WM8850
Pre-Production
GET PARAMETER VERB
Verb ID
Payload [7:0]
Response[31:0]
Get
F00h
Parameter ID (PID)
Parameter Value
Audio Widget Capabilities Parameter (PID = 09h)
Bit
Bitfield Name
Rsvd
RW
R
R
R
R
R
R
R
R
R
R
R
R
R
Default
Description
[31:24]
[23:20]
[19:16]
[15:12]
[11]
[10]
[9]
00h
4h
0h
0h
0
Reserved
Type
Indicates that this is a Pin Complex Widget
Latency not reported
Delay
Rsvd
Reserved
L-R Swap
PowerCntrl
Digital
Left/Right swap capability not supported
0
Indicates that the Power State Verb is not supported in this widget
Indicates that this widget is translating digital data
Indicates that a connection list is present
1
[8]
Conn List
Unsol Capable
ProcWidget
Stripe
1
[7]
0
Widget does not support Unsolicited Responses
Widget does not have processing capabilities
Widget does not support striping
[6]
0
[5]
0
[4]
Format Override
0
Widget does not override the format defined for the AFG
The AFG amplifier parameters are overridden for this node
[3]
Amp Parameter
Override
1
[2]
[1]
[0]
Out Amp Present
In Amp Present
Stereo
R
R
R
0
1
1
Output amplifier not present in this widget
Input amplifier is present in this widget
Indicates that this is a stereo widget
Pin Capabilities Parameter (PID = 0Ch)
Bit
Bitfield Name
Rsvd
RW
R
Default
Description
[31:17]
[16]
[15:8]
[7]
0000h
Reserved
EAPD Capable
VRef Control
Rsvd
R
0
00h
0
Widget does not support an EAPD pin
VRef not supported for digital inputs
Reserved
R
R
[6]
Balanced I/O
Pins
R
0
Indicates that this widget does not have balanced pins
[5]
[4]
[3]
Input Capable
R
R
R
1
1
0
Indicates that this widget is input capable
Indicates that this widget is output capable
Not applicable as this in an input port
Output Capable
Headphone
Drive Capable
[2]
Presence Detect
Capable
R
0
Presence detection not supported
[1]
[0]
Trigger Required
R
R
0
0
Impedance measurement not supported
Impedance measurement not supported
Impedance
Sense Capable
Input Amplifier Capabilities Response Format (PID = 0Dh)
Bit
Bitfield Name
Mute Capable
Rsvd
RW
R
Default
1
Description
[31]
DMIC Amplifiers are capable of hard-mute
Reserved
[30:23]
[22:16]
[15]
R
00h
01h
0
Step Size
Rsvd
R
Gain step size is 0.5dB
R
Reserved
[14:8]
[7]
Num Steps
Rsvd
R
58h
0
Number of steps in gain range is 89 (−12dB to +32dB)
Reserved
R
[6:0]
Offset
R
18h
The step number that 0dB corresponds to is 18h
PP, April 2011, Rev 3.2
208
w
WOLFSON [ WOLFSON MICROELECTRONICS PLC ]
