Pre-Production
WM8850
00h
01h
02h
03h
04h
05h
06h
07h
08h
09h
0Ah
0Bh
0Ch
0Dh
0Eh
0Fh
10h
11h
12h
13h
14h
15h
16h
17h
POWER STATE VERB
Verb ID
Payload [7:0]
00h
Response[31:0]
Get
Set
F05h
705h
Bits [31:0] in the table below
00000000h
Bits [7:0] in the table below
Bit
Bitfield Name
Rsvd
RW
R
Default
000000h
0
Description
[31:10]
[9]
Reserved
PS-ClkStopOK
R
Applicable when the AFG is in power state D3:
0 = BCLK must be kept running
1 = It is OK to stop BCLK
[8]
Rsvd
R
R
0
Reserved
[7:4]
PS-Act
2h
Indicates the actual power state of the AFG node:
0h = D0
1h = D1
2h = D2
3h = D3
4h = D4
The power state of the AFG is controlled by PS-Set below. For the AFG,
PS-Act will equal PS-Set (offset by the time required to execute a power
state transition).
[3:0]
PS-Set
RW
2h
Sets the power state of the AFG node:
0h = D0
1h = D1
2h = D2
3h = D3
4h = D4
Note: If the Link is operational, but the AFG is in power state D4, only Get Commands, Set Power State or AFG Reset
commands are executed – all other commands are ignored. In this scenario, the SDI line is inactive and does not transmit
responses, tags or data.
UNSOLICITED RESPONSE VERB
Verb ID
F08h
Payload [7:0]
00h
Response[31:0]
Get
Set
Bits [31:0] in the table below
00000000h
708h
Bits [7:0] in the table below
Bit
Bitfield Name
Rsvd
RW
R
Default
000000h
0
Description
[31:8]
[7]
Reserved
Enable
RW
0 = Unsolicited Responses disabled for this node
1 = Unsolicited Responses enabled for this node
Reserved
[6]
Rsvd
Tag
R
0
[5:0]
RW
01h
A software programmable tag value that is returned in the top six bits
(31:26) of every Unsolicited Response from this node.
The default for Tag is equal to the Node ID.
Note: The Unsolicited Response for the AFG node is defined in the “Unsolicited Responses” section.
PP, April 2011, Rev 3.2
89
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WOLFSON [ WOLFSON MICROELECTRONICS PLC ]
