WM9704CFT/V Wolfson Microelectronics plc, WM9704CFT/V Datasheet

WM9704CFT/V

Manufacturer Part Number

WM9704CFT/V

Description

AMC97 Audio and Modem Codec

Manufacturer

Wolfson Microelectronics plc

Datasheet

1.WM9704CFTV.pdf (37 pages)

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DESCRIPTION

WM9704M is a high quality audio codec compliant with the

AC'97 Revision 2.1 specification. The WM9704M has a

proprietary mode which can meet the requirements of an

AMC’97 codec. It performs full duplex 18-bit codec functions

from 8 to 48ksamples/s and offers excellent quality with

high SNR. Features include 3D sound and line-level

outputs. Support is also provided for variable sample rates

and master/slave mode operation.

In modem mode the device supports simultaneous modem

and stereo playback.

WM9704M is interchangeable with AC'97 Codecs from

Wolfson and other suppliers in the basic Revision 2.1 mode.

WM9704M is fully operable with 3.3V or 5V or mixed

3.3/5.0V supplies and is packaged in an industry standard

48-pin TQFP package.

BLOCK DIAGRAM

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

LINEIN (23,24)

VIDEO (16,17)

PCBEEP (12)

PHONE (13)

AUX (14,15)

MIC[1] (21)

MIC[2] (22)

CD (18,20)

MUX

20dB

0dB/

MUTE

KEY:

VOL/

STEREO

MONO

MUTE

VOL/

RECORD

MUTE

VOL/

MUTE

MUX

AND

MUTE

VOL/

VOL

REV. 2.1

SWITCH

MUX

WM9704M

STEREO

FEATURES

APPLICATIONS

STEREO

FRONT

AMC’97 Audio and Modem Codec

ADC

REAR

DAC

Simultaneous modem operation and stereo playback

4 DAC channels, stereo ADC

S/N ratio > 95dB

Variable rate audio and modem support

Analogue 3D stereo enhancement

Line level outputs

Master/slave ID selection

Low power implementation

3.3V or 5V operation

48-pin TQFP package

MUTE

VOL/

SRC

GENERAL IO

SUPPORT

MASTER/

SELECT

SLAVE

SERIAL

OSC

I/F

Production Data datasheets contain final

specifications current on publication date.

Microelectronics’ Terms and Conditions.

Supply of products conforms to Wolfson

Production Data, January 2001, Rev 3.2

(45) CID0

(46) CID1

(43,44,48)

GPIO[1:3]

(2) XTLIN

(3) XTLOUT

(35,36)

LINEOUT

(FRONT)

(39,41)

LINEOUT

(REAR)

(37) MONOOUT

(40) MODE1

(30) MODE0

(47) EAPD

(6) BITCLK

(10) SYNC

(8) SDATAIN

(5) SDATAOUT

(11) RESETB

2001 Wolfson Microelectronics Ltd

WM9704M

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