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AD1984 Datasheet(PDF) 7 Page - Analog Devices

Part No. AD1984
Description  High Definition Audio SoundMAX Codec
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Maker  AD [Analog Devices]
Homepage  http://www.analog.com
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AD1984 Datasheet(HTML) 7 Page - Analog Devices

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AD1984
Rev. 0
|
Page 7 of 20
|
January 2007
HD–AUDIO LINK SPECIFICATION
High-definition audio signals comply with the High-definition
Audio specification. Please refer to these specifications at:
http://www.intel.com/standards/hdaudio/
POWER DOWN STATES
Parameter
IDVDD Typ
IAVDD Typ
Unit
Function node in D0, all nodes active
58
31
mA
Function node in D31
1 Function node D3 state powers down all nodes except for the VREF, Mixer and MIC_BIAS nodes which have independent power controls. VREF should be kept active when
background functions such as jack presence detection or analog pass-through are required. Mixer should be kept active when analog pass-through is required. MIC_BIAS
can be disabled if microphones are not in use in the power-down state.
21
2
mA
Codec in RESET
33mA
Individual block power savings
DAC pair powered down saves (each)
ADC pair powered down saves (each)
Mixer power control (and associated amps) saves
DM_FLT pair powered down saves (each)
DM_CLK powered down saves2
MIC_BIAS powered down saves3
2 Test conditions: 30 pF load, 2.0 MHz frequency, 3.3 V A
VDD.
3 Powering down the MIC_BIAS powers down all port MIC_BIAS pins. This disables all microphone bias circuits set to 100% or 50%, setting them to the Hi-Z state. The
0
Ω and Hi-Z states remain unaffected by the MIC_BIAS power state.
6
5
0
5
0
0
5
3
2
0
1
0.5
mA
mA
mA
mA
mA
mA


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