alc880 Realtek Semiconductor Corporation, alc880 Datasheet - Page 65
alc880
Manufacturer Part Number
alc880
Description
7.1 Channel High Definition Audio Codec
Manufacturer
Realtek Semiconductor Corporation
Datasheet
1.ALC880.pdf
(84 pages)
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8.28. Verb – Set BEEP Generator (Verb ID=70Ah)
8.29. Verb – Get GPIO Data (Verb ID= F15h)
7.1 Channel High Definition Audio Codec
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=Xh
Node ID=Xh
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
GPIO[1:0] Data
The value written (output) or sensed (input) on the corresponding pin if it is enabled
Description
0’s
Table 61. Verb – Set BEEP Generator (Verb ID= 70Ah)
Verb ID=71Bh
Verb ID=F15h
Table 62. Verb – Get GPIO Data (Verb ID= F15h)
Bit [19:8]
Bit [19:8]
Payload Bit [7:0]
Payload Bit [7:0]
Divider [7:0]
55
0’s
Track ID: JATR-1076-21
Codec Response Format
Codec Response Format
Response [31:0]
Response [31:0]
32-bit Response
0’s for all nodes
ALC880 Series
Datasheet
Rev. 1.4