STAC9766 Datasheet, PDF (8/97 Pages) Integrated Device Technology – TWO-CHANNEL, 20-BIT, AC’97 2.3 CODECS WITH STEREO MICROPHONE AND MIC/JACK SENSING

STAC9766/9767
TWO-CHANNEL, 20-BIT, AC’97 2.3 CODECS WITH STEREO MICROPHONE AND MIC/JACK SENSING
PC AUDIO
STAC9766/9767 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 2- or
4-speaker arrangements.
The STAC9766/9767 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.
1.3.
STAC9766/9767 Block Diagram
AC-link
SYNC
BIT_CLK
SDATA_OUT
SDATA_IN
RESET#
Multi-Codec
CID0
CID1
EAPD
Variable Sample Rate
20-Bit DACs and
20-Bit ADCs
Figure 1. Block Diagram
4 stereo
Power
sources
Management
PCM out DACs
2 mono
sources
Stereo
Mono
DAC
Digital
DAC
Interface
MIXER
HP_OUT
LINE_OUT
Registers
64x16 bits
ADC
ADC
PCM in ADCs
GPIO1
GPIO0
Analog mixing ^MONO_OUT
and Gain Control
Stereo or
Mono
Mic Boost
0,10,20
or 30 dB
SPDIF
M _{MIC1 (L)}
U
X
MIC2 (R)
1.4.
Key Specifications
• Analog LINE_OUT SNR: 103 dB
• Digital DAC SNR: 95 dB
• Digital ADC SNR: 85 dB
• Full-scale Total Harmonic Distortion: 0.002%
• Crosstalk between Input Channels: -70 dB
• Spurious Tone Rejection: 100 dB
1.5.
Related Materials
• Product Brief
• Reference Designs for MB, AMR, CNR, and ACR applications
• Audio Precision Performance Plots
1.6. Additional Support
Additional product and company information can be obtained by going to the
IDT web site at: www.IDT.com
IDT™
8
TWO-CHANNEL, 20-BIT, AC’97 2.3 CODECS WITH STEREO MICROPHONE AND MIC/JACK SENSING
STAC9766/9767
V 7.4 12/06