Cirrus Logic CS42L52 - Manual (Page 3)

DS680F2 3
CS42L52
3/1/13
TABLE OF CONTENTS
1. PIN DESCRIPTIONS .............................................................................................................................. 8
1.1 I/O Pin Characteristics .................................................................................................................... 10
2. TYPICAL CONNECTION DIAGRAM ................................................................................................... 11
3. CHARACTERISTIC AND SPECIFICATIONS ...................................................................................... 12
RECOMMENDED OPERATING CONDITIONS ................................................................................... 12
ABSOLUTE MAXIMUM RATINGS ....................................................................................................... 12
ANALOG INPUT CHARACTERISTICS ................................................................................................ 13
ADC DIGITAL FILTER CHARACTERISTICS ....................................................................................... 14
ANALOG OUTPUT CHARACTERISTICS ............................................................................................ 15
ANALOG PASSTHROUGH CHARACTERISTICS ............................................................................... 16
PWM OUTPUT CHARACTERISTICS .................................................................................................. 17
HEADPHONE OUTPUT POWER CHARACTERISTICS ...................................................................... 18
LINE OUTPUT VOLTAGE LEVEL CHARACTERISTICS ..................................................................... 19
COMBINED DAC INTERPOLATION AND ONCHIP ANALOG FILTER RESPONSE .......................... 19
SWITCHING SPECIFICATIONS - SERIAL PORT ............................................................................... 20
SWITCHING SPECIFICATIONS - I²C CONTROL PORT ..................................................................... 21
DC ELECTRICAL CHARACTERISTICS .............................................................................................. 22
DIGITAL INTERFACE SPECIFICATIONS AND CHARACTERISTICS ................................................ 22
POWER CONSUMPTION .................................................................................................................... 23
4. APPLICATIONS ................................................................................................................................... 24
4.1 Overview ......................................................................................................................................... 24
4.1.1 Basic Architecture ................................................................................................................. 24
4.1.2 Line and MIC Inputs .............................................................................................................. 24
4.1.3 Line and Headphone Outputs ............................................................................................... 24
4.1.4 Speaker Driver Outputs ......................................................................................................... 24
4.1.5 Fixed Function DSP Engine .................................................................................................. 24
4.1.6 Beep Generator ..................................................................................................................... 24
4.1.7 Power Management .............................................................................................................. 24
4.2 Analog Inputs ................................................................................................................................. 25
4.2.1 MIC Inputs ............................................................................................................................. 26
4.2.2 Automatic Level Control (ALC) .............................................................................................. 26
4.2.3 Noise Gate ............................................................................................................................ 27
4.3 Analog Outputs .............................................................................................................................. 28
4.3.1 Beep Generator ..................................................................................................................... 29
4.3.2 Limiter .................................................................................................................................... 30
4.4 Analog In to Analog Out Passthrough ............................................................................................ 31
4.4.1 Overriding the ADC Power Down .......................................................................................... 31
4.4.2 Overriding the PGA Power Down .......................................................................................... 32
4.5 PWM Outputs ................................................................................................................................. 32
4.5.1 Mono Speaker Output Configuration ..................................................................................... 32
4.5.2 VP Battery Compensation ..................................................................................................... 33
4.5.2.1 Maintaining a Desired Output Level ........................................................................... 33
4.6 Serial Port Clocking ........................................................................................................................ 33
4.7 Digital Interface Formats ................................................................................................................ 35
4.7.1 DSP Mode ............................................................................................................................. 35
4.8 Initialization ..................................................................................................................................... 36
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
4.12.1 I²C Control ........................................................................................................................... 38
4.12.2 Memory Address Pointer (MAP) .......................................................................................... 39