STAC9752A Datasheet, PDF (8/106 Pages) Integrated Device Technology – AC’97 2.3 CODECS WITH STEREO MICROPHONE & UNIVERSAL JACK

STAC9752A/9753A
AC’97 2.3 CODECS WITH STEREO MICROPHONE & UNIVERSAL JACK
PC AUDIO
ume sliders that are implemented in the system, thus improving the end-user's experience with the
PC.
The information in the Extended Paging Registers will also allow for automatic configuration of
microphone inputs, the ability to switch between SPDIF and analog outputs, the routing of the mas-
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 STAC9752A/9753A also offers two 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 STAC9752A/9753A is designed primarily to support stereo (2-speaker) audio. True AC-3 play-
back can be achieved for 6-speaker applications by taking advantage of the multi-CODEC option
available in the AC'97 architecture and supported by the STAC9752A/9753A. Additionally, the
STAC9752A/9753A provides for a stereo enhancement feature, IDT Surround 3D (SS3D). SS3D
provides the listener with several options for improved speaker separation beyond the normal 2- or
4-speaker arrangements.
The STAC9752A/9753A 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
Windows 2K/ME/XP.
SoundBlaster is a registered trademark of Creative Labs.
Windows is a registered trademark of Microsoft Corporation.
1.3. STAC9752A/9753A Block Diagram
Figure 1. STAC9752A/9753A Block Diagram
AC-link
SYNC
BIT_CLK
SDATA_OUT
SDATA_IN
RESET#
Multi-Codec
CID0
CID1
Power
Management
Digital
Interface
Registers
64x16 bits
PCM out DACs
DAC
DAC
MIXER
ADC
ADC
PCM in ADCs
Analog mixing
and Gain Control
M
Left or Right
U
Channel Stereo
Mic Boost
Mic
X
or Mono Mic
0,10, 20, or
Sensing
30 dB
M
Left or Right
U
Channel Stereo
X
or Mono Mic
Universal Jacks^TM
Jack Sharing
Internal Jack Sense
HP_OUT
LINE_OUT
MONO_OUT
Variable Sample Rate
20-Bit DACs and
20-Bit ADCs
Digital PCBEEP
SPDIF Output
Stereo
Mono
IDT™
8
AC’97 2.3 CODECS WITH STEREO MICROPHONE & UNIVERSAL JACK
STAC9752A/9753A
V 1.5 1206