92HD700 Datasheet, PDF (19/181 Pages) Integrated Device Technology – 10-CHANNEL HIGH DEFINITION AUDIO CODEC

92HD700
10-CHANNEL HIGH DEFINITION AUDIO CODEC
PC AUDIO
Bins Return Hex Code
000b
0064h
001b
012Ch
010b
028Ah
011b
03E8h
100b
07D0h
101b
0BB8h
110b
2710h
111b
2710h
Table 1. Impedance Sense Levels
Impedance Level (Ohms)
General Device Detected
Impedance < 300
Passive Speakers, Headset Speakers
Impedance = 300 +/- 25%
Some Headset Speakers
300 > Impedance < 1275
Some Microphones
Impedance = 1275 +/- 25%
Microphones
1275 > Impedance < 2000
Microphones
Impedance = 2000 +/- 25%
Amplified Speakers
> 2000
Amplified Speakers, Line In
> 2000
Amplified Speakers, Line In
3.2. SPDIF Input
SPDIF_IN can operate at 44.1 KHz, 48 KHz or 96 KHz and implements internal Jack Detect.
A sophisticated digital PLL allows automatic rate detection and accurate data recovery. The ability to
directly accept consumer SPDIF voltage levels eliminates the need for costly external receiver ICs.
Advanced features such as record slot select and SPDIF_IN routing to the DAC allows for simulta-
neous record and play.
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.
IDT™ 10-CHANNEL HIGH DEFINITION AUDIO CODEC
19
IDT CONFIDENTIAL
92HD700
V 1.2 112006