CS42432
TABLE OF CONTENTS
1. PIN DESCRIPTIONS - SOFTWARE MODE ........................................................................................... 6
1.1 Digital I/O Pin Characteristics ........................................................................................................... 8
2. PIN DESCRIPTIONS - HARDWARE MODE ......................................................................................... 9
3. TYPICAL CONNECTION DIAGRAMS ................................................................................................. 11
4. CHARACTERISTICS AND SPECIFICATIONS .................................................................................... 13
RECOMMENDED OPERATING CONDITIONS ................................................................................... 13
ABSOLUTE MAXIMUM RATINGS ....................................................................................................... 13
ANALOG INPUT CHARACTERISTICS (COMMERCIAL) .................................................................... 14
ANALOG INPUT CHARACTERISTICS (AUTOMOTIVE) ..................................................................... 15
ADC DIGITAL FILTER CHARACTERISTICS ....................................................................................... 16
ANALOG OUTPUT CHARACTERISTICS (COMMERCIAL) ................................................................ 17
ANALOG OUTPUT CHARACTERISTICS (AUTOMOTIVE) ................................................................. 18
COMBINED DAC INTERPOLATION & ON-CHIP ANALOG FILTER RESPONSE .............................. 20
SWITCHING SPECIFICATIONS - ADC/DAC PORT ............................................................................ 21
SWITCHING CHARACTERISTICS - AUX PORT ................................................................................. 22
SWITCHING SPECIFICATIONS - CONTROL PORT - I²C MODE ....................................................... 23
SWITCHING SPECIFICATIONS - CONTROL PORT - SPI FORMAT ................................................. 24
DC ELECTRICAL CHARACTERISTICS .............................................................................................. 25
DIGITAL INTERFACE SPECIFICATIONS & CHARACTERISTICS ..................................................... 25
5. APPLICATIONS ................................................................................................................................... 26
5.1 Overview ......................................................................................................................................... 26
5.2 Analog Inputs .................................................................................................................................. 27
5.2.1 Line-Level Inputs ................................................................................................................... 27
5.2.1.1 Hardware Mode ......................................................................................................... 27
5.2.1.2 Software Mode ........................................................................................................... 27
5.2.2 High-Pass Filter and DC Offset Calibration ........................................................................... 27
5.2.2.1 Hardware Mode ......................................................................................................... 28
5.2.2.2 Software Mode ........................................................................................................... 28
5.3 Analog Outputs ............................................................................................................................... 28
5.3.1 Initialization ............................................................................................................................ 28
5.3.2 Line-Level Outputs and Filtering ........................................................................................... 28
5.3.3 Digital Volume Control ........................................................................................................... 30
5.3.3.1 Hardware Mode ......................................................................................................... 30
5.3.3.2 Software Mode ........................................................................................................... 30
5.3.4 De-Emphasis Filter ................................................................................................................ 30
5.4 System Clocking ............................................................................................................................. 31
5.4.1 Hardware Mode ..................................................................................................................... 31
5.4.2 Software Mode ...................................................................................................................... 31
5.5 CODEC Digital Interface ................................................................................................................. 31
5.5.1 TDM ....................................................................................................................................... 31
5.5.2 I/O Channel Allocation ........................................................................................................... 32
5.6 AUX Port Digital Interface Formats ................................................................................................ 32
5.6.1 Hardware Mode ..................................................................................................................... 32
5.6.2 Software Mode ...................................................................................................................... 32
5.6.3 I²S .......................................................................................................................................... 32
5.6.4 Left-Justified .......................................................................................................................... 33
5.7 Control Port Description and Timing ............................................................................................... 33
5.7.1 SPI Mode ............................................................................................................................... 33
5.7.2 I²C Mode ................................................................................................................................ 34
5.8 Recommended Power-Up Sequence ............................................................................................. 35
5.8.1 Hardware Mode ..................................................................................................................... 35
5.8.2 Software Mode ...................................................................................................................... 36
2
DS673F2
CIRRUS [ CIRRUS LOGIC ]
