CS4294 Datasheet, PDF (2/42 Pages) Cirrus Logic – SoundFusion Audio/Docking Codec 97 (AMC 97)

CS4294
TABLE OF CONTENTS
1. CHARACTERISTICS AND SPECIFICATIONS ........................................................................ 5
AUDIO ANALOG CHARACTERISTICS.................................................................................... 5
ABSOLUTE MAXIMUM RATINGS ........................................................................................... 6
RECOMMENDED OPERATING CONDITIONS ....................................................................... 6
MIXER CHARACTERISTICS.................................................................................................... 6
DIGITAL CHARACTERISTICS ................................................................................................. 6
SERIAL PORT TIMING............................................................................................................. 7
2. GENERAL DESCRIPTION ..................................................................................................... 10
2.1 Overview .......................................................................................................................... 10
2.2 Modes of Operation ......................................................................................................... 10
2.2.1 Mode 0 ................................................................................................................ 10
2.2.2 Mode 1 ................................................................................................................ 10
3. DIGITAL SECTION ................................................................................................................. 10
3.1 AC-Link ............................................................................................................................ 10
3.2 Control registers ............................................................................................................... 11
4. ANALOG SECTION ................................................................................................................ 11
4.1 Audio Output Mixer .......................................................................................................... 12
4.2 Audio Input Mux ............................................................................................................... 12
4.3 Audio Input Mixer ............................................................................................................. 12
4.4 Audio Volume Control ...................................................................................................... 12
5. AC ‘97 ..................................................................................................................................... 12
5.1 AC ‘97 Frame Definition ................................................................................................... 12
5.2 AC-Link Serial Data Output Frame .................................................................................. 12
5.3 AC-Link Audio Output Frame ........................................................................................... 13
5.3.1 Serial Data Output Slot Tags (Slot 0)................................................................... 13
5.3.2 Register Address (Slot 1) ..................................................................................... 13
5.3.3 Register Write Data (Slot 2) ................................................................................. 14
5.3.4 Playback Data (Slots 3-11) .................................................................................. 14
5.3.5 GPIO Data (Slot12) .............................................................................................. 14
5.4 AC-Link Audio Input Frame .............................................................................................. 14
5.4.1 Serial Data Input Slot Tag Bits (Slot 0) ............................................................... 14
5.4.2 Read-Back Address Port (Slot 1) ......................................................................... 15
5.4.3 Read-Back Data Port (Slot 2)............................................................................... 15
5.4.4 PCM Capture Data (Slot 3-11) ............................................................................. 15
5.4.5 GPIO Pin Status (Slot 12) .................................................................................... 15
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/
CrystalClear is a trademark of Cirrus Logic, Inc.
SoundFusion is a registered trademark of Cirrus Logic, Inc.
Preliminary product information describes products which are in production, but for which full characterization data is not yet available. Advance prod-
uct information 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 kind (express or implied). No responsibility is assumed by Cirrus Logic, Inc. for the use of this information, nor for
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