IDT92HD91B1X5NLGXYAX8 IDT, Integrated Device Technology Inc, IDT92HD91B1X5NLGXYAX8 Datasheet - Page 19

• Manufacturer Part Number: IDT92HD91B1X5NLGXYAX8
• Manufacturer: IDT, Integrated Device Technology Inc

Specifications of IDT92HD91B1X5NLGXYAX8

• Lead Free Status / RoHS Status: Compliant

92HD91
SINGLE CHIP PC AUDIO SYSTEM, CODEC+SPEAKER AMPLIFIER+CAPLESS HP+LDO
©2009 INTEGRATED DEVICE TECHNOLOGY, INC.
IDT™ CONFIDENTIAL
2.6.
1.
2.
3.
4.
5.
Power Management
Reference Bias generator
Digital Microphone inputs
No DAC or ADC streams are active. Analog mixing and loop thru are supported.
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. The codec will shut down the capless headphone amplifiers and BTL amplifier in
D3 and below. In D3, Hendrix/Kaveri will turn on the BTL and Capless amplifiers if activity is detected on the PC_BEEP
input and analog PC_Beep is enabled.
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)
Reference Bandgap core
Both AVDD and DVDD must be available for Port Sense to operate.
ADC Volume Control
Cap-less HP Amps
Analog PC_Beep
Digital PC_Beep
SPDIF Outputs
Mixer Volumes
Analog Clocks
HD Audio-Link
Analog mixer
VrefOut Pins
Lo/HP Amps
Input Boost
Port Sense
GPIO pins
Function
BTL Amp
VAG amp
Ref ADC
The HD Audio specification defines power states, power state widgets, and power state verbs.
Power management is implemented at several levels. The Audio Function Group (AFG) , all con-
verter widgets, and all pin complexes support the power state verb F05/705. Converter widgets are
active in D0 and inactive in D1-D3.
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.
DAC
ADC
D2S
On
On
On
On
On
On
On
On
On
On
On
On
On
On
On
D0
On
On
On
On
On
On
On
On
Table 6. Power Management
D1
On
Off
Off
Off
Off
Off
Off
Off
On
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
On
D2
Low Drive
Low Drive
Low Drive
Low Drive
On (idle)
On
On
On
On
D3
Off
Off
Off
Off
Off
Off
Off
Off
Off
Off
Off
On
On
On
5
5
4
5
5
2
2
2
3
Low Drive
Low Drive
Low Drive
D3cold
Limited
Off
Off
Off
Off
Off
Off
Off
Off
On
Off
Off
Off
Off
Off
Off
Off
Off
On
On
2
2
Specific D4
Low Drive
Low Drive
Low Drive
Vendor
Off
Off
Off
Off
Off
Off
Off
Off
On
Off
Off
Off
Off
Off
Off
Off
Off
On
On
Off
2
2
SpecificD5
V 0.91 10/10
Vendor
Off
Off
Off
Off
Off
Off
Off
Off
Off
Off
Off
Off
Off
Off
Off
Off
Off
Off
Off
Off
Off
Off
Off
92HD91