STAC9766 IDT [Integrated Device Technology], STAC9766 Datasheet - Page 96

• Manufacturer Part Number: STAC9766
• Manufacturer: IDT [Integrated Device Technology]

17.REVISION HISTORY
IDT™
TWO-CHANNEL, 20-BIT, AC’97 2.3 CODECS WITH STEREO MICROPHONE AND MIC/JACK SENSING
Revision
STAC9766/9767
TWO-CHANNEL, 20-BIT, AC’97 2.3 CODECS WITH STEREO MICROPHONE AND MIC/JACK SENSING
7.1
7.2
7.3
7.4
03 November 2006
October 2003
Dec 2006
Date
Removed BIT_CLK as an input option from clocking table, it was incorrectly included in 3-1 version
Added CD_GND elaboration note on connection diagram, pin list and pin out diagrams:
Released in IDT format.
corrected orderable part number
History not included in Datasheet
“The CD_GND signal is an AC signal return for the two CD input channels. It is normally biased
at about 2.5V. The name of the pin in the AC’97 specification is CD_GND, and this has confused
many designers. It should not have any DC path to GND. Connecting the CD_GND signal
directly to ground will change the internal bias of the entire CODEC, and cause significant
distortion. If there is no analog CD input, then this pin can be No-Connect.”
96
Description of Change
STAC9766/9767
PC AUDIO
V 7.4 12/06