AD1981HD

Rev. 0 | Page 10 of 16

HD AUDIO CODEC INFORMATION

Table 20. Widget List and Descriptions

NID

Name

Type ID

Type

Description

00

ROOT

x

Root

Device identification.

01

FUNCTION

x

Function

Designates this device as an audio codec.

02

S/PDIF

0

Audio output

Designates the codec S/PDIF digital stream output interface.

03

Front DAC

0

Audio output

Designates the playback channel digital/audio converters.

04

Record ADC

1

Audio input

Designates the record channel audio/digital converters.

05

Port-D (Line Out)

4

Pin complex

Port-D pin drivers. Typically used as rear panel line output.

06

Port-A (Headphone Out)

4

Pin complex

Port-A pin drivers. Typically used as front panel headphone output.

07

MONO_OUT

4

Pin complex

Monaural output pin driver. Typically used to drive an internal

speaker or as a microphone selector on a telephony system.

08

Port-B (Front Microphone)

4

Pin complex

Port-B pin drivers. Typically used as front panel microphone.

09

Port-C (Line In)

4

Pin complex

Port-C pin drivers. Typically used as rear panel line input.

0A

S/PDIF_OUT

4

Pin complex

S/PDIF output digital interface.

0B

Monaural Selector

3

Audio selector

Chooses which signals drive the monaural output mixer and pin.

0C

Microphone Mixer

2

Audio mixer

Allows selective mixing of the front/rear microphone sources to a

single combined signal.

0D

PC Beep Selector

3

Audio selector

Selects between the digital beep generator and the analog PC BEEP pin

as the source for the analog mixer.

0E

Analog Mixer

2

Audio mixer

Selectively mixes analog input signals into a single signal.

0F

Monaural Mixer

2

Audio mixer

Stereo-to-monaural mixer for MONO_OUT.

10

Digital PC Beep

7

Beep generator

Digital PC beep generator.

11

Front Mix Amp

3

Audio selector

Individual gain control for the DAC (front) input to the Analog Mixer.

12

Port-B Mix Amp

3

Audio selector

Individual gain control for the Port-B (front microphone) input to the

analog mixer.

13

Port-C Mix Amp

3

Audio selector

Individual gain control for the Port-C (line in) input to the analog

mixer.

14

Analog Power-Down

5

Power widget

Power control on the analog mixer and associated amplifiers.

15

Record Selector

3

Audio selector

Chooses which signal is recorded by the record ADC. Also contains

the record gain controls.

16

PC Beep In

4

Pin complex

Analog PC Beep in pin drivers. This signal is coupled to the outputs

while the codec is held in reset. This may be selected as an input to

the analog mixer after reset has been released.

17

Port-E (Aux In)

4

Pin complex

Port-E pin drivers. Typically used as auxiliary input.

18

Port-F (Rear Microphone)

4

Pin complex

Port-F pin drivers. Typically used as rear panel microphone.

19

CD In

4

Pin complex

CD in pin drivers.

1A

Port-D Mix Amp

3

Audio selector

Individual gain control for the Port D (front) input to the analog

mixer.

1B

Port-E Mix Amp

3

Audio selector

Individual gain control for the Port E (aux) input to the analog mixer.

1C

Port-F Mix Amp

3

Audio selector

Individual gain control for the Port F (rear microphone) input to the

analog mixer.

1D

CD Mix Amp

3

Audio selector

Individual gain control for the CD input to the analog mixer.

1E

Front Microphone Mute

3

Audio selector

Mute control for Port B (front microphone) into microphone mixer.

1F

Rear Microphone Mute

3

Audio selector

Mute control for Port F (rear microphone) into the microphone mixer.