CS42432 108 dB, 192 kHz 4-In, 6-Out TDM CODEC FEATURES GENERAL DESCRIPTION The CS42432 CODEC provides four multi-bit ana- Four 24-bit A/D, Six 24-bit D/A Converters log-to-digital and six multi-bit digital-to-analog ADC Dynamic Range delta-sigma converters. The CODEC is capable of op- 105 dB Differential eration with either differential or single-ended inputs 102 dB Single-Ended and outputs, in a 52-pin MQFP package. DAC Dynamic Range Four fully differential, or single-ended, inputs are avail- able on stereo ADC1 and ADC2. Digital volume control 108 dB Differential is provided for each ADC channel, with selectable over- 105 dB Single-Ended flow detection. ADC/DAC THD+N All six DAC channels provide digital volume control and -98 dB Differential can operate with differential or single-ended outputs. -95 dB Single-Ended An auxiliary serial input is available for an additional two channels of PCM data. Compatible with Industry-Standard Time The CS42432 is available in a 52-pin MQFP package in Division Multiplexed (TDM) Serial Interface Commercial (-10C to +70C) and Automotive (-40C to DAC Sampling Rates up to 192 kHz +105C) grades. The CDB42438 Customer Demonstra- tion Board is also available for device evaluation and ADC Sampling Rates up to 96 kHz implementation suggestions. Please refer to Ordering Programmable ADC High-Pass Filter for DC Information on page58 for complete ordering Offset Calibration information. Logarithmic Digital Volume Control The CS42432 is ideal for audio systems requiring wide dynamic range, negligible distortion and low noise, such Hardware Mode or Software IC & SPI as A/V receivers, DVD receivers, and automotive audio Supports Logic Levels Between 5 V and 1.8 V systems. Control Port & Serial Digital Supply = Analog Supply = Audio Port Supply = 3.3 V 3.3 V to 5 V 1.8 V to 5 V Hardware Mode or 2 I C/SPI Software Mode Control Data Internal Voltage Register Reference Configuration Reset Differential or Multibit 6 TDM Serial Audio Volume Digital Single-Ended DAC1-3 and Input Controls Filters Modulators Outputs Analog Filters 6 Auxilliary Serial Audio Input Multibit High Pass Digital 2 Input Master Oversampling Filter Filters Clock ADC1 Differential or 2 Single-Ended Multibit Analog Inputs High Pass TDM Serial Audio Digital 2 Oversampling Filter Output Filters ADC2 2 Copyright Cirrus Logic, Inc. 2017 MAR 17 (All Rights Reserved) DS673F5 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 - IC 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 IS .......................................................................................................................................... 32 5.6.4 Left-Justified .......................................................................................................................... 33 5.7 Control Port Description and Timing ............................................................................................... 33 5.7.1 SPI Mode ............................................................................................................................... 33 5.7.2 IC Mode ................................................................................................................................ 34 5.8 Recommended Power-Up Sequence ............................................................................................. 35 5.8.1 Hardware Mode ..................................................................................................................... 35 5.8.2 Software Mode ...................................................................................................................... 36 2 DS673F5