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CS44800-DQZ Datasheet(PDF) 3 Page - Cirrus Logic |
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CS44800-DQZ Datasheet(HTML) 3 Page - Cirrus Logic |
3 / 81 page DS632PP1 3 CS44800 TABLE OF CONTENTS 1. CHARACTERISTICS AND SPECIFICATIONS ........................................................................ 8 SPECIFIED OPERATING CONDITIONS ...................................................................................... 8 ABSOLUTE MAXIMUM RATINGS ................................................................................................. 8 DC ELECTRICAL CHARACTERISTICS ........................................................................................ 9 DIGITAL INTERFACE CHARACTERISTICS ................................................................................. 9 PWM OUTPUT PERFORMANCE CHARACTERISTICS ............................................................. 10 PWM FILTER CHARACTERISTICS ............................................................................................ 11 SWITCHING CHARACTERISTICS - XTI ..................................................................................... 11 SWITCHING CHARACTERISTICS - SYS_CLK .......................................................................... 12 SWITCHING CHARACTERISTICS - PWMOUTA1-B4 ................................................................ 12 SWITCHING CHARACTERISTICS - PS_SYNC .......................................................................... 12 SWITCHING CHARACTERISTICS - DAI INTERFACE ............................................................... 13 SWITCHING CHARACTERISTICS - CONTROL PORT - I²C FORMAT ...................................... 14 SWITCHING CHARACTERISTICS - CONTROL PORT - SPI FORMAT ..................................... 15 2. PIN DESCRIPTIONS ............................................................................................................. 16 2.1 I/O Pin Characteristics .................................................................................................. 20 3. TYPICAL CONNECTION DIAGRAMS ....................................................................... 21 4. APPLICATIONS ..................................................................................................................... 23 4.1 Overview .......................................................................................................................... 23 4.2 Feature Set Summary ..................................................................................................... 23 4.3 Clock Generation ............................................................................................................. 24 4.3.1 FsIn Domain Clocking ......................................................................................... 25 4.3.2 FsOut Domain Clocking ...................................................................................... 25 4.4 FsIn Clock Domain Modules ............................................................................................ 27 4.4.1 Digital Audio Input Port ....................................................................................... 27 4.4.2 Auto Rate Detect ................................................................................................. 31 4.4.3 De-Emphasis ...................................................................................................... 31 4.5 FsOut Clock Domain Modules ......................................................................................... 32 4.5.1 Sample Rate Converter ...................................................................................... 32 4.5.2 Load Compensation Filter ................................................................................... 32 4.5.3 Digital Volume and Mute Control ........................................................................ 32 4.5.4 Peak Detect / Limiter ........................................................................................... 33 4.5.5 PWM Engines ..................................................................................................... 33 4.5.6 Interpolation Filter ............................................................................................... 34 4.5.7 Quantizer ............................................................................................................ 34 4.5.8 Modulator ............................................................................................................ 34 4.5.9 PWM Outputs ...................................................................................................... 34 4.5.10 Power Supply Rejection (PSR) Real-Time Feedback ....................................... 35 4.6 Control Port Description and Timing ................................................................................ 36 4.6.1 SPI Mode ............................................................................................................ 36 4.6.2 I²C Mode ............................................................................................................. 37 4.6.3 GPIOs ................................................................................................................. 38 4.6.4 Host Interrupt ...................................................................................................... 38 5. POWER SUPPLY, GROUNDING, AND PCB LAYOUT ......................................................... 39 5.1 Reset and Power-Up ....................................................................................................... 42 5.1.1 PWM PopGuard® Transient Control ................................................................... 42 5.1.2 Recommended Power-Up Sequence ................................................................. 42 5.1.3 Recommended PSR Calibration Sequence ....................................................... 43 5.1.4 Recommended Power-Down Sequence ............................................................. 44 6. REGISTER QUICK REFERENCE .......................................................................................... 45 7. REGISTER DESCRIPTION .................................................................................................... 49 7.1 Memory Address Pointer (MAP) ...................................................................................... 49 |
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