WM8352
Production Data
REFER TO
REGISTER
ADDRESS
BIT
LABEL
DEFAULT
DESCRIPTION
1:0
MCDSCTHR[1:0]
00
Threshold for microphone short-circuit detection
00 = 400μA
01 = 900μA
10 = 1350μA
11 = 1800μA
These threshold currents scale proportionally with
AVDD. The values given are for AVDD=3.3V.
Register 4Ah Mic Bias Control
REGISTER
ADDRESS
BIT
LABEL
DEFAULT
DESCRIPTION
REFER TO
R76 (4Ch)
Output
Control
11
OUT4_VROI
0
0
0
VREF (AVDD/2) to OUT4 resistance
0 = approx 500 ohms
1 = approx 30 kOhms
10
9
OUT3_VROI
OUT2_VROI
VREF (AVDD/2) to OUT3 resistance
0 = approx 500 ohms
1 = approx 30 kOhms
VREF (AVDD/2) to OUT2L and OUT2R
resistance
0 = approx 500 ohms
1 = approx 30 kOhms
8
4
OUT1_VROI
0
0
VREF (AVDD/2) to OUT1L and OUT1R
resistance
0 = approx 500 ohms
1 = approx 30 kOhms
OUTPUT_DRAIN_ENA
Enables a drain on the outputs allowing the
amplifiers to shutdown more quickly.
0 = Shutdown as normal
1 = Sink current from an external capacitor,
allowing faster shutdown.
2
0
OUT2_FB
0
0
Enable Headphone common mode ground
feedback for OUT2
0 = disabled (HPCOM unused)
1 = enabled (common mode feedback through
HPCOM)
OUT1_FB
Enable Headphone common mode ground
feedback for OUT1
0 = disabled (HPCOM unused)
1 = enabled (common mode feedback through
HPCOM)
Register 4Ch Output Control
REGISTER
ADDRESS
BIT
LABEL
DEFAULT
DESCRIPTION
REFER TO
R77 (4Dh)
15
JDL_ENA
0
Jack Detect Enable for inputs connected to IN2L
Jack Detect
0 = disabled
1 = enabled
14
JDR_ENA
0
Jack Detect Enable for input connected to IN2R
0 = disabled
1 = enabled
Register 4Dh Jack Detect
PD, February 2011, Rev 4.4
252
w
WOLFSON [ WOLFSON MICROELECTRONICS PLC ]
