AS3515 V15

austriamicrosystems

Data Sheet, Confidential

www.austriamicrosystems.com

Revision 3.1

3

Contents

1

General Description ......................................................................................................................................... 1

2

Key Features.................................................................................................................................................... 1

3

Application ....................................................................................................................................................... 1

4

Block Diagram.................................................................................................................................................. 2

5

Absolute Maximum Ratings (Non-Operating)................................................................................................... 6

5.1

Operating Conditions ................................................................................................................................ 7

6

Detailed Functional Block Description.............................................................................................................. 8

6.1

Line Output ............................................................................................................................................... 8

6.1.1

General.............................................................................................................................................. 8

6.1.2

Register Description .......................................................................................................................... 8

6.1.3

Parameter .......................................................................................................................................... 9

6.2

Headphone Output ................................................................................................................................. 10

6.2.1

General............................................................................................................................................ 10

6.2.2

Phantom Ground ............................................................................................................................. 10

6.2.3

No-Pop Function.............................................................................................................................. 10

6.2.4

Over-current Protection ................................................................................................................... 10

6.2.5

Headphone Detection ...................................................................................................................... 10

6.2.6

Power Save Options ........................................................................................................................ 10

6.2.7

Parameter ........................................................................................................................................ 11

6.2.8

Register Description ........................................................................................................................ 11

6.3

Speaker Output....................................................................................................................................... 13

6.3.1

General............................................................................................................................................ 13

6.3.2

No-Pop Function.............................................................................................................................. 13

6.3.3

Over-current Protection ................................................................................................................... 13

6.3.4

Power Save Options ........................................................................................................................ 13

6.3.5

Parameter ........................................................................................................................................ 14

6.3.6

Register Description ........................................................................................................................ 14

6.4

Microphone Inputs (2x) ........................................................................................................................... 16

6.4.1

General............................................................................................................................................ 16

6.4.2

AGC................................................................................................................................................. 16

6.4.3

Supply & Detection .......................................................................................................................... 16

6.4.4

Remote Control................................................................................................................................ 16

6.4.5

Parameter ........................................................................................................................................ 17

6.4.6

Register Description ........................................................................................................................ 17

6.5

Line Inputs (2x) ....................................................................................................................................... 19

6.5.1

General............................................................................................................................................ 19

6.5.2

Parameter ........................................................................................................................................ 19

6.5.3

Register Description ........................................................................................................................ 19

6.6

Digital Audio Interface............................................................................................................................. 21

6.6.1

Input................................................................................................................................................. 21

6.6.2

Output.............................................................................................................................................. 21

6.6.3

Signal Description............................................................................................................................ 21

6.6.4

Power Save Options ........................................................................................................................ 21

6.6.5

Clock Supervision ............................................................................................................................ 21

6.6.6

Parameter ........................................................................................................................................ 22

6.6.7

Register Description ........................................................................................................................ 22

6.7

Audio Output Mixer ................................................................................................................................. 24

6.7.1

General............................................................................................................................................ 24

6.7.2

AGC................................................................................................................................................. 24

6.7.3

Register Description ........................................................................................................................ 24

6.8

Audio Settings......................................................................................................................................... 25

6.8.1

Register Description ........................................................................................................................ 25

6.9

3V Step-Up Converter............................................................................................................................. 27

6.9.1

General............................................................................................................................................ 27

6.9.2

Parameter ........................................................................................................................................ 28

6.10

Low Drop Out Regulators.................................................................................................................... 29

6.10.1

General ........................................................................................................................................ 29

6.10.2

LDO1............................................................................................................................................ 29

6.10.3

LDO2............................................................................................................................................ 29

6.10.4

LDO3............................................................................................................................................ 29

6.10.5

LDO4............................................................................................................................................ 30

6.10.6

Parameter .................................................................................................................................... 30

6.11

Charge-Pump Step-Down Converter................................................................................................... 32