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WM9707

AC鈥?7 Revision 2.1 Audio Codec with SPDIF Output

Advanced Information, January 2001, Rev 2.2

DESCRIPTION

WM9707 is a high-quality stereo audio codec compliant with

the AC鈥?7 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鈥?7 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-pin TQFP package with 7mm body

size.

AC鈥?7 FEATURES

鈥?/div>

3.3V or 5V operation

18-bit stereo codec

S/N ratio > 95dB

Multiple stereo input mixer

Mono and stereo volume control

48-pin 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 modem sample rates

and filtering

Master/slave ID selection

PC-beep connection when device held reset

SPDIF digital output

BLOCK DIAGRAM

VOL/

MUTE

VOL/

MUTE

KEY:

MONO

STEREO

VOL/

MUTE

VOL/

MUTE

危

VOL/

MUTE

VOL/

MUTE

(35,36) LINEOUT

(39,41) LNLVLOUT

危

MUX

VOL/

MUTE

(37) MONOOUT

STEREO

DAC

SRC

(47) EAPD

3D

VOL/

MUTE

VOL/

MUTE

VOL/

MUTE

VOL/

MUTE

VOL/

MUTE

(6) BITCLK

危

WM9707

SERIAL

I/F

(10) SYNC

(8) SDATAIN

(5) SDATAOUT

(11) RESETB

(44) SPDIF ENABLE

(48) SPDIF

CD (18,20)

LINEIN (23,24)

VIDEO (16,17)

AUX (14,15)

PHONE (13)

PCBEEP (12)

MIC1 (21)

MUX

MIC2 (22)

VOL

RECORD

MUX

AND

MUTE

0dB/

20dB

STEREO

ADC

SRC

MASTER/

SLAVE

SELECT

(45) CID

OSC

(2) XTLIN

(3) XTLOUT

WOLFSON MICROELECTRONICS LTD

Lutton Court, Bernard Terrace, Edinburgh, EH8 9NX, UK

Tel: +44 (0) 131 667 9386

Fax: +44 (0) 131 667 5176

Email: sales@wolfson.co.uk

http://www.wolfson.co.uk

Advanced Information

data sheets contain

preliminary data on new products in the

preproduction phase of development.

Supplementary data will be published at a

later date.

餂?001

Wolfson Microelectronics Ltd

.

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