WM9703 Datasheet, PDF(1/30 Page) Wolfson Microelectronics plc

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WM9703 Datasheet, PDF (1/30 Pages) Wolfson Microelectronics plc – AC97 Revision 2.1 Audio Codec

DESCRIPTION

WM9703 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 and line-level outputs. In addition, support is

provided for variable sample rates and accommodation is

made for master/slave mode operation.

WM9703 is interchangeable with ACâ97 codecs from

Wolfson and other suppliers. The WM9703 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.

BLOCK DIAGRAM

WM9703

ACâ97 Revision 2.1 Audio Codec

Production Data, January 2001, Rev 3.4

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¢ Low power implementation

â¢ Very low standby power

ACâ97 REVISION 2.1 FEATURES

â¢ Variable rate audio (VRA) support

â¢ Analogue 3D stereo enhancement

â¢ Line level outputs

â¢ Supports Revision. 2.1 specified modem sample rates

and filtering

â¢ Master/slave ID selection

â¢ PC-beep connection when device held reset

VOL/

MUTE

VOL/

MUTE

KEY:

MONO

STEREO

CD (18,20)

LINEIN (23,24)

VIDEO (16,17)

AUX (14,15)

PHONE (13)

PCBEEP (12)

MIC[1] (21)

MIC[2] (22)

MUX

0dB/

20dB

VOL/

MUTE

VOL/

MUTE

VOL/

MUTE

VOL/

MUTE

VOL/

MUTE

Î£

VOL/

MUTE

VOL/

MUTE

Î£

MUX

VOL/

MUTE

VOL

STEREO

DAC

SRC

(35,36) LINEOUT

(39,41) LNLVLOUT

(37) MONOOUT

(47) EAPD

(6) BITCLK

Î£

SERIAL

(10) SYNC

WM9703

I/F

(8) SDATAIN

(5) SDATAOUT

(11) RESETB

RECORD

MUX

AND

MUTE

VOL

STEREO

ADC

SRC

MASTER/

SLAVE

SELECT

OSC

(45) CID[0]

(46) CID[1]

(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 5176Email: sales@wolfson.co.uk

http://www.wolfson.co.uk

Production Data datasheets contain final

specifications current on publication date.

Supply of products conforms to Wolfson

Microelectronicsâ Terms and Conditions.

ï 2001 Wolfson Microelectronics Ltd.

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