WM8903LGEFK/RV Wolfson Microelectronics, WM8903LGEFK/RV Datasheet - Page 4

• Manufacturer Part Number: WM8903LGEFK/RV
• Description: Audio CODECs ULTRA LOW PWR HI FI CODEC
• Manufacturer: Wolfson Microelectronics

Specifications of WM8903LGEFK/RV

• Audio Codec Type: Stereo Codec
• No. Of Adcs: 2
• No. Of Dacs: 2
• No. Of Input Channels: 6
• No. Of Output Channels: 8
• Adc / Dac Resolution: 24bit
• Sampling Rate: 96kHz
• Operating Temperature Range: -40°C To +85°C
• Rohs Compliant: Yes
• Adcs / Dacs Signal To Noise Ratio: 96dB
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

WM8903
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DIGITAL MICROPHONE INTERFACE ......................................................................... 40
ANALOGUE-TO-DIGITAL CONVERTER (ADC) .......................................................... 42
DYNAMIC RANGE CONTROL (DRC) .......................................................................... 46
DIGITAL MIXING ......................................................................................................... 53
DIGITAL-TO-ANALOGUE CONVERTER (DAC) .......................................................... 56
OUTPUT SIGNAL PATH .............................................................................................. 63
ANALOGUE OUTPUTS ............................................................................................... 75
REFERENCE VOLTAGES AND MASTER BIAS .......................................................... 77
POP SUPPRESSION CONTROL................................................................................. 79
CHARGE PUMP ........................................................................................................... 80
DC SERVO .................................................................................................................. 81
DIGITAL AUDIO INTERFACE ...................................................................................... 84
DIGITAL AUDIO INTERFACE CONTROL ................................................................... 90
MICBIAS CURRENT DETECT FILTERING ................................................................................................................. 38
MICROPHONE HOOK SWITCH DETECTION ............................................................................................................ 39
ADC DIGITAL VOLUME CONTROL ............................................................................................................................ 42
HIGH-PASS FILTER (HPF) ......................................................................................................................................... 45
ADC OVERSAMPLING RATIO (OSR) ......................................................................................................................... 46
COMPRESSION/LIMITING CAPABILITIES ................................................................................................................. 46
GAIN LIMITS ............................................................................................................................................................... 48
DYNAMIC CHARACTERISTICS .................................................................................................................................. 49
ANTI-CLIP CONTROL ................................................................................................................................................. 50
QUICK RELEASE CONTROL ...................................................................................................................................... 50
GAIN SMOOTHING ..................................................................................................................................................... 51
INITIALISATION .......................................................................................................................................................... 52
DIGITAL MIXING PATHS ............................................................................................................................................ 53
DAC INTERFACE VOLUME BOOST ........................................................................................................................... 54
DIGITAL SIDETONE ................................................................................................................................................... 55
DAC DIGITAL VOLUME CONTROL ............................................................................................................................ 56
DAC SOFT MUTE AND SOFT UN-MUTE ................................................................................................................... 59
DAC MONO MIX .......................................................................................................................................................... 60
DAC DE-EMPHASIS.................................................................................................................................................... 60
DAC SLOPING STOPBAND FILTER ........................................................................................................................... 61
DAC BIAS CONTROL .................................................................................................................................................. 61
DAC OVERSAMPLING RATIO (OSR) ......................................................................................................................... 62
OUTPUT SIGNAL PATHS ENABLE ............................................................................................................................ 64
HEADPHONE / LINE OUTPUT SIGNAL PATHS ENABLE .......................................................................................... 65
OUTPUT PGA BIAS CONTROL .................................................................................................................................. 68
OUTPUT DRIVERS BIAS CONTROL .......................................................................................................................... 68
OUTPUT MIXER CONTROL ........................................................................................................................................ 69
OUTPUT VOLUME CONTROL .................................................................................................................................... 71
HEADPHONE OUTPUTS – HPOUTL AND HPOUTR .................................................................................................. 75
LINE OUTPUTS – LINEOUTL AND LINEOUTR .......................................................................................................... 75
DIFFERENTIAL LINE OUTPUTS – LON/LOP AND RON/ROP ................................................................................... 75
EXTERNAL COMPONENTS FOR GROUND-REFERENCED OUTPUTS ................................................................... 76
DISABLED INPUT / OUTPUT CONTROL .................................................................................................................... 79
DIFFERENTIAL LINE OUTPUT DISCHARGE CONTROL ........................................................................................... 79
MASTER AND SLAVE MODE OPERATION ............................................................................................................... 84
OPERATION WITH TDM ............................................................................................................................................. 85
BCLK FREQUENCY .................................................................................................................................................... 86
AUDIO DATA FORMATS (NORMAL MODE) ............................................................................................................... 86
AUDIO DATA FORMATS (TDM MODE) ...................................................................................................................... 88
BCLK AND LRCLK CONTROL .................................................................................................................................... 91
COMPANDING ............................................................................................................................................................ 93
PD, Rev 4.0, September 2010
Production Data
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