CS4207 Datasheet, PDF (66/144 Pages) Cirrus Logic – Low-power, 4-in / 6-out HD Audio CODEC with Headphone Amp

CS4207
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).
6.6.8
6.6.9
Converter Stream, Channel
Get Parameter Command Format:
Bits [31:28]
CAd = X
Bits [27:20]
Node ID = 07h
Bits [19:8]
Verb ID = F06h
Bits [7:0]
Parameter ID = 00h
Set Parameter Command Format:
Bits [31:28]
CAd = X
Bits [27:20]
Node ID = 07h
Bits [19:8]
Verb ID = 706h
Bits [7:0]
Parameter ID = xxh
Response Format:
Bits
31:8
Type
Read Only
7:4
Read/Write
3:0
Read/Write
Default
000000h
0h
0h
Description
Reserved
Stream Number (SN): Indicates the stream
number used by the Input Converter. “0h” is
stream 0, “1h” is stream 1, etc.
By convention, stream 0 is reserved and unused
so that converter whose stream number has
been reset to “0h” does not unintentionally
decode data not intended for them.
Lowest Channel Number (LCN): Indicates the
lowest channel used by the Input Converter. The
stereo converter will use this LCN value plus 1
for its left and right channel.
Converter Format
Get Parameter Command Format:
Bits [31:28]
CAd = X
Bits [27:20]
Node ID = 07h
Bits [19:8]
Verb ID = A00h
Bits [7:0]
Parameter ID = 00h
Set Parameter Command Format:
Bits [31:28]
CAd = X
Bits [27:20]
Node ID = 07h
Bits [19:8]
Verb ID = 2xxh
Bits [7:0]
Parameter ID = xxh
Response Format:
Bits [15:0] must be programmed by software with the same value programmed into the Stream Descriptor,
so that the data format being transmitted on the link matches what is expected by the consumer of the
data.
If the TYPE is set to Non-PCM, the controller pushes data over the link and is not concerned with format-
ting. The base rate, data type, and number of Words (MULT) to send each valid frame are specified to
control the rate at which the non-PCM data is sent.
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DS880F1