WM8581SEFT Wolfson Microelectronics Ltd., WM8581SEFT Datasheet
WM8581SEFT
Manufacturer Part Number
WM8581SEFT
Description
Multichannel Codec with S/pdif Transceiver
Manufacturer
Wolfson Microelectronics Ltd.
Datasheet
1.WM8581SEFT.pdf
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DESCRIPTION
The WM8581 is a multi-channel audio CODEC with S/PDIF
transceiver. The WM8581 is ideal for DVD and surround
sound processing applications for home hi-fi, automotive
and other audiovisual equipment.
Integrated into the device is a stereo 24-bit multi-bit sigma
delta ADC with support for digital audio output word lengths
from 16-bit to 32-bit, and sampling rates from 8kHz to
192kHz.
Also included are four stereo 24-bit multi-bit sigma delta
DACs,
interpolation filter. Digital audio input word lengths from 16-
bits to 32-bits and sampling rates from 8kHz to 192kHz are
supported. Each DAC channel has independent digital
volume and mute control.
Two independent audio data interfaces support I
Justified, Right Justified and DSP digital audio formats.
Each audio interface can operate in either Master Mode or
Slave Mode.
The S/PDIF transceiver is IEC-60958-3 compatible and
supports frame rates from 32k/s to 192k/s. It has four
multiplexed inputs and one output. Status and error
monitoring is built-in and results can reported over the serial
interface or via GPO pins. S/PDIF Channel Block
configuration is also supported.
The device has two PLLs that can be configured
independently to generate two system clocks for internal or
external use.
Device control and setup is via a 2-wire or 3-wire (SPI
compatible) serial interface. The serial interface provides
access to all features including channel selection, volume
controls, mutes, de-emphasis, S/PDIF control/status, and
power management facilities. Alternatively, the device has a
Hardware Control Mode where device features can be
enabled/disabled using selected pins.
The device is available in a 48-lead TQFP package.
WOLFSON MICROELECTRONICS plc
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2
S, Left
FEATURES
APPLICATIONS
Digital TV
DVD Players and Receivers
Surround Sound AV Processors and Hi-Fi systems
Automotive Audio
Mutli-channel CODEC with 4 Stereo DACs and 1 Stereo
ADC
Integrated S/PDIF / IEC-60958-3 transceiver
Audio Performance
DAC Sampling Frequency: 8kHz – 192kHz
ADC Sampling Frequency: 8kHz – 192kHz
Independent ADC and DAC Sample Rates
2 and 3-Wire Serial Control Interface with readback, or
Hardware Control Interface
GPO pins allow visibility of user selected status flags
Programmable Audio Data Interface Modes
Four independent stereo DAC outputs with independent
digital volume controls
Two Independent Master or Slave Audio Data Interfaces
Flexible Digital Interface Routing with Clock Selection
Control
2.7V to 5.5V Analogue, 2.7V to 3.6V Digital Supply
Operation
48-lead TQFP Package
103dB SNR (‘A’ weighted @ 48kHz) DAC
-90dB THD (48kHz) DAC
100dB SNR (‘A’ weighted @ 48kHz) ADC
-90dB THD (48kHz) ADC
I
16/20/24/32 bit Word Lengths
2
S, Left, Right Justified or DSP
Copyright
Product Preview, March 2006, Rev 1.0
2006 Wolfson Microelectronics plc
WM8581
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