stac9752xxtaeb2xr Integrated Device Technology, stac9752xxtaeb2xr Datasheet - Page 45

• Manufacturer Part Number: stac9752xxtaeb2xr
• Description: Two-channel, 20-bit, Ac ?97 2.3 Codecs With Microphone And Jack Sensing
• Manufacturer: Integrated Device Technology

IDT™
TWO-CHANNEL, 20-BIT, AC’97 2.3 CODECS WITH HEADPHONE DRIVE, SPDIF OUTPUT MICROPHONE & JACK SENSING
STAC9752/9753
TWO-CHANNEL, 20-BIT, AC’97 2.3 CODECS WITH HEADPHONE DRIVE, SPDIF OUTPUT MICROPHONE & JACK SENSING
7.1.
7.2.
7.3.
Analog Mixer Input
Mixer Analog Output
SPDIF Digital Mux
The mixer provides recording and playback of any audio sources or output mix of all sources. The
STAC9752/9753 supports the following input sources:
•
•
•
The mixer generates three distinct outputs:
•
•
•
The STAC9752/9753 incorporates a digital output that supports SPDIF formats. A multiplexer deter-
mines which of two digital input streams are used for the digital output conversion process. These
two streams include the PCM_OUT data from the audio controller and the ADC recorded output. The
normal analog LINE_OUT signal can be converted to the SPDIF formats by using the internal ADC
to record the “MIX” output, which is the combination of all analog and all digital sources. In the case
of digital controllers with support for 4 or more channels, the SPDIF output mode can be used to
support compressed 6-channel output streams for delivery to home theater systems. These can be
routed on alternate AC-Link slots to the SPDIF output, while the standard 2-channel output is deliv-
ered as selected by bits D5 and D4 in Register 6E. If the digital controller supports 6 channels, a
SPDIF output with 4 analog channels can also be configured.
If the Digital Controller has independent DMA engines, SPDIF and Analog can be used simulta-
neously and independently.
Pin 48: To Enable SPDIF, use an 1 K
to 10 K
Note: All unused inputs should be tied together and connected to ground through a capacitor (0.1 F
Note: The MIC should be tied to ground through a separate 0.1 F capacitor.
any mono or stereo source
mono or stereo mix of all sources
2-channel input w/mono output reference (microphone or stereo mix)
A stereo mix of all sources for output to the LINE_OUT
A stereo mix of all sources for output to HP_OUT
A mono, microphone only, or mix of all sources, for MONO_OUT
suggested).
external pullup. Do NOT leave Pin 48 floating.
45
to 10 K
external pulldown. To Disable SPDIF, use an 1 K
STAC9752/9753
REV 3.3 1206