Cirrus Logic CS42L51 - Manual (Page 3)

DS679F1 3
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 ........................................................................................................ 31
4.3.6 MIC & PGA Gain ................................................................................................................... 31
4.3.7 Automatic Level Control (ALC) .............................................................................................. 32
4.3.8 Noise Gate ............................................................................................................................ 33
4.4 Analog Outputs ............................................................................................................................... 34
4.4.1 De-Emphasis Filter ................................................................................................................ 34
4.4.2 Volume Controls .................................................................................................................... 35
4.4.3 Mono Channel Mixer ............................................................................................................. 35
4.4.4 Beep Generator ..................................................................................................................... 35
4.4.5 Tone Control .......................................................................................................................... 36
4.4.6 Limiter .................................................................................................................................... 36
4.4.7 Line-Level Outputs and Filtering ........................................................................................... 37
4.4.8 On-Chip Charge Pump .......................................................................................................... 38
4.5 Serial Port Clocking ........................................................................................................................ 38
4.5.1 Slave ..................................................................................................................................... 39
4.5.2 Master ................................................................................................................................... 39