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9 document revisions, Contacting cirrus logic support – Cirrus Logic AN298 User Manual

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AN298RC14

9 Document Revisions

9 Document Revisions

Revision

Date

Changes

RC1

December, 2006

Initial Release

RC2

September, 2007

Updated KICKSTART and PLL_STANDARD_CONFIG; added PLL_CUSTOM_CONFIG0, PLL_CUSTOM_
CONFIG1, and MALLOC_FAILURE.

RC3

December, 2007

Updated Legal Notice. Removed Softboot procedure that was duplicated in Chapter 2 of the
CS485xxHardware User’s Manual.

RC4

July, 2008

Updated

Table 2-1

with read and write address information for firmware modules listed in that table. Updated

implementation status and definitions of GPIO_D, GPIO_OE, and GPIO_MUX variables in

Table 4-1

. Added

DAI_CLOCK_SOURCE variable in

Table 4-1

.

RC5

October, 2008

Added Bits 20, 21, and 22 to the KICKSTART variable in

Table 4-1

. Changed product family number from

CS485xx to CS48xxxxx, which now covers the CS485xx, CS48AU2B, and CS48DV2B products.

RC6

October, 2008

Added

Section 2.2

, which describes .uld files. Updated

Table 2-1

, adding Audyssey Dynamic Volume and

Dynamic EQ, Audyssey EQ, and Audyssey EQ firmware modules to the table.

RC7

December, 2008

Modified

Section 7

.

RC8

August, 2009

Updated

Table 2-1

. Added

Table 2-2

. Updated bit definitions for index 0x0001, IO_CONFIG. Updated bit

definitions for index 0x0000, PCM_ENABLE.

RC9

September, 2009

Added Cirrus Bass Enhancer to

Table 2-1

.

RC10

September, 2009

Added “†” symbol for indices 0x0012 to 0x0019 in

Table 5-1

, indicating that the indices can be modified after

kick-start.

RC11

December, 2010

Added definition of Bit 8 to CONTROL_WORD variable in

Table 5-1

. Added index 0x0052 to

Table 4-1

.

RC12

November, 2011

Added information regarding PLL out of lock message to

Section 3.1.3

.

RC13

November, 2012

Updated PCM Manager Controls screenshot in

Fig. 6-2

.

RC14

March, 2013

Updated Index 0x000a–0x0021 and removed 0x0022 in

Table 5-1

.

Contacting Cirrus Logic Support

For all product questions and inquiries, contact a Cirrus Logic Sales Representative.
To find the one nearest you, go to

www.cirrus.com.

IMPORTANT NOTICE

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 verify,
before placing orders, that information being relied on is current and complete. All products are sold subject to the terms and conditions of sale supplied at the time of order
acknowledgment, including those pertaining to warranty, indemnification, and limitation of liability. No responsibility is assumed by Cirrus for the use of this information,
including use of this information as the basis for manufacture or sale of any items, or for infringement of patents or other rights of third parties. This document is the property
of Cirrus and by furnishing this information, Cirrus grants no license, express or implied under any patents, mask work rights, copyrights, trademarks, trade secrets or other
intellectual property rights. Cirrus owns the copyrights associated with the information contained herein 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 resale.

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 PRODUCTS
SURGICALLY IMPLANTED INTO THE BODY, AUTOMOTIVE SAFETY OR SECURITY DEVICES, LIFE SUPPORT PRODUCTS OR OTHER CRITICAL APPLICATIONS.
INCLUSION OF CIRRUS PRODUCTS IN SUCH APPLICATIONS IS UNDERSTOOD TO BE FULLY AT THE CUSTOMER’S RISK AND CIRRUS DISCLAIMS AND MAKES
NO WARRANTY, EXPRESS, STATUTORY OR IMPLIED, INCLUDING THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR PARTICULAR
PURPOSE, WITH REGARD TO ANY CIRRUS PRODUCT THAT IS USED IN SUCH A MANNER. IF THE CUSTOMER OR CUSTOMER’S CUSTOMER USES OR PERMITS
THE USE OF CIRRUS PRODUCTS IN CRITICAL APPLICATIONS, CUSTOMER AGREES, BY SUCH USE, TO FULLY INDEMNIFY CIRRUS, ITS OFFICERS, DIRECTORS,
EMPLOYEES, DISTRIBUTORS AND OTHER AGENTS FROM ANY AND ALL LIABILITY, INCLUDING ATTORNEYS’ FEES AND COSTS, THAT MAY RESULT FROM OR
ARISE IN CONNECTION WITH THESE USES.

Cirrus Logic, Cirrus, the Cirrus Logic logo designs, DSP Composer, and Intelligent Room Calibration are trademarks of Cirrus Logic, Inc. All other brand and product names
in this document may be trademarks or service marks of their respective owners.

Dolby, the “double-D” logo, Dolby Digital, Audistry, Dolby Headphone, Dolby Virtual Surround, and Pro Logic are registered trademarks of Dolby Laboratories, Inc. AAC is a
trademark of Dolby Laboratories, Inc. Supply of an implementation of Dolby Technology does not convey a license nor imply a right under any patent, or any other industrial
or Intellectual Property Right of Dolby Laboratories, to use the Implementation in any finished end-user or ready-to-use final product. It is hereby notified that a license for
such use is required from Dolby Laboratories.

DTS is a registered trademark of the Digital Theater Systems, Inc. DTS NEO:6 is a trademark of Digital Theater Systems, Inc. It is hereby notified that a third-party license
from DTS is necessary to distribute software of DTS in any finished end-user or ready-to-use final product.

THX® Technology by Lucasarts Entertainment Company Corporation. THX is a registered trademark of Lucasarts Entertainment Company Corporation.

SRS, Circle Surround, Trusurround, Trusurround XT, and TruBass are registered trademarks of SRS Labs, Inc. Circle Surround, Trusurround, Trusurround XT, and TruBass
technologies are incorporated under license from SRS Labs, Inc. The Circle Surround, Trusurround, Trusurround XT, and TruBass technology/solution rights incorporated in
the CS485xx are owned by SRS Labs, a U.S. Corporation and licensed to Cirrus Logic, Inc. Purchaser of CS485xx must sign a license for use of the chip and display of the
SRS Labs trademarks. Any products incorporating the CS485xx must be sent to SRS Labs for review. SRS Circle Surround, Trusurround, Trusurround XT, and TruBass
technologies are protected under US and foreign patents issued and/or pending. Circle Surround, Trusurround, Trusurround XT, TruBass, SRS and (O) symbol are trademarks
of SRS Labs, Inc. in the United States and selected foreign countries. Neither the purchase of the CS485xx, nor the corresponding sale of audio enhancement equipment
conveys the right to sell commercialized recordings made with any SRS technology/solution. SRS Labs requires all set makers to comply with all rules and regulations as
outlined in the SRS Trademark Usage Manual.