WM8850
Pre-Production
DEVICE DESCRIPTION
This section of the datasheet provides detailed information on all the major paths through the device,
along with the nodes used and the vendor-specific verbs. For those verbs implemented in the
WM8850 which are as defined in the High Definition Audio Specification Revision 1.0 there is no
detailed text describing their use in this datasheet.
The functions covered in this section of the datasheet, and the WM8850 nodes associated with each,
are listed in Table 5.
FUNCTION
NODE NAME
Port-E
NODE ID (NID)
0Ch
0Ah
02h
Stereo Analogue Line Record
PGA1
ADC1
Stereo Analogue Microphone Record
Digital Microphone Record
Port-B
0Dh
0Bh
09h
PGA2
MIC1 Mux
MIC1
03h
Port-D
0Eh
09h
MIC1 Mux
MIC1
03h
Port-H
16h
MIC2
15h
Stereo Headphone Playback
Stereo Line Playback
DAC1
06h
Port-A
11h
DAC2
07h
Port-G
12h
DAC3
08h
Port-F
13h
S/PDIF Receive
S/PDIF Transmit
S/PDIF In
S/PDIF Rx
S/PDIF Tx 1
S/PDIF Out
S/PDIF Tx 2
Port-H
10h
05h
04h
0Fh
17h
16h
Ancillary Functions
Beep
14h
(Beep generator,
AFG
01h
VMID control,
GPIO2 automatic control mode,
Unsolicited response priority control)
Table 5 WM8850 Device Functions
PP, April 2011, Rev 3.2
38
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WOLFSON [ WOLFSON MICROELECTRONICS PLC ]
