Cirrus-logic CS4207 User Manual download pdf (Page 127)

DS880F4 127

CS4207

6.15.3 Processing State

Get Parameter Command Format:

Set Parameter Command Format:

Response Format:

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 (CIR = 0003h) register. The auto-increment

feature will “wrap around” at a Coefficient Index value of 04h, that is an index of 04h will be auto-incre-

mented to an index of 00h. If Coefficient Index is set to be greater than the number of “slots” in the pro-

cessing coefficient list, unpredictable behavior will result if an attempt is made to Get or Set the processing

coefficient.

Get Parameter Command Format:

Set Parameter Command Format:

Response Format:

Bits [31:28] Bits [27:20] Bits [19:8] Bits [7:0]

CAd = X Node ID = 11h Verb ID = F03h Payload = 00h

Bits [31:28] Bits [27:20] Bits [19:8] Bits [7:0]

CAd = X Node ID = 11h Verb ID = 703h Payload = xxh

Bits Type Default Description

31:8 Read Only 000000h Reserved

7:0 Read/Write 00h

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

Bits [31:28] Bits [27:20] Bits [19:16] Bits [15:0]

CAd = X Node ID = 11h Verb ID = Dh Payload = 0000h

Bits [31:28] Bits [27:20] Bits [19:16] Bits [15:0]

CAd = X Node ID = 11h Verb ID = 5h Payload = xxxxh

Bits Type Default Description

31:16 Read Only 0000h Reserved

15:0 Read/Write 0000h

Index n: Coefficient Index value.

1 2 ... 122 123 124 125 126 127 128 129 130 131 132 ... 147 148

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Cirrus-logic CS4207 User Manual Page 127