alc658 Realtek Semiconductor Corporation, alc658 Datasheet - Page 31

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

6.3.3.
Default: 0000h
6.3.4.
Default: 02F1h
6.3.5.
Default: 0000h
Six-Channel AC’97 2.3 Audio Codec
15:13
15:5
15:5
12:8
4:1
Bit
3:1
Bit
Bit
7:0
0
4
0
Type
Type
Type
R/W
R/W
R/W
MX66 Sense Function Select
MX68 Sense Function Information
MX6A Sense Detail
NA
R
R
R
-
-
Function
Function
Function
Reserved
Function Code bits, FC[3:0]
These bits specify the type of audio function described in page ID 01h MX66, MX68, and MX6A.
0h: FRONT-OUT (pin-35/36)
1h: SURR-OUT (pin-39/41)
2h: CEN/LFE-Out (pin-43/44).
5h: MIC1 In (pin-21)
6h: MIC2 In (pin-22)
7h: LINE In (pin-23/24)
Others: Reserved
Tip or Ring Selection, T/R
This bit sets which jack conductor the sense value is measured from. It is combined with FC[3:0].
0: Tip (Left channel)
1: Ring (Right channel)
Reserved
Information Valid bit, IV
0: After a sense cycle is completed indicates that no information is provided on the sensing method
1: After a sense cycle is completed indicates that information is provided on the sensing method
Clear this bit by writing “1”, writing ‘0’ to this bit has no effect.
Reserved
Function Information Present, FIP
When this bit is set to ‘0’, indicates that the G[4:0], INV, DL[4:0] and ST[2:0] bits are not supported.
Reserved
Sense bits, S[4:0] (Default value depends on sensed result after Cold Reset)
For output devices: (FC[3:0]= 0h, 1h, or 2h)
02h: Not specified or unknown 05h: Powered speaker
Other: Not supported
For input devices: (FC[3:0]= 5h, 6h, or 7h)
12h: Not specified or unknown
Other: Not supported
This field reports the type of output/input peripheral plugged into the jack after sensing.
Always read as 0.
Table 43. MX68 Sense Function Information
Table 42. MX66 Sense Function Select
Table 44. MX6A Sense Detail
13h: Mono Microphone 15h: Stereo Line-In
27
06h: Earphone or passive speaker
Datasheet
ALC658
Rev. 1.3