Cirrus Logic CS4207 - Manual (Page 39)

DS880F4 39
CS4207
6.3.5 Supported Stream Formats
Get Parameter Command Format:
Response Format:
6.3.6 Supported Power States
Get Parameter Command Format:
Response Format:
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
Clock stops or if Link Resets are generated before the Unsolicited Response for the state change has
been returned to the host.
Bits [31:28] Bits [27:20] Bits [19:8] Bits [7:0]
CAd = X Node ID = 01h Verb ID = F00h Parameter ID = 0Bh
Bits Type Default Description
31:3 Read Only 0 Reserved
2 Read Only 0b
AC-3 (AC3): AC-3™ data is not supported.
1 Read Only 0b
Float32 (FLT32): Float32 formatted data is not
supported on this widget.
0 Read Only 1b
Pulse Code Modulation (PCM): PCM formatted
data is supported on this widget.
Bits [31:28] Bits [27:20] Bits [19:8] Bits [7:0]
CAd = X Node ID = 01h Verb ID = F00h Parameter ID = 0Fh
Bits Type Default Description
31 Read Only 1b EPSS: Function Group supports extended
power states.
30 Read Only 1b
CLKSTOP: Function group supports D3 opera-
tion even if there is no BCLK present on the link.
29 Read Only 0b
S3D3coldSup: Software should place the codec
in D3hot state when the platform is entering S3
state.
28:5 Read Only 000000h Reserved
4 Read Only 0b
D3coldSup: D3cold operation is not supported.
3 Read Only 1b D3Sup: D3hot operation is supported.
2 Read Only 0b
D2Sup: D2 operation is not supported.
1 Read Only 0b
D1Sup: D1 operation is not supported.
0 Read Only 1b
D0Sup: D0 operation is supported.