CS4207 Datasheet, PDF (38/144 Pages) Cirrus Logic – Low-power, 4-in / 6-out HD Audio CODEC with Headphone Amp

6.3.5
Supported Stream Formats
Get Parameter Command Format:
Bits [31:28]
CAd = X
Bits [27:20]
Node ID = 01h
Response Format:
Bits
31:3
2
1
Type
Read Only
Read Only
Read Only
0
Read Only
CS4207
Bits [19:8]
Verb ID = F00h
Bits [7:0]
Parameter ID = 0Bh
Default
0
0b
0b
1b
Description
Reserved
AC-3^® (AC3): AC3 is not supported.
Float32 (FLT32): Float32 formatted data is not
supported on this widget.
Pulse Code Modulation (PCM): PCM formatted
data is supported on this widget.
6.3.6
Supported Power States
Get Parameter Command Format:
Bits [31:28]
CAd = X
Bits [27:20]
Node ID = 01h
Bits [19:8]
Verb ID = F00h
Bits [7:0]
Parameter ID = 0Fh
Response Format:
Bits
31
Type
Read Only
30
Read Only
29:5
Read Only
4
Read Only
3
Read Only
2
Read Only
1
Read Only
0
Read Only
Default
1b
1b
000000h
0b
1b
0b
0b
1b
Description
EPSS Supported. Indicates that the Function
Group supports additional capabilities
allowing better low power operation.
CLKSTOP Supported
Reserved
D4 is not Supported
D3 is Supported. Since Extended Power States
is also supported then the maximum exit time
back to fully functional is 10 milliseconds. This is
measured from the response to the Set Power
State verb that caused the transition from D3
back to fully operational D0 state.
D2 is not Supported
D1 is not Supported
D0 Supported
CLKSTOP is defined only at the Function Group only (not at the widget level) and indicates that the Func-
tion Group and all widgets under it support D3 operation even when there is no BitCLK present on the
Link. The maximum exit time back to fully functional is 10 milliseconds from the time that the clock begins
operation and a codec address cycle has been completed. The CLKSTOP capability extends the required
functionality for D3 support while the link is operational to include:
• Reporting of presence detect state changes, if enabled and supported by the pin widget, even if the Link
Clock is not running (controller low power state) or is currently in a Link Reset condition.
• Presence state changes occurring during Link Reset will be deferred until after the reset sequence has
completed. Presence state change Unsolicited Responses, if enabled, will not be lost because the Link
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DS880F1