alc658 Realtek Semiconductor Corporation, alc658 Datasheet - Page 46

• Manufacturer Part Number: alc658
• Description: Six-channel Ac?97 2.3 Audio Codec
• Manufacturer: Realtek Semiconductor Corporation

9.3. Reset
There are 3 types of reset operations: Cold, Warm, and Register.
The AC97 controller should drive SYNC and SDATA_OUT low during the period of RESET# assertion to guarantee that the
ALC658 has reset successfully.
9.4. CD Input
For noise cancellation reasons, it is important to pay attention to differential CD input. Below is an example of differential CD
input.
Six-Channel AC’97 2.3 Audio Codec
Reset Type
Cold
Register
Warm
Trigger Condition
Assert RESET# for a specified period
Write register indexed 00h
Driven SYNC high for specified period without
BIT_CLK
Figure 7. Example of Differential CD Input
Table 66. Reset
42
CODEC Response
Reset all hardware logic and all registers to default
values.
Reset all registers to default values.
Reactivates AC-LINK, no change to register values.
Datasheet
ALC658
Rev. 1.3