AD1986A Analog Devices, AD1986A Datasheet - Page 54

• Manufacturer Part Number: AD1986A
• Description: HD Audio SoundMAX Codec
• Manufacturer: Analog Devices

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AD1986A
MICROPHONE SELECTION/MIXING
4
LINE IN R
LINE IN L
CENTER
MIC 1
MIC 2
LFE
Figure 3. Microphone Selection/Mixing Block Diagram
MIC Select: OMS[2:0]
0x74 D10-D08
DEF=000 (MIC 1/2)
000-MIC 1/2
001-Line In
01x-C/LFE
100-MIC+C/LFE
101-MIC+Line In
110-C/LFE+Line In
111-MIC+C/LFE+Line
NID: 0x27
NID: 0x28
NID: 0x29
NID: 0x2A
NID: 0x0F
Rev. 0 | Page 54 of 56
MIC Boost: AC97
M20 0x0E D6 DEF=0
MGB[1:0] 0x76 D[1:0] DEF=00
MGB
M20
0
1
1
1
1
Azalia
MGBL[1:0] 0x70 D[1:0]
MGBR[1:0} 0x70 D[14:13]
MGBL/R
[1:0]
00
01
10
11
[1:0]
xx
00
01
10
11
G
G
Gain
0dB
+20dB
+10dB
+30dB
reserved
Gain
0dB
+10dB
+20dB
+30dB
NID: 0x2B
MIC Swap: AC97
MS 0x20 D08 DEF=0
2CMIC 0x76 D06 DEF=0
MMIX 0x7A D02 DEF=0
Azalia
MSWP[2:0] 0x7A D02:00
MMIX
MSWP2 MSWP1 MSWP0 Right
0
0
0
0
1
2CMIC MS
0
0
1
1
x
NID: 0x11
0
1
0
1
x
MIC 1
MIC 2
MIC 2
MIC 1
MIC 1+2 MIC 1+2
MIC LEFT
MIC RIGHT
Left
MIC 1
MIC 2
MIC 1
MIC 2