STAC9752A Datasheet, PDF (45/106 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
The AC-Link input slots dedicated to audio are defined as follows:
Table 15. AC-Link Input Slots Dedicated To Audio
Slot
Name
Description
3
PCM L ADC record
20-bit PCM data from left input
4
PCM R ADC record
20-bit PCM data from right inputs
6
Dedicated Microphone ADC
20-bit PCM data from optional 3rd ADC input
7
Vendor reserved
Vendor specific (enhanced input for docking, array mic, etc.)
8
Vendor reserved
Vendor specific (enhanced input for docking, array mic, etc.)
9
Vendor reserved
Vendor specific (enhanced input for docking, array mic, etc.)
12
Audio Interrupt
Provides optional interrupt capability for Audio CODEC (not usable
when a modem is present)
Note: The ADC can be assigned to slots 3&4, 6&9, 7&8, or 10&11.
Table 16. Audio Interrupt Slot Definitions
Bit
19-1
0
Description
Reserved (Audio CODEC will return zeros in bits 19-1)
Optional: Assertion = 1 will cause interrupt to be propagated to Audio controller system interrupt. See
register 24h definition for enabling mechanism.
IDT™
45
AC’97 2.3 CODECS WITH STEREO MICROPHONE & UNIVERSAL JACK
STAC9752A/9753A
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