stac9272 Integrated Device Technology, stac9272 Datasheet - Page 23

• Manufacturer Part Number: stac9272
• Description: 10-channel High Definition Audio Codec
• Manufacturer: Integrated Device Technology

IDT™
STAC9271/9272/9273/9274
10-CHANNEL HIGH DEFINITION AUDIO CODEC
3.3.
3.4.
3.5.
10-CHANNEL HIGH DEFINITION AUDIO CODEC
SPDIF Output
ADAT
Digital Microphone Support
®
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.
ADAT
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.
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.
The STAC927x family supports the digital microphone configurations described in Tables 3 and 4,
and shown in Figures 1, 2 and 3, below.
Note: Some Digital Microphone implementations support data on either edge, therefore, an
external mux may not be required.
®
, or “Lightpipe” is available on all versions of STAC927x family. ADAT
IDT CONFIDENTIAL
23
STAC9271/9272/9273/9274 V 1.0 MARCH2007
®
is a single bit stream
PC AUDIO