92hd89d Integrated Device Technology, 92hd89d Datasheet - Page 21

• Manufacturer Part Number: 92hd89d
• Description: Eight Channel Hd Audio Codec Low Power Optimized For Ecr15b And Eup
• Manufacturer: Integrated Device Technology

92HD89D
Eight channel HD Audio codec optimized for low power
©2009 INTEGRATED DEVICE TECHNOLOGY, INC.
2.7.
2.8.
AFG D0
AFG D1
Reference Bias generator
1.No DAC or ADC streams are active. Analog mixing and loop thru are supported.
2.D4 and D5 power states are entered only when D3cold is requested. D4 and D5 may be viewed as D3cold behav-
3.VAG is kept active when ports are disabled or in D3/D3cold/D4. PC_Beep is supported in D3 but may be attenuated
4.VAG is always ramped up and down gradually, except in the case of a sudden power removal. VAG is active in
5. Both AVDD and DVDD must be available for Port Sense to operate.
6.Not active if BITCLK is not running (Controller in D3), but can signal power state change request (PME)
7.Only double function group reset verbs and link reset supported per ECR15b
8.PLL remains on if SPDIF_Out Keep Alive is enabled. PLL disabled only after DAC fading is complete and SDM has
9.PLL disabled only after DAC fading is complete and SDM has settled.
Reference Bandgap core
ADC Volume Control
Analog PC_Beep
Digital PC_Beep
ioral options.
and distorted depending on load impedance.
D2/D3 but in a low power state.
settled.
Mixer Volumes
Analog Clocks
HD Audio-Link
Analog mixer
VrefOut Pins
Lo/HP Amps
Input Boost
Port Sense
GPIO pins
Function
VAG amp
Ref ADC
The D3-default state is available for HD Audio compliance. The programmable values, exposed via
vendor-specific settings, are under IDT Device Driver control for further power reduction. The analog
mixer, line and headphone amps, port presence detect, and internal references may be disabled
using vendor specific verbs. Use of these vendor specific verbs will cause pops.
The default power state for the Audio Function Group after reset is D3.
The AFG D0 state is the active state for the device. All functions are active if their power state (if they
support power management at their node level) has been set to D0.
D1 is a lower power mode where all converter widgets are disabled. Analog mixer and port functions
are active. The part will resume from theD1 to theD0 state within 1 mS.
PLL
On
On
On
On
On
On
On
On
On
On
D0
On
On
On
On
On
On
On
D1
Off
Off
Off
On
On
On
On
On
On
On
On
On
On
On
On
On
On
1
21
Off
Off
Off
On
Off
Off
Off
Off
On
On
On
On
On
On
On
On
On
D2
Low Drive
Low Drive
On
On
On
On
Off
D3
Off
Off
Off
Off
Off
Off
Off
On
On
On
6
6
5
6
8
3
4
Low Drive
Low Drive
Limited
D3cold
Off
Off
Off
Off
On
Off
Off
Off
Off
Off
Off
Off
On
On
9
7
3
Low Drive
Low Drive
Specific
Vendor
D4
Off
Off
Off
On
Off
Off
Off
Off
Off
Off
Off
On
On
Off
Off
2
3
SpecificD5
Vendor
V1.0 04/10
92HD89D
Off
Off
Off
Off
Off
Off
Off
Off
Off
Off
Off
Off
Off
Off
Off
Off
Off
2