CS4207 Datasheet, PDF (126/144 Pages) Cirrus Logic – Low-power, 4-in / 6-out HD Audio CODEC with Headphone Amp

6.15.3 Processing State
Get Parameter Command Format:
Bits [31:28]
CAd = X
Bits [27:20]
Node ID = 11h
Set Parameter Command Format:
Bits [31:28]
CAd = X
Bits [27:20]
Node ID = 11h
Response Format:
Bits
31:8
Type
Read Only
7:0
Read/Write
CS4207
Bits [19:8]
Verb ID = F03h
Bits [7:0]
Parameter ID = 00h
Bits [19:8]
Verb ID = 703h
Bits [7:0]
Parameter ID = xxh
Default
000000h
00h
Description
Reserved
HDA Defined Processing State: Writes to these
bits set the Widget to the processing state as
described below:
’00’h; Processing Off.
’01’h; Processing On.
’02’h; Processing Benign. Benign state is not
supported. Will be treated as “Processing Off”.
’03’h - ‘7F’h; - Reserved
6.15.4 Coefficient Index
The Coefficient Index is a zero-based index into the processing coefficient list which will be either read
or written using the Processing Coefficient control. When the coefficient has been read or written to, the
Coefficient Index will automatically increment by one so that the next Set Processing Coefficient verb will
load the coefficient into the next slot. The auto-increment feature can be disabled by setting the Disable
Coefficient Index Auto-Increment bit in the DAC Configuration Index Register (CIR=0003h). The auto-in-
crement feature will “wrap around” at a Coefficient Index value of 1Fh, that is an index of 1Fh will be auto-
incremented to an index of 00h. If Coefficient Index is set to be greater than the number of “slots” in the
processing coefficient list, unpredictable behavior will result if an attempt is made to Get or Set the pro-
cessing coefficient.
Get Parameter Command Format:
Bits [31:28]
CAd = X
Bits [27:20]
Node ID = 11h
Bits [19:16]
Verb ID = Dh
Bits [15:0]
Parameter ID = 0000h
Set Parameter Command Format:
Bits [31:28]
CAd = X
Bits [27:20]
Node ID = 11h
Bits [19:16]
Verb ID = 5h
Bits [15:0]
Parameter ID = xxxxh
Response Format:
Bits
31:16
15:0
Type
Read Only
Read/Write
Default
0000h
0000h
Description
Reserved
Index n: Coefficient Index value.
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