92hd89c Integrated Device Technology, 92hd89c Datasheet - Page 19

• 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
Reference Bias generator
Digital Microphone inputs
Reference Bandgap core
ADC Volume Control
Analog PC_Beep
Digital PC_Beep
1.
2.
3.
4.
5.
6.
7.
8.
9.
SPDIF Outputs
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
No DAC or ADC streams are active. Analog mixing and loop thru are supported.
D4 and D5 power states are entered only when D3cold is requested. D4 and D5 may be viewed as D3cold
behavioral options.
VAG is kept active when ports are disabled or in D3/D3cold/D4. PC_Beep is supported in D3 but may be
attenuated and distorted depending on load impedance.
VAG is always ramped up and down gradually, except in the case of a sudden power removal. VAG is active in
D2/D3 but in a low power state.
Not active if BITCLK is not running (Controller in D3), but can signal power state change request (PME)
Only double function group reset verbs and link reset supported per ECR15b
PLL remains on if SPDIF_Out Keep Alive is enabled. PLL disabled only after DAC fading is complete and SDM
has settled.
PLL disabled only after DAC fading is complete and SDM has settled.
The following table describes what functionality is active in each power state.
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.
Both AVDD and DVDD must be available for Port Sense to operate.
DAC
ADC
D2S
PLL
On
On
On
On
On
On
On
On
On
On
On
On
On
On
On
D0
On
On
On
On
On
On
On
D1
On
Off
Off
Off
Off
Off
Off
Off
On
On
On
On
On
On
On
On
On
On
On
On
On
On
1
19
On (idle)
Off
Off
Off
Off
Off
Off
Off
On
Off
Off
Off
Off
On
On
On
On
On
On
On
On
On
D2
Low Drive
Low Drive
On (idle)
On
On
On
On
Off
D3
Off
Off
Off
Off
Off
Off
Off
Off
Off
Off
Off
On
On
On
6
6
5
6
8
6
3
4
Low Drive
Low Drive
Limited
D3cold
Off
Off
Off
Off
Off
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
Off
Off
Off
Off
Off
On
Off
Off
Off
Off
Off
Off
Off
On
On
Off
Off
2
3
SpecificD5
V 0.91 08/09
Vendor
92HD89C
Off
Off
Off
Off
Off
Off
Off
Off
Off
Off
Off
Off
Off
Off
Off
Off
Off
Off
Off
Off
Off
Off
2