Pre-Production
WM8850
DETAILED VERB DESCRIPTIONS
00h
01h
02h
03h
04h
05h
06h
07h
08h
09h
0Ah
0Bh
0Ch
0Dh
0Eh
0Fh
10h
11h
12h
13h
14h
15h
16h
17h
This section provides full verb information on each node in the WM8850. For verbs defined as part of
the High Definition Audio Specification Revision 1.0 this is the only information provided. For vendor-
specific verbs, more detailed explanation of the function is provided in the main text of the datasheet
above.
ROOT NODE (NID = 00H)
Verb ID
Payload [7:0]
Response[31:0]
Get
F00h
Parameter ID (PID)
Parameter Value
Vendor ID Response Format (PID = 00h)
Bit
Bitfield Name
Vendor ID
RW
R
Default
1AECh
8800h
Description
[31:16]
[15:0]
Vendor ID
Device ID
R
Device ID = WM8800
Revision ID Response Format (PID = 02h)
Bit
Bitfield Name
Rsvd
RW
R
Default
00h
Description
[31:24]
[23:20]
Reserved
MajRev
R
1h
Major revision number (left of the decimal) of the HDA Specification to
which the WM8850 is fully compliant
[19:16]
MinRev
R
0h
Minor revision number (right of the decimal) of the HDA Specification to
which the WM8850 is fully compliant
[15:8]
[7:0]
Revision ID
Stepping ID
R
R
-
-
Wolfson’s revision number for this device
Optional stepping number within the Revision ID
Subordinate Node Count Response Format (PID = 04h)
Bit
Bitfield Name
Rsvd
RW
R
Default
00h
Description
[31:24]
[23:16]
[15:8]
[7:0]
Reserved
Starting NID
Rsvd
R
01h
Starting NID of the first function group
Reserved
R
00h
Total Nodes
R
1h
Total number of function group nodes
PP, April 2011, Rev 3.2
85
w
WOLFSON [ WOLFSON MICROELECTRONICS PLC ]
