STAC9271 datasheet(23/223 Pages) IDT

23 / 223 page

STAC9271/9272/9273/9274

10-CHANNEL HIGH DEFINITION AUDIO CODEC

PC AUDIO

IDT™

10-CHANNEL HIGH DEFINITION AUDIO CODEC

STAC9271/9272/9273/9274 V 1.0 MARCH2007

IDT CONFIDENTIAL

3.3.

SPDIF Output

SPDIF Ouput can operate at 44.1 KHz, 48 KHz, 88.2 KHz and 96 KHz, as defined in the Intel High

Definition Audio Specification, with resolutions up to 24 bits. This insures compatibility with all con-

sumer audio gear and allows for convenient integration into home theater systems and media center

PCs.

3.4.

ADAT® Output

ADAT®, or “Lightpipe” is available on all versions of STAC927x family. ADAT® is a single bit stream

optical digital interface for up to 8 channels of uncompressed 24-bit data. Sample rates up to

192 KHz are supported for 2 channels, up to 96 KHz for 4 channels, or up to 48 KHz for 8 channels.

3.5.

Digital Microphone Support

The digital microphone interface permits connection of a digital microphone(s) to the STAC927x fam-

ily via the DMIC0, DMIC1, and DMIC_CLK 3-pin interface. The DMIC0 and DMIC1 signals are inputs

that carry individual channels of digital Mic data to the STAC927x family. In the event that a single

microphone is used, the data is routed to both ADC channels.

The DMIC_CLK output is programmable from 1.176 MHz to 4.704 MHz in 1.176 MHz increments

and is synchronous to the 24 MHz internal clock. The default frequency is 2.352 MHz.

Note: Some Digital Microphone implementations support data on either edge, therefore, an

external mux may not be required.

The STAC927x family supports the digital microphone configurations described in Tables 3 and 4,

and shown in Figures 1, 2 and 3, below.

STAC9271 Datasheet(PDF) 23 Page - Integrated Device Technology