IDT92HD81B1X5NLGXYCX8 IDT, Integrated Device Technology Inc, IDT92HD81B1X5NLGXYCX8 Datasheet - Page 19

• Manufacturer Part Number: IDT92HD81B1X5NLGXYCX8
• Manufacturer: IDT, Integrated Device Technology Inc

Specifications of IDT92HD81B1X5NLGXYCX8

• Lead Free Status / RoHS Status: Compliant

92HD81
SINGLE CHIP PC AUDIO SYSTEM, CODEC+SPEAKER AMPLIFIER+CAPLESS HP+LDO
©2009 INTEGRATED DEVICE TECHNOLOGY, INC.
IDT™ CONFIDENTIAL
2.3.
2.4.
2.5.
Analog Mixer
ADC Multiplexers
Power Management
Digital Microphone inputs
SPDIF Outputs
Function
DAC0 Output: When selected (by using port connection list), both DAC0 outputs are summed
together.
DAC1 Output: When selected (by using port connection list), both DAC1 outputs are summed
together.
Mixer Output: When selected (by using port connection list), both mixer outputs are summed
together.
The stereo inputs are scaled by -6dB and then summed to provide an output that is the average of
the two inputs. The full scale output at mono out is designed to be about 0dBV. It is not possible to
adjust to a +3dBV output level.
The mixer supports independent gain (-34.5 to +12dB in 1.5dB steps) on each input as well as inde-
pendent mutes on each input. The following inputs are available:
The 92HD81 codec implements 2 ADC input multiplexers. These multiplexers incorporate the ADC
record gain function (0 to +22.5dB gain in 1.5dB steps) as an output amp and allow a preselection of
one of 7 possible inputs:
The HD Audio specification defines power states, power state widgets, and power state verbs.
Power management is implemented at several levels. The Audio Function Group (AFG) , all con-
verter widgets, and all pin complexes support the power state verb F05/705. Converter widgets are
active in D0 and inactive in D1-D3.
The following table describes what functionality is active in each power state.
DAC
ADC
D2S
•
•
•
•
•
•
•
•
•
•
•
Port A
Port C
Port E
Port F
Port A
Port C
Port E
Port F
Mixer Output
DMIC 0
DMIC 1
On
On
On
On
On
D0
Table 5. Power Management
D1
Off
Off
Off
On
Off
1
19
On(idle)
Off
Off
Off
Off
D2
On(idle)
Off
Off
Off
D3
Off
5
D3cold
Off
Off
Off
Off
Off
Specific D4
Vendor
Off
Off
Off
Off
Off
SpecificD5
V 0.987 11/09
Vendor
Off
Off
Off
Off
Off
92HD81