Processor. ADAU1401 Datasheet

ADAU1401 Datasheet PDF

Part ADAU1401
Description SigmaDSP 28-/56-Bit Audio Processor
Feature www.DataSheet4U.com SigmaDSP 28-/56-Bit Audio Processor with Two ADCs and Four DACs ADAU1401 GENERA.
Manufacture Analog Devices
Datasheet
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SigmaDSP 28-/56-Bit Audio Processor with Two ADCs and Four D ADAU1401A Datasheet





ADAU1401
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SigmaDSP 28-/56-Bit Audio Processor
with Two ADCs and Four DACs
ADAU1401
FEATURES
GENERAL DESCRIPTION
28-/56-bit, 50 MIPS digital audio processor
2 ADCs: SNR of 100 dB, THD + N of −83 dB
4 DACs: SNR of 104 dB, THD + N of −90 dB
Complete standalone operation
Self-boot from serial EEPROM
Auxiliary ADC with 4-input mux for analog control
The ADAU1401 is a complete single-chip audio system with a
28-/56-bit audio DSP, ADCs, DACs, and microcontroller-like
control interfaces. Signal processing includes equalization, cross-
over, bass enhancement, multiband dynamics processing, delay
compensation, speaker compensation, and stereo image widening.
GPIOs for digital controls and outputs
This processing can be used to compensate for real-world
Fully programmable with SigmaStudio graphical tool
28-bit × 28-bit multiplier with 56-bit accumulator for full
double-precision processing
Clock oscillator for generating master clock from crystal
limitations of speakers, amplifiers, and listening environments,
providing dramatic improvements in perceived audio quality.
Its signal processing is comparable to that found in high
PLL for generating master clock from 64 × fS, 256 × fS,
384 × fS, or 512 × fS clocks
Flexible serial data input/output ports with I2S-compatible,
left-justified, right-justified, and TDM modes
Sampling rates of up to 192 kHz supported
On-chip voltage regulator for compatibility with 3.3 V systems
end studio equipment. Most processing is done in full 56-bit,
double-precision mode, resulting in very good low level signal
performance. The ADAU1401 is a fully programmable DSP. The
easy to use SigmaStudio™ software allows the user to graphically
configure a custom signal processing flow using blocks such as
48-lead, plastic LQFP
biquad filters, dynamics processors, level controls, and GPIO
APPLICATIONS
interface controls.
Multimedia speaker systems
MP3 player speaker docks
ADAU1401 programs can be loaded on power-up either from a
serial EEPROM through its own self-boot mechanism or from
Automotive head units
an external microcontroller. On power-down, the current state
Minicomponent stereos
Digital televisions
Studio monitors
Speaker crossovers
of the parameters can be written back to the EEPROM from the
ADAU1401 to be recalled the next time the program is run.
Two Σ-Δ ADCs and four Σ-Δ DACs provide a 98.5 dB analog
Musical instrument effects processors
In-seat sound systems (aircraft/motor coaches)
input to analog output dynamic. Each ADC has a THD + N of
−83 dB, and each DAC has a THD + N of −90 dB. Digital input
and output ports allow a glueless connection to additional
ADCs and DACs. The ADAU1401 communicates through an
I2C® bus or a 4-wire SPI port.
FUNCTIONAL BLOCK DIAGRAM
PLL
DIGITAL DIGITALANALOG ANALOG PLL LOOP
3.3V VDD GROUND VDD GROUND MODE FILTER
3
33
33
CRYSTAL
2
1.8V
REGULATOR
2-CHANNEL
ANALOG
INPUT
FILTA/
ADC_RES 2
STEREO
ADC
ADAU1401
PLL
28-/56-BIT, 50MIPS
AUDIO PROCESSOR CORE
40ms DELAY MEMORY
CLOCK
OSCILLATOR
DAC
DAC
2 FILTD/CM
4-CHANNEL
ANALOG
OUTPUT
RESET/
MODE
SELECT
CONTROL
INTERFACE
AND
SELFBOOT
8-CH
DIGITAL
INPUT
8-BIT
AUX
ADC
GPIO
8-CH
DIGITAL
OUTPUT
INPUT/OUTPUT MATRIX
5
RESET SELF
I2C/SPI
BOOT
AND
WRITEBACK
444
DIGITAL IN AUX ADC DIGITAL OUT
OR OR OR
GPIO
GPIO
GPIO
Figure 1.
Rev. 0
Information furnished by Analog Devices is believed to be accurate and reliable. However, no
responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other
rights of third parties that may result from its use. Specifications subject to change without notice. No
license is granted by implication or otherwise under any patent or patent rights of Analog Devices.
Trademarksandregisteredtrademarksarethepropertyoftheirrespectiveowners.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
www.analog.com
Fax: 781.461.3113
©2007 Analog Devices, Inc. All rights reserved.



