[AK4438]
3. Table of Contents
1. General Description............................................................................................................................. 1
2. Features............................................................................................................................................... 1
3. Table of Contents................................................................................................................................ 2
4. Block Diagram and Functions ............................................................................................................. 3
5. Pin Configurations and Functions ....................................................................................................... 4
■ Pin Configurations.............................................................................................................................. 4
■ Pin Functions...................................................................................................................................... 5
■ Handling of Unused Pin ..................................................................................................................... 6
6. Absolute Maximum Ratings................................................................................................................. 7
7. Recommended Operation Conditions................................................................................................. 7
8. Electrical Characteristics..................................................................................................................... 8
9. Filter Characteristics (fs=48kHz)......................................................................................................... 9
■ Sharp Roll-Off Filter (SD bit = “0”, SLOW bit = “0”) ........................................................................... 9
■ Slow Roll-Off Filter (SD bit = “0”, SLOW bit = “1”).......................................................................... 10
■ Short Delay Sharp Roll-Off Filter (SD bit = “1”, SLOW bit = “0”)..................................................... 11
■ Short Delay Slow Roll-Off Filter (SD bit = “1”, SLOW bit = “1”)....................................................... 12
10. DC Characteristics......................................................................................................................... 13
11. Switching Characteristics............................................................................................................... 14
■ Timing Diagram................................................................................................................................ 17
12. Functional Descriptions.................................................................................................................. 21
■ System Clock ................................................................................................................................... 21
■ De-emphasis Filter........................................................................................................................... 24
■ Audio Interface Format..................................................................................................................... 25
■ Digital Filter ...................................................................................................................................... 34
■ Zero Detection.................................................................................................................................. 34
■ Digital Volume Function................................................................................................................... 35
■ LR Channel Output Signal Select.................................................................................................... 36
■ Soft Mute Operation......................................................................................................................... 38
■ Error Detection................................................................................................................................. 39
■ System Reset................................................................................................................................... 39
■ Power Down Function...................................................................................................................... 40
■ Power Off and Reset Functions....................................................................................................... 41
■ Clock Synchronization ..................................................................................................................... 45
■ Parallel Mode ................................................................................................................................... 47
■ Audio Interface................................................................................................................................. 47
■ Soft Mute.......................................................................................................................................... 47
■ Serial Control Interface .................................................................................................................... 48
■ Register Map.................................................................................................................................... 52
■ Register Definitions.......................................................................................................................... 53
13. Recommended External Circuits ................................................................................................... 58
■ Typical Connection Diagram............................................................................................................ 58
14. Package ......................................................................................................................................... 61
■ Outline Dimensions.......................................................................................................................... 61
■ Material & Lead Finish ..................................................................................................................... 61
■ Marking............................................................................................................................................. 62
15. Ordering Guide............................................................................................................................... 62
■ Ordering Guide................................................................................................................................. 62
16. Revision History............................................................................................................................. 62
IMPORTANT NOTICE............................................................................................................................ 63
016001925-E-00
2016/03
- 2 -
AKM [ ASAHI KASEI MICROSYSTEMS ]
