wm9081 Wolfson Microelectronics plc, wm9081 Datasheet - Page 2

• Manufacturer Part Number: wm9081
• Description: Mono Dac With 2.6w Class Ab/d Speaker Driver, Dynamic Range Controller And Retune Mobile Parametric Equalizer
• Manufacturer: Wolfson Microelectronics plc

WM9081
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
TYPICAL POWER CONSUMPTION .................................................................... 10
TYPICAL PERFORMANCE DATA ....................................................................... 12
SIGNAL TIMING REQUIREMENTS ..................................................................... 13
DEVICE DESCRIPTION ....................................................................................... 18
w
COL28 ........................................................................................................................... 4
COMMON TEST CONDITIONS .................................................................................... 7
AUDIO DAC .................................................................................................................. 7
DIGITAL INTERFACES ................................................................................................. 9
CLOCKING AND TIMING .............................................................................................. 9
COMMON TEST CONDITIONS .................................................................................. 10
POWER CONSUMPTION MEASUREMENTS ............................................................ 10
SPEAKER CLASS D INTO 4Ω + 10μH ........................................................................ 12
SPEAKER CLASS D INTO 8Ω + 10μH ........................................................................ 12
SYSTEM CLOCK TIMING ........................................................................................... 13
AUDIO INTERFACE TIMING – MASTER MODE ........................................................ 13
AUDIO INTERFACE TIMING – SLAVE MODE ............................................................ 14
CONTROL INTERFACE TIMING – 2-WIRE MODE .................................................... 14
CONTROL INTERFACE TIMING – 3-WIRE MODE .................................................... 15
CONTROL INTERFACE TIMING – 4-WIRE MODE .................................................... 16
INTRODUCTION ......................................................................................................... 18
CONTROL INTERFACE (SOFTWARE MODE) ........................................................... 19
CONTROL INTERFACE (HARDWARE MODE) .......................................................... 25
CONTROL WRITE SEQUENCER ............................................................................... 28
POWER ON RESET CIRCUIT .................................................................................... 31
DYNAMIC RANGE CONTROLLER (DRC) .................................................................. 33
RETUNE MOBILE PARAMETRIC EQUALIZER (EQ) .................................................. 39
DIGITAL TO ANALOGUE CONVERTER (DAC) .......................................................... 43
SIGNAL PATH CONTROL .......................................................................................... 46
ANALOGUE OUTPUTS ............................................................................................... 49
POP SUPPRESSION CONTROL ................................................................................ 51
DIGITAL AUDIO INTERFACE ..................................................................................... 53
DIGITAL AUDIO INTERFACE CONTROL ................................................................... 60
CLOCKING AND SAMPLE RATES ............................................................................. 65
THERMAL SHUTDOWN ............................................................................................. 74
INTERRUPTS.............................................................................................................. 75
REFERENCE VOLTAGES AND MASTER BIAS ......................................................... 77
POWER MANAGEMENT ............................................................................................ 79
TABLE OF CONTENTS
PP, Rev 3.0, April 2009
Pre-Production
2