CS42L52-DNZ 데이터 시트보기 (PDF) - Cirrus Logic

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CS42L52-DNZ

Low-power, Stereo CODEC w/ Headphone & Speaker Amps

Cirrus Logic 

5/13/08

CS42L52

TABLE OF CONTENTS

1. PIN DESCRIPTIONS .............................................................................................................................. 8

1.1 I/O Pin Characteristics ...................................................................................................................... 9

2. TYPICAL CONNECTION DIAGRAM ................................................................................................... 10

3. CHARACTERISTIC AND SPECIFICATIONS ...................................................................................... 11

RECOMMENDED OPERATING CONDITIONS ................................................................................... 11

ABSOLUTE MAXIMUM RATINGS ....................................................................................................... 11

ANALOG INPUT CHARACTERISTICS (COMMERCIAL - CNZ) .......................................................... 12

ANALOG INPUT CHARACTERISTICS (AUTOMOTIVE - DNZ) .......................................................... 13

ADC DIGITAL FILTER CHARACTERISTICS ....................................................................................... 14

ANALOG OUTPUT CHARACTERISTICS (COMMERCIAL - CNZ) ...................................................... 15

ANALOG OUTPUT CHARACTERISTICS (AUTOMOTIVE - DNZ) ...................................................... 16

ANALOG PASSTHROUGH CHARACTERISTICS ............................................................................... 17

PWM OUTPUT CHARACTERISTICS .................................................................................................. 17

HEADPHONE OUTPUT POWER CHARACTERISTICS ...................................................................... 19

LINE OUTPUT VOLTAGE LEVEL CHARACTERISTICS ..................................................................... 20

COMBINED DAC INTERPOLATION & ON-CHIP ANALOG FILTER RESPONSE .............................. 20

SWITCHING SPECIFICATIONS - SERIAL PORT ............................................................................... 21

SWITCHING SPECIFICATIONS - I²C CONTROL PORT ..................................................................... 22

DC ELECTRICAL CHARACTERISTICS .............................................................................................. 23

DIGITAL INTERFACE SPECIFICATIONS & CHARACTERISTICS ..................................................... 23

POWER CONSUMPTION .................................................................................................................... 24

4. APPLICATIONS ................................................................................................................................... 25

4.1 Overview ......................................................................................................................................... 25

4.1.1 Basic Architecture ................................................................................................................. 25

4.1.2 Line & MIC Inputs .................................................................................................................. 25

4.1.3 Line & Headphone Outputs ................................................................................................... 25

4.1.4 Speaker Driver Outputs ......................................................................................................... 25

4.1.5 Fixed Function DSP Engine .................................................................................................. 25

4.1.6 Beep Generator ..................................................................................................................... 25

4.1.7 Power Management .............................................................................................................. 25

4.2 Analog Inputs ................................................................................................................................. 26

4.2.1 MIC Inputs ............................................................................................................................. 27

4.2.2 Automatic Level Control (ALC) .............................................................................................. 27

4.2.3 Noise Gate ............................................................................................................................ 28

4.3 Analog Outputs .............................................................................................................................. 29

4.3.1 Beep Generator ..................................................................................................................... 30

4.3.2 Limiter .................................................................................................................................... 31

4.4 Analog In to Analog Out Passthrough ............................................................................................ 32

4.4.1 Overriding the ADC Power Down .......................................................................................... 32

4.4.2 Overriding the PGA Power Down .......................................................................................... 33

4.5 PWM Outputs ................................................................................................................................. 33

4.5.1 Mono Speaker Output Configuration ..................................................................................... 33

4.5.2 VP Battery Compensation ..................................................................................................... 33

4.5.2.1 Maintaining a Desired Output Level ........................................................................... 34

4.6 Serial Port Clocking ........................................................................................................................ 34

4.7 Digital Interface Formats ................................................................................................................ 36

4.7.1 DSP Mode ............................................................................................................................. 36

4.8 Initialization ..................................................................................................................................... 37

4.9 Recommended Power-up Sequence .............................................................................................. 37

4.10 Recommended Power-down Sequence ....................................................................................... 37

4.11 Required Initialization Settings ..................................................................................................... 37

4.12 Control Port Operation .................................................................................................................. 38

DS680F1

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