CS4207 Datasheet, PDF (48/144 Pages) Cirrus Logic – Low-power, 4-in / 6-out HD Audio CODEC with Headphone Amp

CS4207
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).
6.4.7
Converter Stream, Channel
Get Parameter Command Format:
Bits [31:28]
CAd = X
Bits [27:20]
DAC1 Node ID=02h
DAC2 Node ID=03h
DAC3 Node ID=04h
Bits [19:8]
Verb ID = F06h
Bits [7:0]
Parameter ID = 00h
Set Parameter Command Format:
Bits [31:28]
CAd = X
Bits [27:20]
DAC1 Node ID=02h
DAC2 Node ID=03h
DAC3 Node ID=04h
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): This field is written by
software to indicate the stream number used by
the Output 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): This field is
written by software to indicate the lowest channel
used by the Output Converter. The stereo con-
verter will use this LCN value plus 1 for its left
and right channel.
6.4.8
Converter Format
Get Parameter Command Format:
Bits [31:28]
CAd = X
Bits [27:20]
DAC1 Node ID=02h
DAC2 Node ID=03h
DAC3 Node ID=04h
Bits [19:8]
Verb ID = A00h
Set Parameter Command Format:
Bits [31:28]
CAd = X
Bits [27:20]
DAC1 Node ID=02h
DAC2 Node ID=03h
DAC3 Node ID=04h
Bits [19:8]
Verb ID = 2xxh
Response Format:
Bits [7:0]
Parameter ID = 00h
Bits [7:0]
Parameter ID = xxh
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DS880F1