4:2* CS42436 108 dB, 192 kHz 6-In, 6-Out TDM CODEC FEATURES GENERAL DESCRIPTION Six 24-bit A/D, Six 24-bit D/A Converters The CS42436 CODEC provides six multi-bit ana- 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 and outputs, in a 52-pin MQFP package. 102 dB Single-Ended Six fully differential, or single-ended, inputs are avail- DAC Dynamic Range able on stereo ADC1, ADC2, and ADC3. When 108 dB Differential operating in Single-ended Mode, an internal MUX be- fore ADC3 allows selection from up to four single-ended 105 dB Single-Ended inputs. Digital volume control is provided for each ADC ADC/DAC THD+N channel, with selectable overflow detection. -98 dB Differential All six DAC channels provide digital volume control and -95 dB Single-Ended can operate with differential or single-ended outputs. An auxiliary serial input is available for an additional two Compatible with Industry-Standard Time channels of PCM data. Division Multiplexed (TDM) Serial Interface The CS42436 is available in a 52-pin MQFP package in DAC Sampling Rates up to 192 kHz Commercial (-10C to +70C) and Automotive (-40C to +105C) grades. The CDB42438 Customer Demonstra- ADC Sampling Rates up to 96 kHz tion Board is also available for device evaluation and Programmable ADC High-Pass Filter for DC implementation suggestions. Please refer to Ordering Offset Calibration Information on page62 for complete ordering information. Logarithmic Digital Volume Control The CS42436 is ideal for audio systems requiring wide Hardware Mode or Software IC & SPI dynamic range, negligible distortion and low noise, such 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 Input Master 4 Oversampling Filter Filters Clock ADC1&2 Differential or 4 Single-Ended Multibit Analog Inputs TDM Serial Audio High Pass Digital Oversampling 2 Output Filter Filters ADC3 2 *Optional MUX allows selection from up to 4 single-ended inputs. NOV 13 Copyright Cirrus Logic, Inc. 2013 (All Rights Reserved) DS647F3 CS42436 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 ADC3 Analog Input ................................................................................................................ 28 5.2.3 Hardware Mode ..................................................................................................................... 29 5.2.4 Software Mode ...................................................................................................................... 29 5.2.5 High-Pass Filter and DC Offset Calibration ........................................................................... 29 5.2.5.1 Hardware Mode ......................................................................................................... 29 5.2.5.2 Software Mode ........................................................................................................... 29 5.3 Analog Outputs ............................................................................................................................... 30 5.3.1 Initialization ............................................................................................................................ 30 5.3.2 Line-Level Outputs and Filtering ........................................................................................... 30 5.3.3 Digital Volume Control ........................................................................................................... 32 5.3.3.1 Hardware Mode ......................................................................................................... 32 5.3.3.2 Software Mode ........................................................................................................... 32 5.3.4 De-Emphasis Filter ................................................................................................................ 32 5.4 System Clocking ............................................................................................................................. 33 5.4.1 Hardware Mode ..................................................................................................................... 33 5.4.2 Software Mode ...................................................................................................................... 33 5.5 CODEC Digital Interface ................................................................................................................. 33 5.5.1 TDM ....................................................................................................................................... 33 5.5.2 I/O Channel Allocation ........................................................................................................... 34 5.6 AUX Port Digital Interface Formats ................................................................................................ 34 5.6.1 Hardware Mode ..................................................................................................................... 34 5.6.2 Software Mode ...................................................................................................................... 34 5.6.3 IS .......................................................................................................................................... 35 5.6.4 Left-Justified .......................................................................................................................... 35 5.7 Control Port Description and Timing ............................................................................................... 35 5.7.1 SPI Mode ............................................................................................................................... 35 5.7.2 IC Mode ................................................................................................................................ 36 2 DS647F3