Cirrus Logic CS4207 - Manual (Page 58)

58 DS880F4
CS4207
6.5.11 Power States
Get Parameter Command Format:
Set Parameter Command Format:
Response Format:
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).
Bits [31:28] Bits [27:20] Bits [19:8] Bits [7:0]
CAd = X ADC1 Node ID=05h
ADC2 Node ID=06h Verb ID = F05h Payload = 00h
Bits [31:28] Bits [27:20] Bits [19:8] Bits [7:0]
CAd = X ADC1 Node ID=05h
ADC2 Node ID=06h Verb ID = 705h Payload = xxh
Bits Type Default Description
31:11 Read Only 00000h Reserved
10 Read Only 1b
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
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-SettingsRe-
set)” on p 28
9 Read Only 0b Reserved
8 Read Only 0b
Power State Error (PS-Error): This bit is not
supported and will always return ‘0’b when read.
7:4 Read Only 0011b
Power State Actual (PS-Act): This field indi-
cates the actual power state of the referenced
node. The default state is D3.
3:0 Read/Write 0011b
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
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 26 for
more information.
PSS = ‘0100’b; D4 - Not Supported