wm8352 Wolfson Microelectronics plc, wm8352 Datasheet - Page 252

• Manufacturer Part Number: wm8352
• Description: Wolfson Audioplus? Stereo Codec With Power Management
• Manufacturer: Wolfson Microelectronics plc

WM8352
Register 4Ah Mic Bias Control
REGISTER
Register 4Ch Output Control
Register 4Dh Jack Detect
w
REGISTER
ADDRESS
REGISTER
ADDRESS
ADDRESS
Jack Detect
R76 (4Ch)
R77 (4Dh)
Control
Output
BIT
BIT
BIT
11
10
1:0
9
8
4
2
0
15
14
OUTPUT_DRAIN_ENA
MCDSCTHR[1:0]
JDR_ENA
JDL_ENA
LABEL
LABEL
OUT4_VROI
OUT3_VROI
OUT2_VROI
OUT1_VROI
OUT2_FB
OUT1_FB
LABEL
DEFAULT
DEFAULT
0
0
00
DEFAULT
0
0
0
0
0
0
0
Jack Detect Enable for inputs connected to IN2L
0 = disabled
1 = enabled
Jack Detect Enable for input connected to IN2R
0 = disabled
1 = enabled
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.
VREF (AVDD/2) to OUT4 resistance
0 = approx 500 ohms
1 = approx 30 kOhms
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
VREF (AVDD/2) to OUT1L and OUT1R
resistance
0 = approx 500 ohms
1 = approx 30 kOhms
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.
Enable Headphone common mode ground
feedback for OUT2
0 = disabled (HPCOM unused)
1 = enabled (common mode feedback through
HPCOM)
Enable Headphone common mode ground
feedback for OUT1
0 = disabled (HPCOM unused)
1 = enabled (common mode feedback through
HPCOM)
DESCRIPTION
DESCRIPTION
DESCRIPTION
PD, June 2009, Rev 4.1
REFER TO
REFER TO
REFER TO
Production Data
252