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CS44800-CQZR Datenblatt(PDF) 3 Page - Cirrus Logic

Teilenummer CS44800-CQZR
Bauteilbeschribung  8-Channel Digital Amplifier Controller
Download  81 Pages
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Hersteller  CIRRUS [Cirrus Logic]
Direct Link  http://www.cirrus.com
Logo CIRRUS - Cirrus Logic

CS44800-CQZR Datenblatt(HTML) 3 Page - Cirrus Logic

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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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