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CS42448-CQZ Datasheet(PDF) 2 Page - Cirrus Logic |
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CS42448-CQZ Datasheet(HTML) 2 Page - Cirrus Logic |
2 / 64 page 2 DS648F3 CS42448 TABLE OF CONTENTS 1. PIN DESCRIPTIONS ...................................................................................................................... 6 1.1 Digital I/O Pin Characteristics .......................................................................................................... 8 2. TYPICAL CONNECTION DIAGRAM ..................................................................................................... 9 3. CHARACTERISTICS AND SPECIFICATIONS .................................................................................... 10 RECOMMENDED OPERATING CONDITIONS ................................................................................... 10 ABSOLUTE MAXIMUM RATINGS .......................................................................................................10 ANALOG INPUT CHARACTERISTICS (COMMERCIAL) .................................................................... 11 ANALOG INPUT CHARACTERISTICS (AUTOMOTIVE) ..................................................................... 12 ADC DIGITAL FILTER CHARACTERISTICS ....................................................................................... 13 ANALOG OUTPUT CHARACTERISTICS (COMMERCIAL) ................................................................ 14 ANALOG OUTPUT CHARACTERISTICS (AUTOMOTIVE) ................................................................. 15 COMBINED DAC INTERPOLATION & ON-CHIP ANALOG FILTER RESPONSE .............................. 17 SWITCHING SPECIFICATIONS - ADC/DAC PORT ............................................................................ 18 SWITCHING CHARACTERISTICS - AUX PORT ................................................................................. 20 SWITCHING SPECIFICATIONS - CONTROL PORT - I²C MODE ....................................................... 21 SWITCHING SPECIFICATIONS - CONTROL PORT - SPI FORMAT ................................................. 22 DC ELECTRICAL CHARACTERISTICS .............................................................................................. 23 DIGITAL INTERFACE SPECIFICATIONS & CHARACTERISTICS ..................................................... 23 4. APPLICATIONS ................................................................................................................................... 24 4.1 Overview ......................................................................................................................................... 24 4.2 Analog Inputs .................................................................................................................................. 24 4.2.1 Line-Level Inputs ................................................................................................................... 24 4.2.2 ADC3 Analog Input ................................................................................................................ 25 4.2.3 High-Pass Filter and DC Offset Calibration ........................................................................... 26 4.3 Analog Outputs ............................................................................................................................... 26 4.3.1 Initialization ............................................................................................................................ 26 4.3.2 Output Transient Control ....................................................................................................... 28 4.3.3 Popguard ............................................................................................................................... 28 4.3.3.1 Power-Up ................................................................................................................... 28 4.3.3.2 Power-Down .............................................................................................................. 28 4.3.4 Mute Control .......................................................................................................................... 28 4.3.5 Line-Level Outputs and Filtering ........................................................................................... 29 4.3.6 Digital Volume Control ........................................................................................................... 29 4.3.7 De-Emphasis Filter ................................................................................................................ 29 4.4 System Clocking ............................................................................................................................. 30 4.5 CODEC Digital Interface Formats .................................................................................................. 31 4.5.1 I²S .......................................................................................................................................... 32 4.5.2 Left-Justified .......................................................................................................................... 32 4.5.3 Right-Justified ........................................................................................................................ 32 4.5.4 OLM #1 .................................................................................................................................. 32 4.5.5 OLM #2 .................................................................................................................................. 33 4.5.6 TDM ....................................................................................................................................... 33 4.5.7 I/O Channel Allocation ........................................................................................................... 34 4.6 AUX Port Digital Interface Formats ................................................................................................ 34 4.6.1 I²S .......................................................................................................................................... 34 4.6.2 Left-Justified .......................................................................................................................... 35 4.7 Control Port Description and Timing ............................................................................................... 35 4.7.1 SPI Mode ............................................................................................................................... 35 4.7.2 I²C Mode ................................................................................................................................ 36 4.8 Interrupts ........................................................................................................................................ 37 4.9 Recommended Power-Up Sequence ............................................................................................. 38 4.10 Reset and Power-Up .................................................................................................................... 38 |
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