ad1884 Analog Devices, Inc., ad1884 Datasheet - Page 7

• Manufacturer Part Number: ad1884
• Description: High Definition Audio Soundmax Codec
• Manufacturer: Analog Devices, Inc.

POWER DOWN STATES
1
2
Parameter
Function Node in D0, All Nodes Active
Function Node in D3
Codec in RESET
Individual Block Power Savings
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
Function node D3 state powers down all nodes except for the V
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.
0
DAC Pair Powered Down Saves (Each)
ADC Pair Powered Down Saves (Each)
Mixer Power Control (And Associated Amps) Saves
MIC_BIAS Powered Down Saves
and Hi-Z states remain unaffected by the MIC_BIAS power state.
1
2
Rev. 0 | Page 7 of 16 | January 2007
REF
, Mixer and MIC_BIAS nodes which have independent power controls. V
ID
58
21
3
6
5
0
0
VDD
Typ
IA
31
2
3
5
3
2
0.5
VDD
Typ
REF
should be kept active when
Unit
mA
mA
mA
mA
mA
mA
mA
AD1884