STAC9752 datasheet(8/95 Pages) IDT

8 / 95 page

STAC9752/9753

TWO-CHANNEL, 20-BIT, AC’97 2.3 CODECS WITH HEADPHONE DRIVE, SPDIF OUTPUT MICROPHONE & JACK SENSING

IDT™

STAC9752/9753

REV 3.3 1206

TWO-CHANNEL, 20-BIT, AC’97 2.3 CODECS WITH HEADPHONE DRIVE, SPDIF OUTPUT MICROPHONE & JACK SENSING

ter volume slider to the proper physical output, and SoftEQ configurations. The fully parametric IDT

SoftEQ can be initiated upon jack insertion and sensed impedance levels.

The STAC9752/9753 also offers 2 styles of PC BEEP; Analog and Digital. The digital PC Beep is a

new feature added to the AC’97 Specification Rev 2.3.

The STAC9752/9753 is designed primarily to support stereo (2-speaker) audio. True AC-3 playback

can be achieved for 6-speaker applications by taking advantage of the multi-CODEC option avail-

able in the STAC9752/9753 to support multiple CODECs in an AC'97 architecture. Additionally, the

STAC9752/9753 provides for a stereo enhancement feature, IDT Surround 3D (SS3D). SS3D pro-

vides the listener with several options for improved speaker separation beyond the normal two- or

four-speaker arrangements.

The STAC9752/9753 can be SoundBlaster® and Windows Sound System® compatible when used

with IDT’s WDM driver for Windows 98/2K/ME/XP or with Intel/Microsoft driver included with Win-

dows 2K/ME/XP. SoundBlaster is a registered trademark of Creative Labs. Windows is a registered

trademark of Microsoft Corporation.

1.2.

STAC9752/9753 Block Diagram

Figure 1. Block Diagram

1.3.

Key Specifications

•

Analog LINE_OUT SNR: 90 dB

•

STAC9752 DAC SNR: 89 dB

•

STAC9753 DAC SNR: 84dB

•

STAC9752 ADC SNR: 90 dB

•

STAC9753 ADC SNR: 88 dB

•

Crosstalk between Input Channels: -70 dB

•

Spurious Tone Rejection: 100 dB

HP_OUT

AC-link

Digital

Interface

Registers

64x16 bits

SYNC

BIT_CLK

SDATA_OUT

SDATA_IN

RESET#

Power

Management

DAC

ADC

PCM out DACs

PCM in ADCs

4 stereo

sources

2 mono

sources

MONO_OUT

Mic Boost

0,10,20

or 30 dB

MIC1

Stereo

Mono

MIXER

Analog mixing

and Gain Control

MIC2

LINE_OUT

Multi-Codec

CID0

CID1

SPDIF

Variable Sample Rate

20-Bit DACs and

20-Bit ADCs

EAPD

GPIO0

GPIO1

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