ADAU1401A
TABLE OF CONTENTS
Features .............................................................................................. 1
Address Maps.............................................................................. 29
Parameter RAM.......................................................................... 29
Data RAM ................................................................................... 29
Read/Write Data Formats ......................................................... 29
Control Register Map..................................................................... 31
Control Register Details ................................................................ 33
Applications....................................................................................... 1
General Description......................................................................... 1
Functional Block Diagram .............................................................. 1
Revision History ............................................................................... 2
Specifications..................................................................................... 3
Analog Performance .................................................................... 3
Digital Input/Output.................................................................... 4
Power.............................................................................................. 5
Temperature Range ...................................................................... 5
PLL and Oscillator........................................................................ 5
Regulator........................................................................................ 5
Digital Timing Specifications ..................................................... 6
Absolute Maximum Ratings............................................................ 9
Thermal Resistance ...................................................................... 9
ESD Caution.................................................................................. 9
Pin Configuration and Function Descriptions........................... 10
Typical Performance Characteristics ........................................... 13
System Block Diagram................................................................... 14
Theory of Operation ...................................................................... 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
Numeric Formats........................................................................ 28
Programming.............................................................................. 28
RAMs and Registers....................................................................... 29
Address 2048 to Address 2055 (0x0800 to 0x0807)—
Interface Registers...................................................................... 33
Address 2056 (0x0808)—GPIO Pin Setting Register ............ 34
Address 2057 to Address 2060 (0x0809 to 0x080C)—
Auxiliary ADC Data Registers.................................................. 35
Address 2064 to Address 2068 (0x0810 to 0x0814)—
Safeload Data Registers.............................................................. 36
Address 2069 to Address 2073 (0x0815 to 0x0819)—
Safeload Address Registers........................................................ 36
Address 2074 and Address 2075 (0x081A and 0x081B)—
Data Capture Registers .............................................................. 37
Address 2076 (0x081C)—DSP Core Control Register.......... 38
Address 2078 (0x081E)—Serial Output Control Register.... 39
Address 2079 (0x081F)—Serial Input Control Register ....... 40
Address 2080 and Address 2081 (0x0820 and 0x0821)—
Multipurpose Pin Configuration Registers............................. 41
Address 2082 (0x0822)—
Auxiliary ADC and Power Control Register .......................... 42
Address 2084 (0x0824)—Auxiliary ADC Enable Register..........42
Address 2086 (0x0826)—Oscillator Power-Down Register........42
Address 2087 (0x0827)—DAC Setup Register....................... 42
Multipurpose Pins.......................................................................... 43
Auxiliary ADC............................................................................ 43
General-Purpose Input/Output Pins....................................... 43
Serial Data Input/Output Ports ................................................ 43
Layout Recommendations............................................................. 46
Parts Placement .......................................................................... 46
Grounding................................................................................... 46
Typical Application Schematics.................................................... 47
Self-Boot Mode........................................................................... 47
I2C Control .................................................................................. 48
SPI Control.................................................................................. 49
Outline Dimensions....................................................................... 50
Ordering Guide .......................................................................... 50
REVISION HISTORY
4/10—Revision 0: Initial Version
Rev. 0 | Page 2 of 2
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