STAC9758 Datasheet, PDF (61/119 Pages) Integrated Device Technology – HIGH-PERFORMANCE 6-CHANNEL AC’97 2.3 CODEC WITH UNIVERSAL JACKS

STAC9758/9759
HIGH-PERFORMANCE 6-CHANNEL AC’97 2.3 CODEC WITH UNIVERSAL JACKS™
PC AUDIO
select pin 16 and 17, this will set up an extra Line In that can be used as Video In. Line In will still be
available using the standard pins 23 and 24, and its volume will be controlled by Register 02h.
• Use the same pins for Video (pins 16&17)
• Use the Universal Jack Input Select Register (66h), bits D10:8 = 000b to select Line In on
Pin 16/17
• Volume will be controlled by Register 10h (as Video is acting as Line In)
• The Line In slider now will control Video.
• Recording is done by using the Line In Record function in the Record Select Register (1Ah), by
setting the left and/or right channel input select to Line In
• Left Line In Select D10:D8 = 100b
• Right Line In Select D2:D0 = 100b
• Unfortunately, the STAC9758 cannot mix Line In and Video at the same time
Using Pins 16 and 17 as Line In for Video is the easiest method to use Video In on the STAC9758.
The alternative is to use Pins 16&17 as MIC, and, using the registers listed above, simple select the
bit values to the desired input source.
IDT™
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HIGH-PERFORMANCE 6-CHANNEL AC’97 2.3 CODEC WITH UNIVERSAL JACKS™
STAC9758/9759
V 1.2 1206