Rainbow Electronics AT73C246 User Manual
Page 98
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98
11050A–PMAAC–07-Apr-10
AT73C246
Name: MIC_CONTROL
Access:
Read / Write
Address: 0x12
7
6
5
4
3
2
1
0
-
-
MICLDIFF
MICRDIFF
MICDET
ONMICBIAS MICDET_ST
Table 13-28. MIC_CONTROL (0x12) Structure
Bit
Name
Description
Reset value
7:6
-
unused
00
5
MICLDIFF
Left microphone differential configuration
0: Single-ended
1: Differential
0
4
MICRDIFF
Right microphone differential configuration
0: Single-ended
1: Differential
0
3:2
MICDET
Microphone detector threshold
00
1
ONMICBIAS
Microphone bias generator ON / OFF
0: OFF
1: ON
0
0
MICDET_ST
MICBIAS pin microphone detector status bit
0: No microphone detected
1: Microphone detected
0
Table 13-29. Microphone Detector Threshold Selection Table
MICDET
MICBIAS PIN LEVEL (V)
00
AVDD - 0.1
01
AVDD - 0.2
10
AVDD - 0.3
11
AVDD - 0.4
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