92hd87b4x5ndg Integrated Device Technology, 92hd87b4x5ndg Datasheet - Page 14

• Manufacturer Part Number: 92hd87b4x5ndg
• Description: Single Chip Pc Audio System Codec+stereo Speaker Amplifier+capless Hp+ldo
• Manufacturer: Integrated Device Technology

IDT PROPRIETARY / IDT
SINGLE CHIP PC AUDIO SYSTEM, CODEC+SPEAKER AMPLIFIER+CAPLESS HP+LDO
92HD87
SINGLE CHIP PC AUDIO SYSTEM, CODEC+SPEAKER AMPLIFIER+CAPLESS HP+LDO
2.5.
2.6.
1.
2.
3.
4.
5.
AFG D0
AFG D1
Reference Bias generator
Reference Bandgap core
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.
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)
Both AVDD and DVDD must be available for Port Sense to operate.
Capless HP Amps
Analog PC_Beep
Digital PC_Beep
Analog Clocks
HD Audio-Link
Mixer Volumes
VrefOut Pins
Lo/HP Amps
Analog mixer
Input Boost
Port Sense
CONFIDENTIAL
VAG amp
GPIO pins
BTL Amp
Ref ADC
Function
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.
On
On
On
On
On
On
On
On
On
On
On
On
D0
On
On
On
On
On
Table 3. Power Management
D1
On
On
On
On
Off
Off
On
On
On
On
On
On
On
On
On
On
On
1
14
On
On
On
On
On
On
On
Off
Off
Off
Off
On
D2
On
Off
Off
On
On
Low Drive
Low Drive
Low Drive
Low Drive
On
On
On
On
On
On
Off
Off
Off
Off
D3
Off
Off
On
5
5
4
5
2
2
2
3
Low Drive
Low Drive
Low Drive
92HD87
Limited
D3cold
Off
Off
Off
Off
Off
Off
On
On
On
Off
Off
Off
Off
2
2
Specific D4
Low Drive
Low Drive
Low Drive
Vendor
Off
Off
Off
Off
Off
Off
On
On
Off
On
Off
Off
Off
Off
2
2
PC AUDIO
SpecificD5
V 0.95 10/10
Vendor
Off
Off
Off
Off
Off
Off
Off
Off
Off
Off
Off
Off
Off
Off
Off
Off
Off