wm8400 Wolfson Microelectronics plc, wm8400 Datasheet - Page 3

• Manufacturer Part Number: wm8400
• Description: Wolfson Audioplustm Hi-fi Audio Codec And Power Management Unit For Mobile Multimedia
• Manufacturer: Wolfson Microelectronics plc

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Pre-Production
DESCRIPTION .......................................................................................................1
FEATURES.............................................................................................................1
APPLICATIONS .....................................................................................................1
BLOCK DIAGRAM .................................................................................................2
TABLE OF CONTENTS .........................................................................................3
PIN CONFIGURATION...........................................................................................5
ORDERING INFORMATION ..................................................................................5
PIN DESCRIPTION ................................................................................................6
TYPICAL CONNECTIONS .....................................................................................8
THERMAL CHARACTERISTICS ...........................................................................9
ABSOLUTE MAXIMUM RATINGS.......................................................................10
RECOMMENDED OPERATING CONDITIONS ...................................................11
SPEAKER POWER DE-RATING CURVE............................................................11
ELECTRICAL CHARACTERISTICS ....................................................................12
TYPICAL POWER CONSUMPTION ....................................................................25
TYPICAL PERFORMANCE DATA.......................................................................29
SIGNAL TIMING REQUIREMENTS .....................................................................31
CODEC POWER ON RESET CIRCUIT ...............................................................37
CONTROL INTERFACE.......................................................................................39
CLOCKING AND SAMPLE RATES .....................................................................42
AUDIO CODEC SUBSYSTEM .............................................................................52
LDO REGULATOR ELECTRICAL CHARACTERISTICS ............................................. 23
DC-DC CONVERTER ELECTRICAL CHARACTERISTICS ......................................... 24
LIN2 / RIN2 TO ADC.................................................................................................... 25
DAC TO LON/LOP AND RON/ROP ............................................................................. 26
DAC TO LOUT/ROUT .................................................................................................. 26
DAC TO SPEAKER...................................................................................................... 27
LOW POWER STATES ............................................................................................... 28
SPEAKER DRIVER PERFORMANCE ......................................................................... 29
HEADPHONE DRIVER PERFORMANCE.................................................................... 29
PSRR PERFORMANCE............................................................................................... 30
SYSTEM CLOCK TIMING............................................................................................ 31
AUDIO INTERFACE TIMING – MASTER MODE ......................................................... 32
AUDIO INTERFACE TIMING – SLAVE MODE ............................................................ 33
AUDIO INTERFACE TIMING – TDM MODE ................................................................ 34
CONTROL INTERFACE TIMING – 2-WIRE MODE ..................................................... 35
CONTROL INTERFACE TIMING – 3-WIRE MODE ..................................................... 36
INTRODUCTION.......................................................................................................... 52
AUDIO SIGNAL PATHS............................................................................................... 53
ENABLING THE AUDIO CODEC ................................................................................. 54
INPUT SIGNAL PATH.................................................................................................. 55
ANALOGUE TO DIGITAL CONVERTER (ADC) .......................................................... 71
DIGITAL MIXING ......................................................................................................... 74
DIGITAL TO ANALOGUE CONVERTER (DAC) .......................................................... 77
OUTPUT SIGNAL PATH.............................................................................................. 81
ANALOGUE OUTPUTS ............................................................................................... 92
GENERAL PURPOSE INPUT/OUTPUT ...................................................................... 97
DIGITAL AUDIO INTERFACE.................................................................................... 114
DIGITAL AUDIO INTERFACE CONTROL ................................................................. 126
TABLE OF CONTENTS
PP, April 2009, Rev 3.0
WM8400
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