92hd89c Integrated Device Technology, 92hd89c Datasheet - Page 18

• Manufacturer Part Number: 92hd89c
• Description: Six Channel Hd Audio Codec
• Manufacturer: Integrated Device Technology

92HD89C
Six channel HD Audio codec optimized for low power
©2009 INTEGRATED DEVICE TECHNOLOGY, INC.
IDT™ CONFIDENTIAL
2.2.
2.3.
2.4.
2.5.
Analog Mixer
Input Multiplexers
ADC Multiplexers
Power Management
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 output of the mixer may be
sent to the ADC where the ADC record gain can adjust the volume. If the output of the mixer is sent
to an analog port, then a separate volume control is provided to adjust the output volume.
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The codec implements 4 port input multiplexers. These multiplexers allow a preselection of one of
four possible inputs:
The 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
these possible inputs:
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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.
inMux0
inMux1
inMux2
inMux3
CD In
Port A
Port B
Port C
Port D
Port E
Port F
Port G
Mixer Output
DMIC 0
CDIn
Inport0_Mux
Port A
Port B
Port D
Port F
Inport1_Mux
Table 6. Input Multiplexers
Port A
Port E
Port G
18
Inport2_Mux
Port C
Port G
Port B
Inport3_mux
(6ch only)
DAC 0
DAC 1
DAC 2
V 0.91 08/09
92HD89C