alc885-gr Realtek Semiconductor Corporation, alc885-gr Datasheet - Page 76

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alc885-gr

Manufacturer Part Number
alc885-gr
Description
7.1+2 Channel High-performance Hda Codec With Content Protection
Manufacturer
Realtek Semiconductor Corporation
Datasheet

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8.30. Verb – Set BEEP Generator (Verb ID=70Ah)
8.31. Verb – Get GPIO Data (Verb ID=F15h)
7.1+2 Channel High-Performance HDA Codec
With Content Protection
Set Command Format
Bit [31:28]
‘Divider’ in Set Command
Note: All nodes except Audio Function Group (NID=01h) will ignore this verb.
Codec Response for All NID
Get Command Format
Bit [31:28]
Codec Response for NID=01h (Audio Function Group)
Codec Response for Other NID
CAd=X
CAd=X
31:8
31:0
31:8
31:0
7:0
7:2
1:0
Bit
Bit
Bit
Bit
Node ID=01h
Node ID=01h
Bit [27:20]
Bit [27:20]
Reserved
Reserved
Description
Frequency Divider, F[7:0]
The internal BEEP frequency is the result of dividing the 48kHz clock by 4 times the number specified
in F[7:0]
The lowest tone is 48kHz/(255*4)=47Hz
The highest tone is 48kHz/(1*4)=12kHz
A value of 00h in F[7:0] disables the internal BEEP generator and allows external PCBEEP input
Description
0’s
Description
GPIO[7:2] Data. Not supported in the ALC885
GPIO[1:0] Data
The value written (output) or sensed (input) on the corresponding pin if it is enabled
Description
0’s
Table 72. Verb – Set BEEP Generator (Verb ID= 70Ah)
Verb ID=71Bh
Verb ID=F15h
Table 73. Verb – Get GPIO Data (Verb ID= F15h)
Bit [19:8]
Bit [19:8]
Payload Bit [7:0]
Payload Bit [7:0]
Divider [7:0]
68
0’s
Codec Response Format
Codec Response Format
Response [31:0]
Response [31:0]
32-bit Response
0’s for all nodes
ALC885 Series
Datasheet
Rev. 1.1