wm8400 Wolfson Microelectronics plc, wm8400 Datasheet - Page 104

• Manufacturer Part Number: wm8400
• Description: Wolfson Audioplustm Hi-fi Audio Codec And Power Management Unit For Mobile Multimedia
• Manufacturer: Wolfson Microelectronics plc

WM8400
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Table 65 MICBIAS Current Detect Control
R18 (12h)
R22 (16h)
R23 (17h)
R58 (3Ah)
REGISTER
ADDRESS
10
9
7:6
5:3
2
BIT
10
10
9
9
MIC1SHRT
(rr)
MIC1DET
(rr)
MIC1SHRT_IRQ_ENA
MIC1DET_IRQ_ENA
MIC1SHRT_POL
MIC1DET_POL
MCDSCTH [1:0]
MCDTHR [2:0]
MCD
LABEL
DEFAULT
000b
00b
0b
0b
0b
0b
0b
0b
0b
MICBIAS Short Circuit CODEC interrupt
0 = interrupt not set
1 = interrupt is set
This bit is latched once set. The
MIC1SHRT_POL bit determines the
polarity of the input event to set this bit.
It is cleared when a ‘1’ is written.
MICBIAS Current Detect CODEC
interrupt
0 = interrupt not set
1 = interrupt is set
This bit is latched once set. The
MIC1DET_POL bit determines the
polarity of the input event to set this bit.
It is cleared when a ‘1’ is written.
MICBIAS short circuit detect CODEC
IRQ Enable
0 = disabled
1 = enabled
MICBIAS current detect CODEC IRQ
Enable
0 = disabled
1 = enabled
MICBIAS short circuit detect polarity
0 = Non-inverted
1 = Inverted
MICBIAS current detect polarity
0 = Non-inverted
1 = Inverted
MICBIAS Short Circuit Detect Threshold
00 = 450uA
01 = 850uA
10 = 1250uA
11 = 1650uA
These values are for AVDD=3.0V
MICBIAS Current Detect Threshold
000 = 220uA
001 = 330uA
010 = 440uA
011 = 550uA
100 = 660uA
101 = 770uA
110 = 880uA
111 = 990uA
These values are for AVDD=3.0V
MICBIAS Current and Short Circuit
Detect Enable
0 = disabled
1 = enabled
PP, April 2009, Rev 3.0
DESCRIPTION
Pre-Production
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