WM9707 Datasheet, PDF(1/30 Page) Wolfson Microelectronics plc – AC97 Revision 2.1 Audio Codec with Spdif Output

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WM9707 Datasheet, PDF (1/30 Pages) Wolfson Microelectronics plc – AC97 Revision 2.1 Audio Codec with Spdif Output

WM9707

ACâ97 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 ACâ97 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 ACâ97 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.

ACâ97 FEATURES

â¢ 3.3V or 5V operation

â¢ 18-bit stereo codec

â¢ S/N ratio > 95dB

â¢ Multiple stereo input mixer

â¢ Mono and stereo volume control

â¢ 48-pin TQFP package

â¢ Power management features

â¢ Very low standby power

â¢ Variable rate audio (VRA) support

â¢ Analogue 3D stereo enhancement

â¢ Line level outputs

â¢ Supports Rev. 2.1 specified modem sample rates

and filtering

â¢ Master/slave ID selection

â¢ PC-beep connection when device held reset

â¢ SPDIF digital output

BLOCK DIAGRAM

VOL/

MUTE

VOL/

MUTE

KEY:

MONO

STEREO

CD (18,20)

LINEIN (23,24)

VIDEO (16,17)

AUX (14,15)

PHONE (13)

PCBEEP (12)

MIC1 (21)

MIC2 (22)

MUX

0dB/

20dB

VOL/

MUTE

VOL/

MUTE

VOL/

MUTE

VOL/

MUTE

VOL/

MUTE

Î£

VOL/

MUTE

VOL/

MUTE

VOL/

MUTE

Î£

MUX

VOL/

MUTE

VOL/

MUTE

STEREO

DAC

SRC

Î£

WM9707

SERIAL

I/F

RECORD

MUX

AND

MUTE

VOL

STEREO

ADC

SRC

MASTER/

SLAVE

SELECT

OSC

(35,36) LINEOUT

(39,41) LNLVLOUT

(37) MONOOUT

(47) EAPD

(6) BITCLK

(10) SYNC

(8) SDATAIN

(5) SDATAOUT

(11) RESETB

(44) SPDIF ENABLE

(48) SPDIF

(45) CID

(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.

ï2001 Wolfson Microelectronics Ltd.

▷