CS4227
TABLE OF CONTENTS
1. CHARACTERISTICS AND SPECIFICATIONS ........................................................................ 4
ANALOG CHARACTERISTICS................................................................................................ 4
SWITCHING CHARACTERISTICS .......................................................................................... 6
SWITCHING CHARACTERISTICS - CONTROL PORT........................................................... 8
ABSOLUTE MAXIMUM RATINGS ......................................................................................... 10
RECOMMENDED OPERATING CONDITIONS ..................................................................... 10
DIGITAL CHARACTERISTICS............................................................................................... 10
2. FUNCTIONAL DESCRIPTION ............................................................................................... 12
2.1 Overview .......................................................................................................................... 12
2.2 Analog Inputs ................................................................................................................... 12
2.2.1 Line Level Inputs ................................................................................................. 12
2.2.2 Adjustable Input Gain .......................................................................................... 13
2.2.3 High Pass Filter ................................................................................................... 13
2.3 Analog Outputs ................................................................................................................ 13
2.3.1 Line Level Outputs .............................................................................................. 13
2.3.2 Output Level Attenuator ...................................................................................... 14
2.4 Clock Generation ............................................................................................................. 14
2.4.1 Clock Source ....................................................................................................... 14
2.4.2 Master Clock Output ........................................................................................... 14
2.4.3 Synchronization ................................................................................................... 14
2.5 Digital Interfaces .............................................................................................................. 15
2.5.1 Audio DSP Serial Interface Signals ..................................................................... 15
2.5.2 Audio DSP Serial Interface Formats ................................................................... 15
2.5.3 Auxiliary Audio Port Signals ................................................................................ 15
2.5.4 Auxiliary Audio Port Formats ............................................................................... 15
2.6 Control Port Signals ......................................................................................................... 17
2.6.1 SPI Mode ............................................................................................................ 17
2.6.2 I2C® Mode ........................................................................................................... 18
2.6.3 Control Port Bit Definitions .................................................................................. 18
2.7 Power-up/Reset/Power Down Mode ................................................................................ 18
2.8 DAC Calibration ............................................................................................................... 19
2.9 De-Emphasis ................................................................................................................... 19
2.10 Hold Function ................................................................................................................. 19
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/
Dolby is a registered trademark of Dolby Labratories Licensing Corporation.
Pro Logic, and AC-3 are trademarks of Dolby Labratories Licensing Corporation.
THX is a registered trademark of LucasArts Entertainment Company.
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 kind (express or implied). No responsibility is assumed by Cirrus Logic, Inc. for the use of this information, nor for infringements of patents or other rights
of third parties. This document is the property of Cirrus Logic, Inc. and implies no license under patents, copyrights, trademarks, or trade secrets. No part of
this publication may be copied, reproduced, stored in a retrieval system, or transmitted, in any form or by any means (electronic, mechanical, photographic, or
otherwise) without the prior written consent of Cirrus Logic, Inc. Items from any Cirrus Logic website or disk may be printed for use by the user. However, no
part of the printout or electronic files may be copied, reproduced, stored in a retrieval system, or transmitted, in any form or by any means (electronic, mechanical,
photographic, or otherwise) without the prior written consent of Cirrus Logic, Inc.Furthermore, no part of this publication may be used as a basis for manufacture
or sale of any items without the prior written consent of Cirrus Logic, Inc. The names of products of Cirrus Logic, Inc. or other vendors and suppliers appearing
in 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.
2
DS281PP2
CIRRUS [ CIRRUS LOGIC ]
