alc850 Realtek Semiconductor Corporation, alc850 Datasheet - Page 36

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

7.4. Extension Registers
7.4.1.
Default: 0000h
Eight Channel AC’97 2.3 Audio Codec
14:12
10:8
6:4
3:2
1:0
Bit
15
11
7
MX76 GPIO & Interrupt Control
Type
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Function
Mute Control of Front-MIC1/2
0: Normal
1: Mute (Default)
Pin-23/24 UIO2 Function Selection
000: LINE IN-L/R (Default)
001: MIC1/MIC2
010: Surr
011: Detection circuit
100: NC (Floating)
Vrefout3 Disable
0: Vrefout3 is driven by the internal reference
1: Vrefout3 is in high-Z mode (Default)
Pin-35/36 UIO1 Function Selection
000: LINE IN-L/R
001: MIC1/MIC2
010: FRONT-OUT (Default)
011: Detection circuit
100: NC (Floating)
Vrefout2 Disable
0: Vrefout2 is driven by the internal reference
1: Vrefout2 is in high-Z mode (Default)
Pin-21/22 UIO3 Function Selection
000: LINE IN-L/R
001: MIC1/MIC2 (Default)
010: Surr
011: Detection circuit
100: NC (Floating)
101: Cen/LFE
Impedance Detect for Pad 23/24 (FO-control 2, 3, and 4)
01: Via 100ohm path
10: Via 2.2K path
11: Via 47K path
00: All path Floating (Default)
Software must turn on Surround AMP and turn off SURR-OUT control before detecting
Impedance Detect for Pad 21/22 (FO-control 2, 3, and 4)
01: Via 100ohm path
10: Via 2.2K path
11: Via 47K path
00: All path Floating (Default)
Software must turn on Surround AMP and turn off SURR-OUT control before detecting
Table 42. MX76 GPIO & Interrupt Control
28
Track ID: JATR-1076-21 Rev. 1.4
Datasheet
ALC850