WM9704CFTSLASHV datasheet(1/35 Pages) WOLFSON

部件名	WM9704CFT/V

功能描述	4-Channel Surround Sound Codec

PDF	35 Pages

Scroll/Zoom	100%

制造商	WOLFSON [Wolfson Microelectronics plc]

网页	http://www.wolfsonmicro.com

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1 / 35 page

WM9704Q

4-Channel Surround Sound Codec

Production Data, January 2001, Rev 2.3

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

Production Data datasheets contain final

specifications current on publication date.

Supply of products conforms to Wolfson

Microelectronics’ Terms and Conditions.

2001 Wolfson Microelectronics Ltd

.

DESCRIPTION

WM9704Q is a high quality audio codec compliant with the

AC’97 Revision 2.1 specification. It performs full duplex

18-bit codec functions from 8 to 48k samples/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. Additionally

the WM9704Q provides two proprietary modes:

4-channel quad mode enables two channels of ADC and

DAC plus an additional two DAC channels as rear outputs.

6-channel mode configures the device to provide external

support for two additional stereo outputs via the GPIO pins.

WM9704Q is interchangeable with AC’97 Codecs from

Wolfson and other suppliers in the basic Revision 2.1 mode.

WM9704Q is fully operable with 3.3V or 5.0V or mixed

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

48-pin TQFP package.

FEATURES

•

4 DAC channels, stereo ADC

•

Balanced mixer architecture

•

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

APPLICATIONS

•

4-channel surround sound solution implemented with 2

additional internal DACs

•

6-channel surround sound supported via connection of a

stereo DAC (WM8725) to GPIO pins

•

Supports 4-channel playback of analogue sources such

as CD

BLOCK DIAGRAM

(2) XTLIN

(3) XTLOUT

Σ

MUX

(37) MONOOUT

(39,41)

LINEOUT

(REAR)

(35,36)

LINEOUT

(FRONT)

Σ

(45) CID0

(46) CID1

(43,44,48)

GPIO[1:3]

(6) BITCLK

(10) SYNC

(8) SDATAIN

(5) SDATAOUT

(11) RESETB

(47) EAPD

(30) MODE0

(40) MODE1

REV. 2.1

SWITCH

REAR

STEREO

DAC

SRC

SERIAL

I/F

KEY:

MONO

STEREO

VOL/

MUTE

VOL/

MUTE

VOL/

MUTE

VOL/

MUTE

VOL/

MUTE

VOL/

MUTE

VOL/

MUTE

VOL/

MUTE

FRONT

STEREO

DAC

SRC

VOL/

MUTE

VOL/

MUTE

VOL/

MUTE

VOL/

MUTE

VOL/

MUTE

VOL/

MUTE

Σ

CD (18,20)

LINEIN (23,24)

VIDEO (16,17)

AUX (14,15)

PHONE (13)

PCBEEP (12)

MIC[1] (21)

MIC[2] (22)

0dB/

20dB

MASTER/

SLAVE

SELECT

GENERAL IO

SUPPORT

OSC

3D

VOL

STEREO

ADC

SRC

MUX

RECORD

MUX

AND

MUTE

SERIAL

I/F

WM9704Q

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