WM9090 Production Data
w PD, November 2010, Rev 4.1
2
TABLE OF CONTENTS
DESCRIPTION .......................................................................................................1
FEATURES.............................................................................................................1
APPLICATIONS .....................................................................................................1
BLOCK DIAGRAM .................................................................................................1
TABLE OF CONTENTS .........................................................................................2
PIN CONFIGURATION...........................................................................................4
ORDERING INFORMATION ..................................................................................4
PIN DESCRIPTION ................................................................................................5
ABSOLUTE MAXIMUM RATINGS.........................................................................6
RECOMMENDED OPERATING CONDITIONS .....................................................6
ELECTRICAL CHARACTERISTICS ......................................................................7
TERMINOLOGY............................................................................................................. 9
PERFORMANCE PLOTS............................................................................................. 10
TYPICAL PERFORMANCE..................................................................................11
POWER CONSUMPTION............................................................................................ 11
AUDIO SIGNAL PATHS DIAGRAM .....................................................................12
CONTROL INTERFACE TIMING .........................................................................13
DEVICE DESCRIPTION.......................................................................................14
INTRODUCTION.......................................................................................................... 14
INPUT SIGNAL PATH.................................................................................................. 15
LINE INPUTS ............................................................................................................................................ 16
INPUT PGA ENABLE ................................................................................................................................ 16
INPUT PGA CONFIGURATION ................................................................................................................ 17
INPUT PGA VOLUME CONTROL............................................................................................................. 17
OUTPUT SIGNAL PATH.............................................................................................. 20
OUTPUT SIGNAL PATHS ENABLE.......................................................................................................... 20
SPEAKER MIXER CONTROL ................................................................................................................... 21
SPEAKER OUTPUT VOLUME CONTROL................................................................................................ 22
SPEAKER BOOST MIXER CONTROL...................................................................................................... 22
HEADPHONE MIXER CONTROL ............................................................................................................. 23
HEADPHONE OUTPUT VOLUME CONTROL.......................................................................................... 24
AUTOMATIC GAIN CONTROL (AGC) ......................................................................... 27
AGC CONTROL ........................................................................................................................................ 27
AGC ANTI-CLIP ........................................................................................................................................ 27
AGC POWER LIMITING............................................................................................................................ 29
ANALOGUE OUTPUTS ............................................................................................... 31
SPEAKER OUTPUT CONFIGURATIONS................................................................................................. 31
HEADPHONE OUTPUT CONFIGURATIONS ........................................................................................... 32
CLOCKING CONTROL ................................................................................................ 32
CONTROL INTERFACE .............................................................................................. 34
CONTROL WRITE SEQUENCER................................................................................ 37
INITIATING A SEQUENCE ....................................................................................................................... 37
PROGRAMMING A SEQUENCE .............................................................................................................. 38
DEFAULT SEQUENCES........................................................................................................................... 40
POWER SEQUENCES AND POP SUPPRESSION CONTROL .................................. 43
INPUT VMID CLAMPS .............................................................................................................................. 43
HEADPHONE ENABLE/DISABLE............................................................................................................. 43
RECOMMENDED HEADPHONE START UP SEQUENCE....................................................................... 45
