Pre-Production
WM8850
PORT-D (NID = 0Eh)
Table 16 gives a summary of the Port-D node:
NODE SUMMARY INFORMATION
0Eh
NID
Widget Type
Pin Complex
Supported Get Verbs
Supported Set Verbs
Unsolicited Responses
Bh, F00h, F07h, F1Ch
3h, 707h, 71Ch, 71Dh, 71Eh, 71Fh
None
Table 16 Port-D Node Summary Information
Port-D provides digital gain for the microphone(s) connected to DMICDAT1, allowing the signal level
to be adjusted by up to +32dB to −12dB in 0.5dB steps. Gain can be applied to left and right
channels independently if required. Additionally, a mute function is available – again this can be
applied to separate channels as required. The gain is controlled using the Amplifier Gain/Mute Verb.
There are no vendor-specific verbs associated with the Port-D node.
PORT-H (NID = 16H)
Table 17 gives a summary of the Port-H node:
NODE SUMMARY INFORMATION
NID
16h
Widget Type
Pin Complex
Supported Get Verbs
Supported Set Verbs
Unsolicited Responses
Vendor-Specific Verbs
Bh, F00h, F02h, F07h, F1Ch, F73h
3h, 707h, 71Ch, 71Dh, 71Eh, 71Fh, 773h
None
F73h, 773h : Internal Path Verb
Table 17 Port-H Node Summary Information
Port-H provides digital gain for the microphone(s) connected to DMICDAT2, allowing the signal level
to be adjusted by up to +32dB to −12dB in 0.5dB steps. Gain can be applied to left and right
channels independently if required. Additionally, a mute function is available – again this can be
applied to separate channels as required. The gain is controlled using the Amplifier Gain/Mute Verb.
Note that Port-H can also be used to provide a S/PDIF output. For details of the use of the node as a
S/PDIF output, see the “S/PDIF Transmit” section.
When Port-H is configured for S/PDIF output, it is possible to select either S/PDIF In or S/PDIF Tx 2
as the data source. The signal path is selected using vendor-specific Internal Path Verb.
SET VERB
BIT
BITFIELD
NAME
DEFAULT
DESCRIPTION
773h
7:0
Path Sel
17h
Selects the source of the Port-H node:
10h = S/PDIF In
17h = S/PDIF Tx2
PP, April 2011, Rev 3.2
49
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WOLFSON [ WOLFSON MICROELECTRONICS PLC ]
