ALC883 datasheet(39/78 Pages) REALTEK

39 / 78 page

ALC883 Series

Datasheet

7.1+2 Channel High Definition Audio Codec

Track ID: JATR-1076-21

Rev. 1.2

8.1.15. Parameter – GPIO Capabilities (Verb ID=F00h,

Parameter ID=11h)

Table 32. Parameter – GPIO Capabilities (Verb ID=F00h, Parameter ID=11h)

Codec Response Format

Bit

Description

GPIWake=0

The ALC883 series does not support GPIO wake up function

GPIUnsol=1

The ALC883 series supports GPIO unsolicited response

29:24

Reserved. Read as 0’s

23:16

NumGPIs=00h

No GPI pin is supported

15:8

NumGPOs=00h

No GPO pin is supported

7:0

NumGPIOs=02h

Two GPIO pins are supported

8.1.16. Parameter – Volume Knob Capabilities (Verb ID=F00h,

Parameter ID=13h)

Table 33. Parameter – Volume Knob Capabilities (Verb ID=F00h, Parameter ID=13h)

Codec Response Format for NID=21h (Volume Control Knob)

Bit

Description

31:8

Reserved. Read as 0’s

Delta

0: Software cannot modify the Volume Control Knob volume

1: Software can write a base volume to the Volume Control Knob

6:0

NumSteps

The number of steps in the range of the Volume Control Knob

Note: In devices without volume knob support, the ALC883 will respond with 0s to this parameter.

ALC883 Datasheet(PDF) 39 Page - Realtek Semiconductor Corp.