CS47L85 datasheet(3/370 Pages) CIRRUS

3 / 370 page

CS47L85

Rev 4.3

TABLE OF CONTENTS

PIN CONFIGURATION

......................................................................................................................... 7

ORDERING INFORMATION

................................................................................................................ 8

PIN DESCRIPTION

.............................................................................................................................. 8

ABSOLUTE MAXIMUM RATINGS

..................................................................................................... 15

RECOMMENDED OPERATING CONDITIONS

................................................................................. 16

ELECTRICAL CHARACTERISTICS

.................................................................................................. 17

TERMINOLOGY

...............................................................................................................................................28

THERMAL CHARACTERISTICS

....................................................................................................... 29

TYPICAL PERFORMANCE

................................................................................................................ 30

TYPICAL POWER CONSUMPTION

................................................................................................................30

TYPICAL SIGNAL LATENCY

..........................................................................................................................31

SIGNAL TIMING REQUIREMENTS

................................................................................................... 32

SYSTEM CLOCK & FREQUENCY LOCKED LOOP (FLL)

..............................................................................32

AUDIO INTERFACE TIMING

...........................................................................................................................34

DIGITAL MICROPHONE (DMIC) INTERFACE TIMING................................................................................................................................................ 34

DIGITAL SPEAKER (PDM) INTERFACE TIMING......................................................................................................................................................... 35

DIGITAL AUDIO INTERFACE - MASTER MODE ......................................................................................................................................................... 36

DIGITAL AUDIO INTERFACE - SLAVE MODE............................................................................................................................................................. 37

DIGITAL AUDIO INTERFACE - TDM MODE................................................................................................................................................................. 38

CONTROL INTERFACE TIMING

.....................................................................................................................39

2-WIRE (I2C) CONTROL MODE ................................................................................................................................................................................... 39

4-WIRE (SPI) CONTROL MODE ................................................................................................................................................................................... 40

SLIMBUS INTERFACE TIMING

......................................................................................................................41

JTAG INTERFACE TIMING

.............................................................................................................................43

DEVICE DESCRIPTION

..................................................................................................................... 44

INTRODUCTION

..............................................................................................................................................44

HI-FI AUDIO CODEC..................................................................................................................................................................................................... 44

DIGITAL AUDIO CORE ................................................................................................................................................................................................. 45

DIGITAL INTERFACES ................................................................................................................................................................................................. 45

OTHER FEATURES ...................................................................................................................................................................................................... 45

INPUT SIGNAL PATH

......................................................................................................................................47

ANALOGUE MICROPHONE INPUT.............................................................................................................................................................................. 49

ANALOGUE LINE INPUT .............................................................................................................................................................................................. 50

DIGITAL MICROPHONE INPUT.................................................................................................................................................................................... 50

INPUT SIGNAL PATH ENABLE .................................................................................................................................................................................... 52

INPUT SIGNAL PATH SAMPLE RATE CONTROL....................................................................................................................................................... 53

INPUT SIGNAL PATH CONFIGURATION .................................................................................................................................................................... 54

INPUT SIGNAL PATH DIGITAL VOLUME CONTROL.................................................................................................................................................. 61

INPUT SIGNAL PATH ANC CONTROL ........................................................................................................................................................................ 67

DIGITAL MICROPHONE PIN CONFIGURATION ......................................................................................................................................................... 67

DIGITAL CORE

................................................................................................................................................67

DIGITAL CORE MIXERS ............................................................................................................................................................................................... 70

DIGITAL CORE INPUTS................................................................................................................................................................................................ 74

DIGITAL CORE OUTPUT MIXERS ............................................................................................................................................................................... 75

5-BAND PARAMETRIC EQUALISER (EQ) ................................................................................................................................................................... 78

DYNAMIC RANGE CONTROL (DRC) ........................................................................................................................................................................... 82

LOW PASS / HIGH PASS DIGITAL FILTER (LHPF)..................................................................................................................................................... 94

DIGITAL CORE DSP ..................................................................................................................................................................................................... 96

SPDIF OUTPUT GENERATOR ..................................................................................................................................................................................... 97

TONE GENERATOR ..................................................................................................................................................................................................... 99

NOISE GENERATOR .................................................................................................................................................................................................. 100

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