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CS4525 Datasheet(PDF) 3 Page - Cirrus Logic |
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CS4525 Datasheet(HTML) 3 Page - Cirrus Logic |
3 / 98 page DS726PP1 3 CS4525 TABLE OF CONTENTS 1. PIN DESCRIPTIONS - SOFTWARE MODE .......................................................................................... 8 2. PIN DESCRIPTIONS - HARDWARE MODE ....................................................................................... 10 2.1 Digital I/O Pin Characteristics ........................................................................................................ 12 3. TYPICAL CONNECTION DIAGRAMS .................................................................................................13 4. TYPICAL SYSTEM CONFIGURATION DIAGRAMS ........................................................................... 15 5. CHARACTERISTICS AND SPECIFICATIONS .................................................................................... 18 6. APPLICATIONS ................................................................................................................................... 26 6.1 Software Mode ............................................................................................................................... 26 6.1.1 System Clocking ................................................................................................................... 26 6.1.1.1 SYS_CLK Input Clock Mode .................................................................................... 26 6.1.1.2 Crystal Oscillator Mode ............................................................................................ 27 6.1.2 Power-Up and Power-Down ................................................................................................. 28 6.1.2.1 Recommended Power-Up Sequence ....................................................................... 28 6.1.2.2 Recommended Power-Down Sequence .................................................................. 28 6.1.3 Input Source Selection .......................................................................................................... 29 6.1.4 Digital Sound Processing ...................................................................................................... 29 6.1.4.1 Pre-Scaler ................................................................................................................. 30 6.1.4.2 Digital Signal Processing High-Pass Filter ............................................................... 30 6.1.4.3 Channel Mixer ..........................................................................................................30 6.1.4.4 De-Emphasis ............................................................................................................31 6.1.4.5 Tone Control ............................................................................................................. 31 6.1.4.6 Parametric EQ ..........................................................................................................33 6.1.4.7 Adaptive Loudness Compensation ........................................................................... 34 6.1.4.8 Bass Management .................................................................................................... 35 6.1.4.9 Volume and Muting Control ...................................................................................... 36 6.1.4.10 Peak Signal Limiter ................................................................................................. 37 6.1.4.11 Thermal Limiter .......................................................................................................39 6.1.4.12 Thermal Foldback ................................................................................................... 40 6.1.4.13 2-Way Crossover & Sensitivity Control ................................................................... 41 6.1.5 Auxiliary Serial Output .......................................................................................................... 43 6.1.6 Serial Audio Delay & Warning Input Port .............................................................................. 44 6.1.6.1 Serial Audio Delay Interface ..................................................................................... 44 6.1.6.2 External Warning Input Port ..................................................................................... 44 6.1.7 Powered PWM Outputs ........................................................................................................ 45 6.1.7.1 Output Channel Configurations ................................................................................ 45 6.1.7.2 PWM Popguard Transient Control ............................................................................ 45 6.1.8 Logic-Level PWM Outputs .................................................................................................... 46 6.1.8.1 Recommended PWM_SIG Power-Up Sequence for an External PWM Amplifier .... 47 6.1.8.2 Recommended PWM_SIG Power-Down Sequence for an External PWM Amplifier 47 6.1.8.3 Recommended PWM_SIG Power-Up Sequence for Headphone & Line-Out .......... 48 6.1.8.4 Recommended PWM_SIG Power-Down Sequence for Headphone & Line-Out ..... 48 6.1.8.5 PWM_SIG Logic-Level Output Configurations ......................................................... 49 6.1.9 PWM Modulator Configuration ..............................................................................................50 6.1.9.1 PWM Channel Delay ................................................................................................ 50 6.1.9.2 PWM AM Frequency Shift ........................................................................................ 51 6.1.10 Headphone Detection & Hardware Mute Input ................................................................... 51 6.1.11 Interrupt Reporting .............................................................................................................. 53 6.1.12 Automatic Power Stage Shut-Down ................................................................................... 53 6.2 Hardware Mode ............................................................................................................................. 54 6.2.1 System Clocking ................................................................................................................... 54 6.2.2 Power-Up and Power-Down ................................................................................................. 54 6.2.2.1 Recommended Power-Up Sequence ....................................................................... 54 |
Similar Part No. - CS4525_07 |
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Similar Description - CS4525_07 |
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