SSM2603
TABLE OF CONTENTS
Features .............................................................................................. 1
Digital Audio Interface.............................................................. 15
Software Control Interface........................................................ 17
Typical Application Circuits ......................................................... 18
Register Map ................................................................................... 19
Register Map Details ...................................................................... 20
Left-Channel ADC Input Volume, Address 0x00.................. 20
Right-Channel ADC Input Volume, Address 0x01 ............... 21
Left-Channel DAC Volume, Address 0x02............................. 22
Right-Channel DAC Volume, Address 0x03 .......................... 22
Analog Audio Path, Address 0x04 ........................................... 23
Digital Audio Path, Address 0x05............................................ 23
Power Management, Address 0x06.......................................... 24
Digital Audio I/F, Address 0x07 ............................................... 25
Sampling Rate, Address 0x08.................................................... 25
Active, Address 0x09.................................................................. 28
Software Reset, Address 0x0F................................................... 28
ALC Control 1, Address 0x10................................................... 29
ALC Control 2, Address 0x11................................................... 29
Noise Gate, Address 0x12.......................................................... 30
Outline Dimensions....................................................................... 31
Ordering Guide .......................................................................... 31
Applications....................................................................................... 1
General Description......................................................................... 1
Functional Block Diagram .............................................................. 1
Revision History ............................................................................... 2
Specifications..................................................................................... 3
Digital Filter Characteristics ....................................................... 4
Timing Characteristics ................................................................ 5
Absolute Maximum Ratings............................................................ 7
Thermal Resistance ...................................................................... 7
ESD Caution.................................................................................. 7
Pin Configuration and Function Descriptions............................. 8
Typical Performance Characteristics ............................................. 9
Converter Filter Response........................................................... 9
Digital De-Emphasis.................................................................. 10
Theory of Operation ...................................................................... 11
Digital Core................................................................................. 11
ADC and DAC............................................................................ 11
ADC High-Pass and DAC De-Emphasis Filters .................... 11
Hardware Mute Pin.................................................................... 11
Automatic Level Control (ALC)............................................... 12
Analog Interface ......................................................................... 13
REVISION HISTORY
2/08—Revision 0: Initial Version
Rev. 0 | Page 2 of 32
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