alc268 Realtek Semiconductor Corporation, alc268 Datasheet - Page 59

• Manufacturer Part Number: alc268
• Description: 2+2 Channel High Definition Audio Codec
• Manufacturer: Realtek Semiconductor Corporation

8.28. Verb – Set BEEP Generator (Verb ID=70Ah)
8.29. Verb – Get GPIO Data (Verb ID=F15h)
2+2 Channel High Definition Audio Codec
Set Command Format
‘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
Codec Response for NID=01h (Audio Function Group)
Codec Response for Other NID
Bit [31:28]
Bit [31:28]
Cad=X
Cad=X
31:8
31:0
31:8
31:0
7:0
7:4
3:0
Bit
Bit
Bit
Bit
Description
Reserved.
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
Reserved.
GPIO[7:4] Data. Not supported in the ALC268.
GPIO[3:0] Data.
The value written (output) or sensed (input) on the corresponding pin if it is enabled.
Description
0’s.
Node ID=01h
Node ID=Xh
Bit [27:20]
Bit [27:20]
Table 60. Verb – Set BEEP Generator (Verb ID=70Ah)
Verb ID=71Bh
Verb ID=F15h
Table 61. Verb – Get GPIO Data (Verb ID=F15h)
Bit [19:8]
Bit [19:8]
Payload Bit [7:0]
Payload Bit [7:0]
Divider [7:0]
51
0’s
Track ID: JATR-1076-21
Codec Response Format
Codec Response Format
Response [31:0]
Response [31:0]
0’s for all nodes
32-bit Response
ALC268 Series
Datasheet
Rev. 1.3