alc850 Realtek Semiconductor Corporation, alc850 Datasheet - Page 51

• Manufacturer Part Number: alc850
• Description: Eight Channel Ac?97 2.3 Audio Codec
• Manufacturer: Realtek Semiconductor Corporation

10.3. Reset
There are three types of reset operations: Cold, Register, and Warm.
The AC’97 controller should drive SYNC and SDATA_OUT low during the period of RESET# assertion
to guarantee that the ALC850 has reset successfully.
10.4. CD Input
For noise cancellation reasons, it is important to pay attention to differential CD input. Below is an
example of differential CD input.
Eight 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 10. Example of Differential CD Input
Table 62. Reset
43
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
Track ID: JATR-1076-21 Rev. 1.4
Datasheet
ALC850