Datasheet

Maxim Integrated │ 3
MAX98090 Ultra-Low Power Stereo Audio Codec
www.maximintegrated.com
ADC Input Mixer Configuration ..............................................................95
Record Path FlexSound DSP ..................................................................95
Record Path Digital Filters..................................................................95
Record Path Sidetone .....................................................................98
Record Path Digital Gain and Level Control ....................................................99
Digital Audio Interface (DAI) Configuration ........................................................ 100
DAI Clock Control and Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 101
Master Mode Clock Configuration .............................................................101
Quick Configuration Mode .................................................................103
Exact Integer Mode ......................................................................104
Manual Ratio Mode ......................................................................105
Slave Mode Clock Configuration ..............................................................105
DAI Digital Audio Data Path Control and Routing .................................................107
DAI Digital Audio Data Format ................................................................110
TDM Mode Data Format ..................................................................113
Audio Playback Path ..........................................................................115
Playback Path FlexSound DSP................................................................115
Playback Path Digital Gain and Level Control..................................................115
Playback Path 7-Band Parametric Equalizer...................................................117
Playback Path Dynamic Range Control.......................................................120
Playback Path Digital Filters ...............................................................124
Digital-to-Analog Converter (DAC) Configuration..................................................124
Analog Audio Output Configuration .............................................................. 126
Analog Class AB Configurable Receiver/Line Output ..............................................127
Receiver/Earpiece Mixer and Gain Control ....................................................127
Line Output Mixer and Gain Control .........................................................129
Analog Class D Speaker Output...............................................................131
Speaker Output Mixer and Gain Control ......................................................132
Efficient Class D Speaker Output Driver ......................................................134
Analog Class-H Headphone Output ............................................................134
Headphone Output Mixer and Gain Control ...................................................135
Headphone Ground Sense ................................................................138
DirectDrive Headphone Output Amplifier .....................................................139
Class H Amplifier Charge Pump ............................................................139
Click-and-Pop Reduction ....................................................................141
Jack Detection .............................................................................. 143
Jack Detection Internal Comparators ...........................................................144
Jack Detection Programmable Debounce .......................................................144
TABLE OF CONTENTS (continued)