AK7735EQ Datasheet, PDF (3/142 Pages) Asahi Kasei Microsystems – Dual DSP with 4chADC + 4chDAC + 4chSRC

[AK7735]
3. Table of Contents
1. General Description .......................................................................................................................... 1
2. Features ............................................................................................................................................ 1
3. Table of Contents .............................................................................................................................. 3
4. Block Diagrams ................................................................................................................................. 5
■ Block Diagram ................................................................................................................................... 5
■ DSP Block Diagram........................................................................................................................... 6
5. Pin Configurations and Functions..................................................................................................... 7
■ Pin Configurations ............................................................................................................................. 7
■ Pin Functions..................................................................................................................................... 8
■ Handling of Unused Pins..................................................................................................................11
■ Internal Pulled-down Pins Status .....................................................................................................11
■ Power-down Status of Output Pins ................................................................................................. 12
6. Absolute Maximum Ratings ............................................................................................................ 13
7. Recommended Operating Conditions ............................................................................................ 13
8. Electrical Characteristics................................................................................................................. 14
■ Analog Characteristics .................................................................................................................... 14
■ Power Consumption ........................................................................................................................ 19
9. Digital Filter Characteristics ............................................................................................................ 20
■ ADC Block ....................................................................................................................................... 20
■ DAC Block ....................................................................................................................................... 24
■ SRC Block ....................................................................................................................................... 28
10. DC Characteristics .......................................................................................................................... 30
11. Switching Characateristics.............................................................................................................. 31
■ System Clock .................................................................................................................................. 31
■ Power Down .................................................................................................................................... 31
■ Serial Data Interface (SDIN1 ~ SDIN4, SDOUT1 ~ SDOUT4)....................................................... 32
■ SPI Interface.................................................................................................................................... 35
■ I²C Interface..................................................................................................................................... 37
12. Functional Descriptions................................................................................................................... 38
■ System Clock .................................................................................................................................. 38
■ Audio HUB....................................................................................................................................... 40
■ Audio Data Path Setting .................................................................................................................. 46
■ Power-up Sequence........................................................................................................................ 64
■ VREG (Internal Circuit Drive Regulator) ......................................................................................... 65
■ Power-down and Reset ................................................................................................................... 66
■ RAM Clear ....................................................................................................................................... 68
■ STO pin Output Status .................................................................................................................... 69
■ μP Interface Setting and Pin Statuses ............................................................................................ 70
■ SPI Interface.................................................................................................................................... 71
■ I²C Interface..................................................................................................................................... 85
■ Simple Write Error Check................................................................................................................ 90
■ DSP Block ....................................................................................................................................... 91
■ Analog Input Block .......................................................................................................................... 94
■ ADC Block ....................................................................................................................................... 97
■ DAC Block ..................................................................................................................................... 102
■ SRC Block ..................................................................................................................................... 107
■ Register Map ..................................................................................................................................113
■ Register Definitions ........................................................................................................................116
13. Recommended External Circuits .................................................................................................. 135
■ Connection Diagram ..................................................................................................................... 135
016014707-E-00
-3-
2016/12