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DESCRIPTION
The WM8569 is a stereo audio codec ideal for DVD, PVR,
LCD-TV and automotive applications. Independent ADC
and DAC clocking permits separate record and playback
sampling rates.
A stereo 24-bit multi-bit sigma delta DAC with oversampling
and digital interpolation filters provides the output signal.
Digital audio input word lengths from 16-24 bits and
sampling rates from 8kHz to 192kHz are supported.
A stereo 24-bit multi-bit sigma delta ADC is used. Digital
audio output word lengths from 16-24 bits and sampling
rates from 32kHz to 96kHz are supported. The DAC and
ADC support independent sampling rates.
The audio data interface supports I
2
S, left justified, right
justified and DSP digital audio formats.
The device is controlled via a 3-wire serial interface. The
interface provides access to all features including volume
controls, mutes, de-emphasis and power management
facilities. A hardware control interface allows access to a
limited feature set. The WM8569 is available in a 28-lead
SSOP.
WM8569
24-bit, 192kHz Stereo CODEC with Volume Control
FEATURES
•
Audio Performance
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103dB SNR (‘A’ weighted @ 48kHz) DAC
−
DAC Sampling Frequency: 8kHz – 192kHz
−
100dB SNR (‘A’ weighted @ 48kHz) ADC
−
ADC Sampling Frequency: 32kHz – 96kHz
Independent Sampling Rates for ADC and DAC
3-wire SPI Serial or Hardware Control Interface
Audio Mute and De-Emphasis Functions
Programmable Audio Data Interface Modes
−
16/20/24/32 bit Word Lengths
−
I
2
S, Left, Right Justified or DSP
2.7V to 5.5V Analogue Supply
2.7V to 3.6V Digital Supply
28-lead SSOP Package
•
•
•
•
•
•
•
APPLICATIONS
•
•
•
•
•
DVD Recorder
Personal Video Recorder
PC Sound Card
Automotive Audio
LCD-TV
BLOCK DIAGRAM
WOLFSON MICROELECTRONICS plc
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Product Preview, December 2005, Rev 1.1
Copyright
2005
Wolfson Microelectronics plc
WOLFSON [ WOLFSON MICROELECTRONICS PLC ]
