CS4207 Datasheet, PDF (72/144 Pages) Cirrus Logic – Low-power, 4-in / 6-out HD Audio CODEC with Headphone Amp

CS4207
6.7.6
Power State Settings Reset(PS-SettingsRe-
set): This bit is set to ‘1’b when, during any type
of reset or low power state transition, the settings
within this widget that were changed from the
defaults, either by software or hardware, have
10
Read Only
1b
been reset back to their default state. When
these settings have not been reset, this is
reported as ‘0’b. This bit is always a ‘1’b follow-
ing a POR condition. For more information,
see “Power State Settings Reset (PS-Set-
tingsReset)” on p 27
Power State Clock Stop OK(PS-ClkStopOK):
9
Read Only
0b
This bit is not supported and will always return
‘0’b when read.
8
Read Only
0b
Power State Error (PS-Error): This bit is not
supported and will always return ‘0’b when read.
Power State Actual (PS-Act): This field indi-
7:4
Read Only
0011b
cates the actual power state of the referenced
node. The default state is D3.
Power State Set (PS-Set): Writes to these bits
set the Audio Function Group to the Power State
as described below:
PSS = ’0000’b; D0 - Fully on.
PSS = ‘0001’b; D1 - Not Supported
3:0
Read/Write
0011b
PSS = ‘0010’b; D2 - Not Supported
PSS = ‘0011’b; D3 - Allows for lowest possible
power consumption under software control. See
“D3 Lower Power State Support” on page 25 for
more information.
PSS = ‘0100’b; D4 - Not Supported
PS-Set is a PowerState field which defines the current power setting of the referenced node. Since this
node is of type other than an Audio Function Group node, the actual power state is a function of both this
setting and the PowerState setting of the Audio Function Group node under which this node was enumer-
ated (is controlled).
PS-Act is a PowerState field which indicates the actual power state of this node. Within the Audio Func-
tion Group node, this field will always be equal to the PS-Set field (modulo the time required to execute a
power state transition). Within this type of node, this field will be the lower power consuming state of either
a) the PS-Set field of the currently referenced node or b) the PS-Set field of the Audio Function Group
node under which the currently referenced node was enumerated (is controlled).
Converter Stream, Channel
Get Parameter Command Format:
Bits [31:28]
CAd = X
Bits [27:20]
S/P Tx 1 Node ID=08h
S/P Tx 2 Node ID=14h
Bits [19:8]
Verb ID = F06h
Bits [7:0]
Parameter ID = 00h
Set Parameter Command Format:
Bits [31:28]
CAd = X
Bits [27:20]
S/P Tx 1 Node ID=08h
S/P Tx 2 Node ID=14h
Bits [19:8]
Verb ID = 706h
Bits [7:0]
Parameter ID = xxh
72
DS880F1