92hd73c Integrated Device Technology, 92hd73c Datasheet - Page 17

• Manufacturer Part Number: 92hd73c
• Description: Four Channel Hd Audio Codec
• Manufacturer: Integrated Device Technology

SIX CHANNEL HD AUDIO CODEC, PREMIUM WLP 3/4 COMPLIANT
92HD73C
SIX CHANNEL HD AUDIO CODEC, PREMIUM WLP 3/4 COMPLIANT
1.4.7.
1.4.8.
1.4.9.
Digital Microphone inputs
ADC Volume Control
SPDIF Outputs
Analog Clocks
SPDIF Inputs
VrefOut Pins
GPIO pins
Function
Ref ADC
DAC
ADC
D2S
Input Multiplexers
92HD73C implements 4 port input multiplexers. These multiplexers allow a preselection of one of
four possible inputs:
ADC Multiplexers
92HD73C 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
12 possible inputs:
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Power Management
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) and all con-
verter widgets support the power state verb F05/705 (as well as the pin widget associated with pin
47.) Converter widgets are active in D0 and inactive in D1-D3.
The following table describes what functionality is active in each power state supported by the AFG.
DMIC 0
DMIC 1
Mixer output
CD input
Ports A - H
Inport0_Mux
Port A
Port B
Port D
Port F
Table 7. Function state vs. AFG power state
Inport1_Mux
Table 6. Input Multiplexers
Port G
Port H
Port A
Port E
D0
On
On
On
On
On
On
On
On
On
On
On
17
Inport2_Mux
Port G
Port B
Port C
Port H
D1
Off
Off
Off
Off
Off
Off
Off
Off
Off
On
On
1
Inport3_mux
DAC 0
DAC 1
DAC 2
DAC 3
On
D2
Off
Off
Off
Off
Off
Off
Off
Off
Off
Off
92HD73C
D3
Off
Off
Off
Off
Off
Off
Off
Off
Off
On
Off
vendor specific
PC AUDIO
V 1.0 03/08
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