CS42435_07 Datasheet, PDF(2/57 Page) Cirrus Logic – 108 dB, 192 kHz 4-In, 8-Out TDM CODEC

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CS42435_07 Datasheet, PDF (2/57 Pages) Cirrus Logic – 108 dB, 192 kHz 4-In, 8-Out TDM CODEC

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CS42435

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 - IÂ²C 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

5.3 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 IÂ²S .......................................................................................................................................... 32

5.6.4 Left-Justified .......................................................................................................................... 33

5.7 Control Port Description and Timing ............................................................................................... 33

5.7.1 SPI Mode ............................................................................................................................... 33

5.7.2 IÂ²C Mode ................................................................................................................................ 34

5.8 Recommended Power-Up Sequence ............................................................................................. 35

5.8.1 Hardware Mode ..................................................................................................................... 35

5.8.2 Software Mode ...................................................................................................................... 36

5.9 Reset and Power-Up ...................................................................................................................... 36

DS685F2

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