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AK7755EN Datasheet(PDF) 3 Page - Asahi Kasei Microsystems |
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AK7755EN Datasheet(HTML) 3 Page - Asahi Kasei Microsystems |
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3 / 109 page  [AK7755] 014006643-E-00 2014/10 - 3 - 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 |
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