AD1986BSTZ datasheet(49/52 Pages) AD

49 / 52 page

Preliminary Technical Data

AD1986

Rev. 0 | Page 49 of 52

MICROPHONE SELECTION/MIXING

MIC 1

CENTER

LINE IN L

MIC 2

LFE

LINE IN R

MIC LEFT

MIC RIGHT

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: 0x0F

NID: 0x27

NID: 0x28

NID: 0x29

NID: 0x2A

NID: 0x2B

NID: 0x11

MIC Boost: AC97

M20 0x0E D6 DEF=0

MGB[1:0] 0x76 D[1:0] DEF=00

MGB

M20

[1:0]

Gain

0dB

+20dB

+10dB

+30dB

reserved

Azalia

MGBL[1:0] 0x70 D[1:0]

MGBR[1:0} 0x70 D[14:13]

MGBL/R

[1:0]

Gain

0dB

+10dB

+20dB

+30dB

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

2CMIC

MSWP2 MSWP1

MSWP0 Right

Left

MIC 1

MIC 2

MIC 1

MIC 2

MIC 1+2

Figure 10. Microphone Selection/Mixing Block Diagram

AD1986BSTZ Datasheet(PDF) 49 Page - Analog Devices

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