WM8850 View Datasheet(PDF) - Wolfson Microelectronics plc
Part Name
Description
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WM8850 Datasheet PDF : 223 Pages
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Pre-Production
PORT-D (NID = 0Eh)
Table 16 gives a summary of the Port-D node:
NODE SUMMARY INFORMATION
NID
0Eh
Widget Type
Pin Complex
Supported Get Verbs
Bh, F00h, F07h, F1Ch
Supported Set Verbs
3h, 707h, 71Ch, 71Dh, 71Eh, 71Fh
Unsolicited Responses
None
Table 16 Port-D Node Summary Information
WM8850
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
Bh, F00h, F02h, F07h, F1Ch, F73h
Supported Set Verbs
3h, 707h, 71Ch, 71Dh, 71Eh, 71Fh, 773h
Unsolicited Responses
None
Vendor-Specific Verbs
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
773h
7:0
BITFIELD
NAME
Path Sel
DEFAULT
DESCRIPTION
17h
Selects the source of the Port-H node:
10h = S/PDIF In
17h = S/PDIF Tx2
w
PP, April 2011, Rev 3.2
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