AD1987
HD AUDIO LINK SPECIFICATION
HD Audio signals comply with the High Definition Audio Spec-
ifications. 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
66
41
mA
Function Node in D3
21
1.2
mA
Codec in RESET
3
3
mA
Individual Block Power Savings
DAC Pair Powered Down Saves (Each)
ADC Pair Powered Down Saves (Each)
Mixer Power Control (And Associated Amps) Saves
MIC_BIAS Powered Down Saves1, 2
6
5
mA
5.3
3.2
mA
0
2
mA
0
0.5
mA
1 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 high-Z state. The
E 0 Ω and high-Z states remain unaffected by the MIC_BIAS power state.
OBSOLET 2 Test conditions: 30 pF load, 2.0 MHz frequency, 3.3 V AVDD.
Rev. A | Page 7 of 20 | March 2008