wm9090 Wolfson Microelectronics plc, wm9090 Datasheet - Page 55

• Manufacturer Part Number: wm9090
• Description: Ultra Low Power Audio Subsystem
• Manufacturer: Wolfson Microelectronics plc

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Pre-Production
REGISTER BITS BY ADDRESS
Register 00h Software Reset
Register 01h Power Management (1)
Managemen
Managemen
REGISTER
REGISTER
REGISTER
ADDRESS
ADDRESS
ADDRESS
R0 (00h)
Software
R1 (01h)
R2 (02h)
Power
Power
Reset
t (1)
t (2)
15:0
BIT
BIT
BIT
2:1
12
15
14
13
9
8
3
0
7
TSHUT_OPDIS
HPOUT1R_EN
SPKOUTL_EN
HPOUT1L_EN
TSHUT_ENA
SW_RESET
VMID_RES
OSC_ENA
BIAS_ENA
IN1A_ENA
LABEL
LABEL
LABEL
TSHUT
[15:0]
[1:0]
A
A
A
DEFAULT
DEFAULT
DEFAULT
11
0
0
0
0
0
0
1
1
0
Writing to this register causes a Software Reset.
Speaker Output Enable
0 = Disabled
1 = Enabled
Headphone Output (HPOUTL) input stage enable
0 = Disabled
1 = Enabled
For pop-free operation, this bit should be set as the first
stage of the HPOUTL Enable sequence.
Headphone Output (HPOUTR) input stage enable
0 = Disabled
1 = Enabled
For pop-free operation, this bit should be set as the first
stage of the HPOUTR Enable sequence.
CLK_SYS Oscillator Enable
0 = Disabled
1 = Enabled
VMID Divider Enable and Select
00 = VMID disabled (for OFF mode)
01 = 2 x 50k divider (for normal operation)
10 = 2 x 250k divider (for low power standby)
11 = 2 x 5k divider (for fast start-up)
Enables the Normal bias current generator (for all
analogue functions)
0 = Disabled
1 = Enabled
Thermal shutdown status
0 = Normal temperature
1 = Over temperature
Thermal sensor enable
0 = Disabled
1 = Enabled
Thermal shutdown control
(Causes audio outputs to be disabled if an
overtemperature occurs. The thermal sensor must also
be enabled.)
0 = Disabled
1 = Enabled
IN1A Input PGA Enable
0 = Disabled
1 = Enabled
DESCRIPTION
DESCRIPTION
DESCRIPTION
PP, January 2010, Rev 3.0
REFER TO
REFER TO
REFER TO
WM9090
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