ADAU1401
ADAU1401www.DataSheet4U.com
TABLE OF CONTENTS
Features .............................................................................................. 1
RAMs and Registers....................................................................... 29
Applications....................................................................................... 1
Address Maps.............................................................................. 29
General Description ......................................................................... 1
Parameter RAM.......................................................................... 29
Functional Block Diagram .............................................................. 1
Data RAM ................................................................................... 29
Revision History ............................................................................... 2
Read/Write Data Formats ......................................................... 29
Specifications..................................................................................... 3
Control Register Map..................................................................... 31
Analog Performance .................................................................... 3
Control Register Details ................................................................ 33
Digital Input/Output.................................................................... 4
2048 to 2055 (0x0800 to 0x0807)—Interface Registers......... 33
Power.............................................................................................. 5
2056 (0x808)—GPIO Pin Setting Register.............................. 34
Temperature Range ...................................................................... 5
PLL and Oscillator........................................................................ 5
Regulator........................................................................................ 5
Digital Timing Specifications ..................................................... 6
Digital Timing Diagrams................................................................. 7
Absolute Maximum Ratings............................................................ 9
Thermal Resistance ...................................................................... 9
ESD Caution.................................................................................. 9
Pin Configuration and Function Descriptions........................... 10
Typical Performance Characteristics ........................................... 13
System Block Diagram ................................................................... 14
Overview.......................................................................................... 15
Initialization .................................................................................... 16
Power-Up Sequence ................................................................... 16
Control Registers Setup ............................................................. 16
Recommended Program/Parameter Loading Procedure ..... 16
Power-Reduction Modes ........................................................... 16
Using the Oscillator.................................................................... 17
Setting Master Clock/PLL Mode .............................................. 17
Voltage Regulator ....................................................................... 18
Audio ADCs .................................................................................... 19
Audio DACs .................................................................................... 20
Control Ports................................................................................... 21
I2C Port ........................................................................................ 22
SPI Port ........................................................................................ 25
Self-Boot ...................................................................................... 26
Signal Processing ............................................................................ 28
2057 to 2060 (0x809 to 0x80C)—Auxiliary ADC
Data Registers ............................................................................. 35
2064 to 2068 (0x0810 to 0x814)—Safeload Data Registers.........36
2069 to 2073 (0x0815 to 0x819) Safeload Address Registers ......36
2074 to 2075 (0x081A to 0x081B)—Data Capture Registers......37
2076 (0x081C)—DSP Core Control Register ......................... 38
2078 (0x081E)—Serial Output Control Register ................... 39
2079 (0x081F)—Serial Input Control Register....................... 40
2080 to 2081 (0x0820 to 0x0821)—Multipurpose Pin
Configuration Registers............................................................. 41
2082 (0x0822)—Auxiliary ADC and Power Control ............ 42
2084 (0x0824)—Auxiliary ADC Enable.................................. 42
2086 (0x0826)—Oscillator Power-Down................................ 42
2087 (0x0827)—DAC Setup...................................................... 43
Multipurpose Pins .......................................................................... 44
Auxiliary ADC............................................................................ 44
General-Purpose Input/Output Pins....................................... 44
Serial Data Input/Output Ports ................................................ 44
Layout Recommendations............................................................. 47
Parts Placement .......................................................................... 47
Grounding ................................................................................... 47
Typical Application Schematics.................................................... 48
Self-Boot Mode........................................................................... 48
I2C Control .................................................................................. 49
SPI Control.................................................................................. 50
Outline Dimensions ....................................................................... 51
Ordering Guide .......................................................................... 51
Numeric Formats........................................................................ 28
Programming .............................................................................. 28
REVISION HISTORY
7/07—Revision 0: Initial Version
Rev. 0 | Page 2 of 52




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