Address Port (Slot 1) .........................................................................19
3.2.3 Status Data Port (Slot 2) ..............................................................................20
3.2.4 PCM Capture Data (Slot 3-8) .......................................................................20
3.2.5 GPIO Pin Status (Slot 12) ...........................................................................20
3.3 AC-Link Protocol Violation - Loss of SYNC ...............................................................21
4. REGISTER INTERFACE .............................................................................................22
4.1 Reset Register (Index 00h) ......................................................................................23
4.2 Analog Mixer Output Volume Registers (Index 02h - 04h) ......................................23
4.3 Mono Volume Register (Index 06h) ..........................................................................24
4.4 PC_BEEP Volume Register (Index 0Ah) ..................................................................24
4.5 Phone Volume Register (Index 0Ch) ........................................................................24
4.6 Microphone Volume Register (Index 0Eh) ................................................................25
4.7 Analog Mixer Input Gain Registers (Index 10h - 18h) ...............................................26
4.8 Input Mux Select Register (Index 1Ah) .....................................................................27
Contacting Cirrus Logic Support
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Preliminary product information describes products which are in production, but for which full characterization data is not yet available. Advance product infor-
mation describes products which are in development and subject to development changes. Cirrus Logic, Inc. has made best efforts to ensure 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
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this document may be trademarks or service marks of their respective owners which may be registered in some jurisdictions. A list of Cirrus Logic, Inc. trade-
marks and service marks can be found at http://www.cirrus.com.
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DS483PP3