CS42L52 Datasheet, PDF (3/82 Pages) Cirrus Logic – Low Power, Stereo CODEC w/Headphone & Speaker Amps

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 PASSTHRU CHARACTERISTICS ....................................................................................... 17
PWM OUTPUT CHARACTERISTICS (Note 9) .................................................................................... 17
LINE OUTPUT VOLTAGE LEVEL CHARACTERISTICS ..................................................................... 18
HEADPHONE OUTPUT POWER CHARACTERISTICS ...................................................................... 19
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 Passthru .................................................................................................. 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 ..................................................................................................................................... 36
4.9 Recommended Power-Up Sequence ............................................................................................. 37
4.10 Recommended Power-Down Sequence ...................................................................................... 37
4.11 Control Port Operation .................................................................................................................. 38
4.11.1 I²C Control ........................................................................................................................... 38
DS680A1
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