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WM8281 Datasheet(PDF) 2 Page - Cirrus Logic

Part # WM8281
Description  Low Power Audio System with Ambient Noise Cancellation and Echo Cancellation
PDF  392 Pages
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Manufacturer  CIRRUS [Cirrus Logic]
Direct Link  http://www.cirrus.com
Logo CIRRUS - Cirrus Logic

WM8281 Datasheet(HTML) 2 Page - Cirrus Logic

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WM8281
2
Rev 4.0
BLOCK DIAGRAM
Digital Core
Stereo Adaptive RX ANC
RX Speech Clarity
Advanced Multi-Mic TX Noise Reduction
Advanced Multi-Mic Acoustic Echo Cancellation
Wind Noise Detection
Multi-band Compression
Virtual Surround Sound (VSS)
5-Band Equaliser (EQ)
Dynamic Range Control (DRC)
Low Pass / High Pass Filter (LHPF)
Asynchronous Sample Rate Conversion
Automatic Sample Rate Detection
Advanced Programmable Multi-Core DSP
Tone Generator
Noise Generator
PWM Signal Generator
Haptic Control Signal Generator
Digital Audio
Interface AIF1
Digital Audio
Interface AIF2
Digital Audio
Interface AIF3
Ambient Noise Cancellation (ANC)
Stereo Anti-Noise outputs
ADC
ADC
Digital Mic
Interface
ADC
ADC
Digital Mic
Interface
ADC
ADC
Digital Mic
Interface
IN1LN/DMICCLK1
IN1LP
IN1RN/DMICDAT1
IN1RP
IN2LN/DMICCLK
IN2LP
IN2RN/DMICDAT2
IN2RP
IN3LN/DMICCLK3
IN3LP
IN3RN/DMICDAT3
IN3RP
+
+
SPKOUTLP
SPKOUTLN
SPKOUTRP
SPKOUTRN
DAC
DAC
+
+
SPKCLK2
SPKDAT2
+
+
SPKCLK1
SPKDAT1
+
+
HPOUT3L
HPOUT3R
DAC
DAC
+
+
HPOUT2L
HPOUT2R
DAC
DAC
+
+
HPOUT1L
HPOUT1R
DAC
DAC
HPOUT1FB1/MICDET2
HPOUT2FB
HPOUT3FB
SPKGNDRN
SPKGNDRP
SPKVDDR
SPKGNDLN
MICBIAS
Generators
Charge Pump 2
Charge Pump 1
LDO 2
MICBIAS1
MICBIAS2
MICBIAS3
LDO 1
JTAG Test Access
Reference
Generator
AVDD
AGND
VREFC
SLIM Bus
Interface
MICDET1/HPOUT1FB2
HPDETL
HPDETR
External Accessory
Detect
JACKDET
Control Interface
DMICCLK4
DMICDAT4
Digital Mic
Interface
PDM Driver
PDM Driver
GPIO
SPKTST1
SPKTST2
SUBGND
Stereo ANC inputs
AIFnBCLK
AIFnLRCLK
SLIMCLK
MCLK2
MCLK1
SYSCLK
Clocking
Control
2 x FLL
ASYNCCLK
AEC (Echo Cancellation) Loopback
SPKGNDLP
SPKVDDL
-1
-1



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