CS42L51
TABLE OF CONTENTS
1. PIN DESCRIPTIONS - SOFTWARE (HARDWARE) MODE .................................................... 7
1.1 Digital I/O Pin Characteristics ............................................................................................ 9
2. TYPICAL CONNECTION DIAGRAMS ................................................................................... 10
3. CHARACTERISTIC AND SPECIFICATION TABLES ........................................................... 12
SPECIFIED OPERATING CONDITIONS............................................................................... 12
ABSOLUTE MAXIMUM RATINGS ......................................................................................... 12
ANALOG INPUT CHARACTERISTICS (COMMERCIAL - CNZ)............................................ 13
ANALOG INPUT CHARACTERISTICS (AUTOMOTIVE - DNZ) ............................................ 14
ADC DIGITAL FILTER CHARACTERISTICS......................................................................... 15
ANALOG OUTPUT CHARACTERISTICS (COMMERCIAL - CNZ)........................................ 16
ANALOG OUTPUT CHARACTERISTICS (AUTOMOTIVE - DNZ) ........................................ 17
LINE OUTPUT VOLTAGE CHARACTERISTICS................................................................... 18
HEADPHONE OUTPUT POWER CHARACTERISTICS........................................................ 19
COMBINED DAC INTERPOLATION & ON-CHIP ANALOG FILTER RESPONSE................ 20
SWITCHING SPECIFICATIONS - SERIAL PORT ................................................................. 20
SWITCHING SPECIFICATIONS - I²C CONTROL PORT....................................................... 22
SWITCHING CHARACTERISTICS - SPI CONTROL PORT.................................................. 23
DC ELECTRICAL CHARACTERISTICS ................................................................................ 24
DIGITAL INTERFACE SPECIFICATIONS & CHARACTERISTICS....................................... 24
POWER CONSUMPTION ...................................................................................................... 25
4. APPLICATIONS ..................................................................................................................... 26
4.1 Overview .......................................................................................................................... 26
4.1.1 Architecture ......................................................................................................... 26
4.1.2 Line & MIC Inputs ............................................................................................... 26
4.1.3 Line & Headphone Outputs ................................................................................. 26
4.1.4 Signal Processing Engine ................................................................................... 26
4.1.5 Beep Generator .................................................................................................. 26
4.1.6 Device Control (Hardware or Software Mode) .................................................... 26
4.1.7 Power Management ............................................................................................ 26
4.2 Hardware Mode ............................................................................................................... 27
4.3 Analog Inputs .................................................................................................................. 28
4.3.1 Digital Code, Offset & DC Measurement ............................................................ 28
4.3.2 High-Pass Filter and DC Offset Calibration ........................................................ 29
4.3.3 Digital Routing ..................................................................................................... 29
4.3.4 Differential Inputs ................................................................................................ 29
4.3.4.1 External Passive Components ................................................................ 29
4.3.5 Analog Input Multiplexer ..................................................................................... 30
4.3.6 MIC & PGA Gain ................................................................................................. 31
4.3.7 Automatic Level Control (ALC) ........................................................................... 31
4.3.8 Noise Gate .......................................................................................................... 32
4.4 Analog Outputs ................................................................................................................ 33
4.4.1 De-Emphasis Filter ............................................................................................. 33
4.4.2 Volume Controls ................................................................................................. 34
4.4.3 Mono Channel Mixer ........................................................................................... 34
4.4.4 Beep Generator .................................................................................................. 34
4.4.5 Tone Control ....................................................................................................... 35
4.4.6 Limiter ................................................................................................................. 35
4.4.7 Line-Level Outputs and Filtering ......................................................................... 36
4.4.8 On-Chip Charge Pump ....................................................................................... 36
4.5 Serial Port Clocking ......................................................................................................... 37
4.5.1 Slave ................................................................................................................... 37
4.5.2 Master ................................................................................................................. 38
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