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Cirrus-logic CS48AU2B Manuel d'utilisateur

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Copyright 2009 Cirrus Logic MAY ’09
CONFIDENTIAL DS876F3
http://www.cirrus.com
CS48AU2B Data Sheet
CONFIDENTI
A
L
DRA
FT
DELPHI
FEATURES
World’s first cost-effective, high-performance 32-bit DSP
that is solely dedicated to enable Audyssey Laboratories
audio processing technologies for today’s high-volume
consumer electronic products
Features: Audyssey Dynamic Volume
TM
, Audyssey Dynamic
EQ
TM
, Audyssey EQ
TM
& Audyssey BassXT
TM
/BassXT-TV
TM
Audyssey Dynamic Volume eliminates the need for
constant volume adjustments
Audyssey Dynamic EQ enables a reference playback
experience at any desired playback level
Audyssey EQ removes much of the distortion caused by
speaker enclosures and the typical room environment
producing greatly improved sound compared to similar
products without correction
Audyssey BassXT and BassXT-TV are specifically
calibrated to enhance the physical bass response of each
product model
Configurable Serial Audio Inputs/Outputs
— Maximum 32-bit @ 192 kHz
(Note: Audyssey Laboratories algorithms support 48 kHz,
44.1 kHz and 32 kHz)
— Integrated 192 kHz capable S/PDIF transmitter
Integrated Clock Manager/PLL
— Can operate from external crystal, external oscillator
Input Fs Auto Detection & Coefficient Loading
Host Control & Boot via Serial Interface
Support for Master (Self) Boot via Serial EEPROM for
single Fs applications (i.e. 48 kHz only via ADC input)
Configurable GPIOs and External Interrupt Input
1.8V Core and a 3.3V I/O that is tolerant to 5V input
Low-power Mode
—“Energy Star
®
Ready” via low-power mode, 268 µW in
standby
32-bit
DSP
D
M
A
P X Y
Serial
Control 1
Multichannel
Audio Out
GPIO Debug
Watchdog
TMR1
TMR2
PLL
S/PDIF
Multichannel
Audio In
The brand new CS48AU2B device is still based on the same
high-performance 32-bit fixed point Digital Signal Processor
core but instead is equipped with much less memory, tailoring
it for more cost-effective applications which feature Audyssey
Laboratories audio processing technologies. Target
applications are:
— Digital Televisions
—iPod
®
Docking Stations
— Automotive Head Units (OEM and Aftermarket)
— Automotive Outboard Amplifiers (OEM and Aftermarket)
—Blu-ray
®
Disc Receivers
— Soundbars / Sound Projectors
The following Audyssey Laboratories algorithms are currently
supported on the CS48AU2B and more are in development:
While the individual Audyssey processing algorithms have
already been implemented on this DSP, the CS48AU2B is
programmed using the Cirrus proprietary DSP Composer
™
GUI development tool.
Processing chains combining both standard signal
processing blocks (Tone Control, Bass Management, etc.) in
combination with any combination of Audyssey Laboratories
technology algorithm blocks may be designed using a simple
drag-and-drop interface to create a custom signal flow
specific to your product model. The end result of this is a
software image that is down-loaded to the DSP via serial host
(I
2
C
®
or SPI
TM
) or via a serial master (self) boot.
Support for loading of the various Audyssey Laboratories
algorithm coefficient files supplied by Audyssey Laboratories
is easily supported via DSP Composer, enabling the
OEM/ODM to quickly be able to generate the necessary files
for the system microcontroller which have been custom
tailored for each specific model based on the measurement
and analysis performed by Audyssey Laboratories.
Ordering Information:
See page 21 for ordering information
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Résumé du contenu

Page 1 - CS48AU2B Data Sheet

Copyright 2009 Cirrus Logic MAY ’09CONFIDENTIAL DS876F3http://www.cirrus.comCS48AU2B Data SheetCONFIDENTIAL DRAFTDELPHIFEATURES World’s first cost-e

Page 2

CS48AU2B Data SheetDedicated 32-bit Audio DSP for Audyssey Laboratories Technology10 Copyright 2009 Cirrus Logic DS876F3CONFIDENTIALCONFIDENTIAL DRAFT

Page 3 - Table of Contents

CS48AU2B Data SheetDedicated 32-bit Audio DSP for Audyssey Laboratories TechnologyDS876F3 Copyright 2009 Cirrus Logic 11CONFIDENTIALCONFIDENTIAL DRAFT

Page 4 - List of Tables

CS48AU2B Data SheetDedicated 32-bit Audio DSP for Audyssey Laboratories Technology12 Copyright 2009 Cirrus Logic DS876F3CONFIDENTIALCONFIDENTIAL DRAFT

Page 5 - 2. Overview

CS48AU2B Data SheetDedicated 32-bit Audio DSP for Audyssey Laboratories TechnologyDS876F3 Copyright 2009 Cirrus Logic 13CONFIDENTIALCONFIDENTIAL DRAFT

Page 6 - 3. Code Overlays

CS48AU2B Data SheetDedicated 32-bit Audio DSP for Audyssey Laboratories Technology14 Copyright 2009 Cirrus Logic DS876F3CONFIDENTIALCONFIDENTIAL DRAFT

