CS42432 Datasheet, PDF (2/62 Pages) Cirrus Logic – 108 dB, 192 kHz 4-in, 6-out TDM CODEC

TABLE OF CONTENTS
1 PIN DESCRIPTION - SOFTWARE MODE ................................................................................ 6
1.1 Digital I/O Pin Characteristics ............................................................................................ 7
2 PIN DESCRIPTIONS - HARDWARE MODE ............................................................................ 8
3 TYPICAL CONNECTION DIAGRAMS .................................................................................... 10
4 CHARACTERISTICS AND SPECIFICATIONS ....................................................................... 12
SPECIFIED OPERATING CONDITIONS ............................................................................... 12
ABSOLUTE MAXIMUM RATINGS ......................................................................................... 12
ANALOG INPUT CHARACTERISTICS (CS42432-CMZ)....................................................... 13
ANALOG INPUT CHARACTERISTICS (CS42432-DMZ)....................................................... 14
ADC DIGITAL FILTER CHARACTERISTICS ......................................................................... 15
ANALOG OUTPUT CHARACTERISTICS (CS42432-CMZ)................................................... 16
ANALOG OUTPUT CHARACTERISTICS (CS42432-DMZ)................................................... 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
5.2.2 High Pass Filter and DC Offset Calibration ....................................................... 27
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
5.3.4 De-Emphasis Filter .............................................................................................. 30
5.4 System Clocking .............................................................................................................. 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 .................................................................................. 33
5.6.1 I²S ........................................................................................................................ 33
5.6.2 Left Justified ........................................................................................................ 33
5.7 Control Port Description and Timing ................................................................................ 34
5.7.1 SPI Mode ............................................................................................................ 34
5.7.2 I²C Mode ............................................................................................................. 35
5.8 Recommended Power-up Sequence ............................................................................... 36
5.8.1 Hardware Mode ................................................................................................... 36
5.8.2 Software Mode .................................................................................................... 36
5.9 Reset and Power-up ....................................................................................................... 36
5.10 Power Supply, Grounding, and PCB layout ................................................................... 37
6 REGISTER QUICK REFERENCE ........................................................................................... 38
7 REGISTER DESCRIPTION ..................................................................................................... 40
7.1 Memory Address Pointer (MAP) ....................................................................................... 40
7.2 Chip I.D. and Revision Register (address 01h) (Read Only) ............................................ 40
7.3 Power Control (address 02h) ............................................................................................ 41
7.4 Functional Mode (address 03h) ........................................................................................ 42
7.5 Miscellaneous Control (address 04h) ............................................................................... 42
2
DS673PP2