wm8352 Wolfson Microelectronics plc, wm8352 Datasheet - Page 5

• Manufacturer Part Number: wm8352
• Description: Wolfson Audioplus? Stereo Codec With Power Management
• Manufacturer: Wolfson Microelectronics plc

Production Data
13
w
12.1
12.2
12.3
12.4
13.1
13.2
13.3
13.4
13.5
13.6
13.7
13.8
13.9
13.10
13.11
13.12
12.1.1
12.1.2
12.1.3
12.3.1
12.3.2
12.3.3
12.3.4
12.3.5
12.3.6
12.4.1
12.4.2
AUDIO CODEC SUBSYSTEM.....................................................................60
13.4.1
13.4.2
13.4.3
13.4.4
13.4.5
13.4.6
13.4.7
13.5.1
13.5.2
13.6.1
13.7.1
13.7.2
13.7.3
13.7.4
13.7.5
13.8.1
13.8.2
13.9.1
13.9.2
13.9.3
13.9.4
13.10.1
13.10.2
13.10.3
13.10.4
13.12.1
GENERAL DESCRIPTION ............................................................................. 45
CRYSTAL OSCILLATOR................................................................................ 46
CLOCKING AND SAMPLE RATES ................................................................ 47
FLL ................................................................................................................. 55
GENERAL DESCRIPTION ............................................................................. 60
AUDIO PATHS ............................................................................................... 61
ENABLING THE AUDIO CODEC ................................................................... 63
INPUT SIGNAL PATH .................................................................................... 65
ANALOGUE TO DIGITAL CONVERTER (ADC) ............................................. 73
DIGITAL MIXING............................................................................................ 75
DIGITAL TO ANALOGUE CONVERTER (DAC) ............................................. 77
OUTPUT SIGNAL PATH ................................................................................ 81
ANALOGUE OUTPUTS.................................................................................. 85
DIGITAL AUDIO INTERFACE ........................................................................ 93
COMPANDING ............................................................................................... 99
ADDITIONAL CODEC FUNCTIONS............................................................. 101
CLOCKING THE AUDIO CODEC ........................................................................................ 46
CLOCKING THE DC-DC CONVERTERS ............................................................................ 46
INTERNAL RC OSCILLATOR.............................................................................................. 46
SYSCLK CONTROL............................................................................................................. 49
ADC / DAC SAMPLE RATES............................................................................................... 50
BCLK CONTROL ................................................................................................................. 52
ADCLRCLK / DACLRCLK CONTROL ................................................................................. 54
OPCLK CONTROL .............................................................................................................. 55
SLOWCLK CONTROL ......................................................................................................... 55
EXAMPLE FLL CALCULATION ........................................................................................... 58
EXAMPLE FLL SETTINGS .................................................................................................. 59
MICROPHONE INPUTS ...................................................................................................... 65
ENABLING THE PRE-AMPLIFIERS .................................................................................... 66
SELECTING INPUT SIGNALS............................................................................................. 66
CONTROLLING THE PRE-AMPLIFIER GAINS................................................................... 67
MICROPHONE BIASING ..................................................................................................... 68
AUXILIARY INPUTS (IN3L AND IN3R)................................................................................ 68
INPUT MIXERS.................................................................................................................... 70
ADC VOLUME CONTROL ................................................................................................... 74
ADC HIGH-PASS FILTER.................................................................................................... 74
DIGITAL SIDETONE ............................................................................................................ 75
DAC PLAYBACK VOLUME CONTROL ............................................................................... 78
DAC SOFT MUTE AND SOFT UN-MUTE............................................................................ 78
DAC DE-EMPHASIS ............................................................................................................ 79
DAC OUTPUT PHASE AND MONO MIXING....................................................................... 80
DAC STOPBAND ATTENUATION....................................................................................... 80
ENABLING THE ANALOGUE OUTPUTS ............................................................................ 81
OUTPUT MIXERS................................................................................................................ 82
OUT1L AND OUT1R............................................................................................................ 85
OUT2L AND OUT2R............................................................................................................ 87
HEADPHONE OUTPUTS EXTERNAL CONNECTIONS ..................................................... 89
OUT3 AND OUT4 ................................................................................................................ 91
AUDIO DATA FORMATS................................................................................................. 93
AUDIO INTERFACE TDM MODE .................................................................................... 96
TDM DATA FORMATS..................................................................................................... 96
LOOPBACK ..................................................................................................................... 98
HEADPHONE JACK DETECT ....................................................................................... 101
PD, June 2009, Rev 4.1
WM8352
5