wm8982gefl-v Wolfson Microelectronics plc, wm8982gefl-v Datasheet - Page 2

• Manufacturer Part Number: wm8982gefl-v
• Description: Mono Codec With Speaker Driver And Video Buffer
• Manufacturer: Wolfson Microelectronics plc

WM8982
DESCRIPTION .......................................................................................................1
BLOCK DIAGRAM .................................................................................................1
FEATURES.............................................................................................................1
APPLICATIONS .....................................................................................................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
SPEAKER OUTPUT THD VERSUS POWER ......................................................10
POWER CONSUMPTION ....................................................................................11
SIGNAL TIMING REQUIREMENTS .....................................................................12
INTERNAL POWER ON RESET CIRCUIT ..........................................................16
DEVICE DESCRIPTION.......................................................................................18
REGISTER MAP...................................................................................................82
REGISTER BITS BY ADDRESS ..........................................................................84
DIGITAL FILTER CHARACTERISTICS ...............................................................99
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TERMINOLOGY ............................................................................................................ 9
SYSTEM CLOCK TIMING ........................................................................................... 12
AUDIO INTERFACE TIMING – MASTER MODE ........................................................ 12
AUDIO INTERFACE TIMING – SLAVE MODE............................................................ 13
CONTROL INTERFACE TIMING – 3-WIRE MODE .................................................... 14
CONTROL INTERFACE TIMING – 2-WIRE MODE .................................................... 15
INTRODUCTION ......................................................................................................... 18
INPUT SIGNAL PATH ................................................................................................. 19
ANALOGUE TO DIGITAL CONVERTER (ADC).......................................................... 26
INPUT LIMITER / AUTOMATIC LEVEL CONTROL (ALC) .......................................... 30
OUTPUT SIGNAL PATH ............................................................................................. 42
ANALOGUE OUTPUTS............................................................................................... 48
VIDEO BUFFER .......................................................................................................... 59
DIGITAL AUDIO INTERFACES................................................................................... 62
AUDIO SAMPLE RATES ............................................................................................. 67
MASTER CLOCK AND PHASE LOCKED LOOP (PLL) ............................................... 67
LOOPBACK................................................................................................................. 69
COMPANDING............................................................................................................ 69
GENERAL PURPOSE INPUT/OUTPUT...................................................................... 71
OUTPUT SWITCHING (JACK DETECT)..................................................................... 72
CONTROL INTERFACE.............................................................................................. 74
RESETTING THE CHIP .............................................................................................. 75
POWER SUPPLIES .................................................................................................... 75
RECOMMENDED POWER UP/DOWN SEQUENCE .................................................. 75
POWER MANAGEMENT ............................................................................................ 80
TERMINOLOGY .......................................................................................................... 99
DAC FILTER RESPONSES....................................................................................... 100
ADC FILTER RESPONSES....................................................................................... 100
HIGHPASS FILTER................................................................................................... 101
5-BAND EQUALISER ................................................................................................ 102
TABLE OF CONTENTS
PP, Rev 3.2, September 2008
Pre-Production
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