AK7755EN_16 Datasheet, PDF (3/109 Pages) Asahi Kasei Microsystems – DSP with Mono ADC Stereo CODEC + Mic/Lineout Amp

[AK7755]
3. Table of Contents
1. General Description.................................................................................................................................................1
2. Features....................................................................................................................................................................1
3. Table of Contents.....................................................................................................................................................3
4. Block Diagram and Functions .................................................................................................................................4
■ Block Diagram ..........................................................................................................................................4
■ DSP Block Diagram ..................................................................................................................................5
5. Pin Configurations and Functions ...........................................................................................................................6
■ Ordering Guide..........................................................................................................................................6
■ Pin Layout .................................................................................................................................................6
■ Pin Functions.............................................................................................................................................9
■ Handling of Unused Pin ..........................................................................................................................10
6. Absolute Maximum Ratings ..................................................................................................................................11
7. Recommended Operating Conditions....................................................................................................................11
8. Electrical Characteristics .......................................................................................................................................12
■ Analog Characteristics ............................................................................................................................12
■ DC Characteristics...................................................................................................................................17
■ Power Consumptions...............................................................................................................................17
■ Digital Filter Characteritics .....................................................................................................................18
■ Switching Characteristics ........................................................................................................................19
9. Functional Description ..........................................................................................................................................26
■ System Clock...........................................................................................................................................26
■ Control Register Settings.........................................................................................................................30
■ Power-up Sequence .................................................................................................................................52
■ LDO (Internal Circuit Drive Regulator)..................................................................................................55
■ Power-down Sequence ............................................................................................................................55
■ Power-down and Reset............................................................................................................................56
■ RAM Clear ..............................................................................................................................................58
■ Serial Data Interface................................................................................................................................59
■ μP Interface Setting and Pin Status .........................................................................................................66
■ SPI Interface (I2CSEL pin = “L”)...........................................................................................................66
■ I²C Bus Interface (I2CSEL pin= “H”).....................................................................................................79
■ Analog Input Block .................................................................................................................................84
■ ADC Block ..............................................................................................................................................87
■ DAC Blocks ............................................................................................................................................90
■ Analog Output Block...............................................................................................................................92
■ Simple Write Error Check.......................................................................................................................94
■ EEPROM Interface..................................................................................................................................95
■ Digital Microphone Interface ..................................................................................................................99
■ Digital Mixer .........................................................................................................................................100
10. Recommended External Circuits .......................................................................................................................101
■ Connection Diagram..............................................................................................................................101
■ Peripheral Circuit ..................................................................................................................................105
11. Package..............................................................................................................................................................107
■ Outline Dimensions...............................................................................................................................107
■ Package & Lead frame material ............................................................................................................107
■ Marking .................................................................................................................................................108
12. Revision History................................................................................................................................................109
IMPORTANT NOTICE ........................................................................................................................................109
014006643-E-00
-3-
2014/10