WM9707_06 Datasheet, PDF (1/35 Pages) Wolfson Microelectronics plc – AC 97 Revision 2.1 Audio CODEC with SPDIF Output

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WM9707
AC’97 Revision 2.1 Audio CODEC with SPDIF Output
DESCRIPTION
WM9707 is a high-quality stereo audio CODEC compliant
with the AC’97 Revision 2.1 specification. It performs full
duplex 18-bit CODEC functions and supports variable
sample rates from 8 to 48k samples/s and offers excellent
quality with high SNR. Additional features include 3D sound
enhancement, line-level outputs, hardware sample rate
conversion, master/slave mode operation and SPDIF
output.
WM9707 is interchangeable with AC’97 CODECs from
Wolfson and other suppliers. The WM9707 is fully operable
on 3.3V or 5V or mixed 3.3/5V supplies, and is packaged in
the industry standard 48-lead TQFP package with 7mm
body size.
BLOCK DIAGRAM
AC’97 FEATURES
• 3.3V or 5V operation
• 18-bit stereo CODEC
• S/N ratio > 95dB
• Multiple stereo input mixer
• Mono and stereo volume control
• 48-lead TQFP package
• Power management features
• Very low standby power
• Variable rate audio (VRA) support
• Analogue 3D stereo enhancement
• Line level outputs
• Supports Rev. 2.1 specified audio sample rates
and filtering
• Master/slave ID selection
• PC-beep connection when device held reset
• SPDIF digital output
VOL/
MUTE
VOL/
MUTE
KEY:
MONO
STEREO
CD
LINEIN
VIDEO
AUX
PHONE
PCBEEP
MIC1
MIC2
MUX
0dB/
20dB
VOL/
MUTE
VOL/
MUTE
VOL/
MUTE
VOL/
MUTE
VOL/
MUTE
Σ
VOL/
MUTE
3D
VOL/
MUTE
VOL/
MUTE
Σ
MUX
VOL/
MUTE
VOL/
MUTE
STEREO
DAC
SRC
Σ
Σ
w _SERIAL
WM9707
I/F
RECORD
MUX
AND
MUTE
VOL
STEREO
ADC
SRC
MASTER/
SLAVE
SELECT
OSC
LINEOUT
LNLVLOUT
MONOOUT
EAPD
BITCLK
SYNC
SDATAIN
SDATAOUT
RESETB
SPDIF ENABLE
SPDIF
CID
XTLIN
XTLOUT
WOLFSON MICROELECTRONICS plc
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Production Data, June 2006, Rev 4.1
Copyright 2006 Wolfson Microelectronics plc