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CS42438 Scheda tecnica(PDF) 2 Page - Cirrus Logic |
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CS42438 Scheda tecnica(HTML) 2 Page - Cirrus Logic |
2 / 62 page 2 DS646F1 CS42438 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 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 I²S .......................................................................................................................................... 34 5.6.4 Left-Justified .......................................................................................................................... 35 5.7 Control Port Description and Timing ............................................................................................... 35 5.7.1 SPI Mode ............................................................................................................................... 35 5.7.2 I²C Mode ................................................................................................................................ 36 |
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