2

DS861PP1

CS5346

TABLE OF CONTENTS

1. PIN DESCRIPTIONS - CS5346 ............................................................................................................. 5

2. PIN COMPATIBILITY - CS5345/CS5346 DIFFERENCES ..................................................................... 7

3. CHARACTERISTICS AND SPECIFICATIONS ...................................................................................... 8

RECOMMENDED OPERATING CONDITIONS ................................................................................... 8

ABSOLUTE MAXIMUM RATINGS .......................................................................................................8

ANALOG CHARACTERISTICS (COMMERCIAL) ................................................................................ 9

ANALOG CHARACTERISTICS (COMMERCIAL) CONT. .................................................................. 10

ANALOG CHARACTERISTICS (AUTOMOTIVE) ............................................................................... 11

ANALOG CHARACTERISTICS (AUTOMOTIVE) CONT. ................................................................... 12

DIGITAL FILTER CHARACTERISTICS .............................................................................................. 13

DC ELECTRICAL CHARACTERISTICS ............................................................................................. 14

DIGITAL INTERFACE CHARACTERISTICS ...................................................................................... 15

SWITCHING CHARACTERISTICS - SERIAL AUDIO PORT ............................................................. 16

SWITCHING CHARACTERISTICS - CONTROL PORT - I²C FORMAT ............................................ 18

SWITCHING CHARACTERISTICS - CONTROL PORT - SPI FORMAT ........................................... 19

4. TYPICAL CONNECTION DIAGRAM ................................................................................................... 20

5. APPLICATIONS ................................................................................................................................... 21

5.1 Recommended Power-Up Sequence ............................................................................................. 21

5.2 System Clocking ............................................................................................................................. 21

5.2.1 Master Clock ......................................................................................................................... 21

5.2.2 Master Mode ......................................................................................................................... 22

5.2.3 Slave Mode ........................................................................................................................... 22

5.3 High-Pass Filter and DC Offset Calibration .................................................................................... 22

5.4 Analog Input Multiplexer, PGA, and Mic Gain ................................................................................23

5.5 Input Connections ........................................................................................................................... 23

5.5.1 Analog Input Configuration for 1 VRMS Input Levels ............................................................ 23

5.5.2 Analog Input Configuration for 2 VRMS Input Levels ............................................................ 24

5.6 PGA Auxiliary Analog Output ......................................................................................................... 25

5.7 Control Port Description and Timing ............................................................................................... 25

5.7.1 SPI Mode ............................................................................................................................... 25

5.7.2 I²C Mode ................................................................................................................................ 26

5.8 Interrupts and Overflow .................................................................................................................. 27

5.9 Reset .............................................................................................................................................. 28

5.10 Synchronization of Multiple Devices ............................................................................................. 28

5.11 Grounding and Power Supply Decoupling .................................................................................... 28

6. REGISTER QUICK REFERENCE ........................................................................................................ 29

7. REGISTER DESCRIPTION .................................................................................................................. 30

7.1 Chip ID - Register 01h .................................................................................................................... 30

7.2 Power Control - Address 02h ......................................................................................................... 30

7.2.1 Freeze (Bit 7) ......................................................................................................................... 30

7.2.2 Power-Down MIC (Bit 3) ........................................................................................................ 30

7.2.3 Power-Down ADC (Bit 2) ....................................................................................................... 30

7.2.4 Power-Down Device (Bit 0) ................................................................................................... 30

7.3 ADC Control - Address 04h ............................................................................................................ 31

7.3.1 Functional Mode (Bits 7:6) .................................................................................................... 31

7.3.2 Digital Interface Format (Bit 4) .............................................................................................. 31

7.3.3 Mute (Bit 2) ............................................................................................................................ 31

7.3.4 High-Pass Filter Freeze (Bit 1) .............................................................................................. 31

7.3.5 Master / Slave Mode (Bit 0) ................................................................................................... 31

7.4 MCLK Frequency - Address 05h .................................................................................................... 32

7.4.1 Master Clock Dividers (Bits 6:4) ............................................................................................ 32

7.5 PGAOut Control - Address 06h ...................................................................................................... 32