Datasheet

Maxim Integrated │ 4
MAX98090 Ultra-Low Power Stereo Audio Codec
www.maximintegrated.com
Jack Detection Interrupt Generation............................................................146
Operation with an Internal Pullup Resistance ....................................................146
Operation with an External Pullup Resistance ....................................................146
Accessory Button Detection ..................................................................148
Jack Detection with Internal Analog Microphones .................................................148
Quick Setup Configuration..................................................................... 150
Device Status Flags .......................................................................... 153
Status Flag Masking ........................................................................153
Device Revision Identification .................................................................. 154
I
2
C Serial Interface .......................................................................... 155
Bit Transfer ...............................................................................155
START and STOP Conditions.................................................................155
Early STOP Conditions ......................................................................155
Slave Address .............................................................................155
Acknowledge..............................................................................156
Write Data Format..........................................................................156
Read Data Format..........................................................................157
Applications Information....................................................................... 158
Typical Application Circuits ...................................................................158
Startup/Shutdown Register Sequencing.........................................................160
Component Selection .......................................................................161
AC-Coupling Capacitors ..................................................................161
Charge-Pump Capacitor Selection ..........................................................161
Filterless Class D Speaker Operation ..........................................................161
EMI Considerations and Optional Ferrite Bead Filter ............................................162
RF Susceptibility ...........................................................................162
Supply Bypassing, Layout, and Grounding.......................................................163
Recommended PCB Routing .................................................................163
Unused Pins ..............................................................................164
WLP Applications Information.................................................................164
Ordering Information ......................................................................... 165
Chip Information ............................................................................. 165
Package Information ......................................................................... 165
Revision History ............................................................................. 166
TABLE OF CONTENTS (continued)