Page 7 - 4.1 DSP Core

CS48AU2B Data SheetDedicated 32-bit Audio DSP for Audyssey Laboratories TechnologyDS876F3 Copyright 2009 Cirrus Logic 15CONFIDENTIALCONFIDENTIAL DRAFT

Page 8 - 4.2 On-chip DSP Peripherals

CS48AU2B Data SheetDedicated 32-bit Audio DSP for Audyssey Laboratories Technology16 Copyright 2009 Cirrus Logic DS876F3CONFIDENTIALCONFIDENTIAL DRAFT

Page 9 - 4.3 DSP I/O Description

CS48AU2B Data SheetDedicated 32-bit Audio DSP for Audyssey Laboratories TechnologyDS876F3 Copyright 2009 Cirrus Logic 17CONFIDENTIALCONFIDENTIAL DRAFT

Page 10 - 5.1 Absolute Maximum Ratings

CS48AU2B Data SheetDedicated 32-bit Audio DSP for Audyssey Laboratories Technology18 Copyright 2009 Cirrus Logic DS876F3CONFIDENTIALCONFIDENTIAL DRAFT

Page 11 - CONFIDENTIAL

CS48AU2B Data SheetDedicated 32-bit Audio DSP for Audyssey Laboratories TechnologyDS876F3 Copyright 2009 Cirrus Logic 19CONFIDENTIALCONFIDENTIAL DRAFT

Page 12

CS48AU2B Data SheetDedicated 32-bit Audio DSP for Audyssey Laboratories Technology2 Copyright 2009 Cirrus Logic DS876F3CONFIDENTIALCONFIDENTIAL DRAFTD

Page 13

CS48AU2B Data SheetDedicated 32-bit Audio DSP for Audyssey Laboratories Technology20 Copyright 2009 Cirrus Logic DS876F3CONFIDENTIALCONFIDENTIAL DRAFT

Page 14

CS48AU2B Data SheetDedicated 32-bit Audio DSP for Audyssey Laboratories TechnologyDS876F3 Copyright 2009 Cirrus Logic 21CONFIDENTIALCONFIDENTIAL DRAFT

Page 15

CS48AU2B Data SheetDedicated 32-bit Audio DSP for Audyssey Laboratories Technology22 Copyright 2009 Cirrus Logic DS876F3CONFIDENTIALCONFIDENTIAL DRAFT

Page 16 - C Slave Mode

CS48AU2B Data SheetDedicated 32-bit Audio DSP for Audyssey Laboratories TechnologyDS876F3 Copyright 2009 Cirrus Logic 23CONFIDENTIALCONFIDENTIAL DRAFT

Page 17 - C Master Mode

CS48AU2B Data SheetDedicated 32-bit Audio DSP for Audyssey Laboratories Technology24 Copyright 2009 Cirrus Logic DS876F3CONFIDENTIALCONFIDENTIAL DRAFT

Page 18 - AI_DATAn

CS48AU2B Data SheetDedicated 32-bit Audio DSP for Audyssey Laboratories TechnologyDS876F3 Copyright 2009 Cirrus Logic 25CONFIDENTIALCONFIDENTIAL DRAFT

Page 19

CS48AU2B Data SheetDedicated 32-bit Audio DSP for Audyssey Laboratories Technology26 Copyright 2009 Cirrus Logic DS876F3CONFIDENTIALCONFIDENTIAL DRAFT

Page 20

CS48AU2B Data SheetDedicated 32-bit Audio DSP for Audyssey Laboratories TechnologyDS876F3 Copyright 2009 Cirrus Logic 3CONFIDENTIALCONFIDENTIAL DRAFTD

Page 21 - 6. Ordering Information

CS48AU2B Data SheetDedicated 32-bit Audio DSP for Audyssey Laboratories Technology4 Copyright 2009 Cirrus Logic DS876F3CONFIDENTIALCONFIDENTIAL DRAFTD

Page 22 - CS48AU2B-CQZ 260 °C 3 7 Days

CS48AU2B Data SheetDedicated 32-bit Audio DSP for Audyssey Laboratories TechnologyDS876F3 Copyright 2009 Cirrus Logic 5CONFIDENTIALCONFIDENTIAL DRAFTD

Page 23 - CS48AU2B

CS48AU2B Data SheetDedicated 32-bit Audio DSP for Audyssey Laboratories Technology6 Copyright 2009 Cirrus Logic DS876F3CONFIDENTIALCONFIDENTIAL DRAFTD

Page 24 - 48LDLQFP(7x7x1.4mmbody)

CS48AU2B Data SheetDedicated 32-bit Audio DSP for Audyssey Laboratories TechnologyDS876F3 Copyright 2009 Cirrus Logic 7CONFIDENTIALCONFIDENTIAL DRAFTD

Page 25 - 10. Revision History

CS48AU2B Data SheetDedicated 32-bit Audio DSP for Audyssey Laboratories Technology8 Copyright 2009 Cirrus Logic DS876F3CONFIDENTIALCONFIDENTIAL DRAFTD

Page 26

CS48AU2B Data SheetDedicated 32-bit Audio DSP for Audyssey Laboratories TechnologyDS876F3 Copyright 2009 Cirrus Logic 9CONFIDENTIALCONFIDENTIAL DRAFTD

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