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WM8325 Datasheet(PDF) 70 Page - Cirrus Logic

Part # WM8325
Description  Processor Power Management Subsystem
PDF  254 Pages
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Manufacturer  CIRRUS [Cirrus Logic]
Direct Link  http://www.cirrus.com
Logo CIRRUS - Cirrus Logic

WM8325 Datasheet(HTML) 70 Page - Cirrus Logic

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WM8325
Production Data
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PD, February 2012, Rev 4.0
70
15.11 POWER MANAGEMENT REGISTER DEFINITIONS
15.11.1 DC-DC CONVERTER AND LDO REGULATOR ENABLE
The Enable and Status register bits for the DC-DC Converters and LDO Regulators are defined in
Table 31.
ADDRESS
BIT
LABEL
DEFAULT
DESCRIPTION
R16464 (4050h)
DCDC Enable
3:0
DCm_ENA
0
DC-DCm Enable request
0 = Disabled
1 = Enabled
(Note that the actual status is
indicated in DCm_STS)
R16465 (4051h)
LDO Enable
10:0
LDOn_ENA
0
LDOn Enable request
0 = Disabled
1 = Enabled
(Note that the actual status is
indicated in LDOn_STS)
R16466 (4052h)
DCDC Status
3:0
DCm_STS
0
DC-DCm Status
0 = Disabled
1 = Enabled
R16467 (4053h)
LDO Status
10:0
LDOn_STS
0
LDOn Status
0 = Disabled
1 = Enabled
Notes:
1.
n
is a number between 1 and 11 that identifies the individual LDO Regulator.
2.
m
is a number between 1 and 4 that identifies the individual DC-DC Converter.
Table 31 DC-DC Converter and LDO Regulator Control
The Enable and Status register bits for the External Power Enable (EPE) Controls are defined in
Table 32.
ADDRESS
BIT
LABEL
DEFAULT
DESCRIPTION
R16464 (4050h)
DCDC Enable
7
EPE2_ENA
0
EPE2 Enable request
0 = Disabled
1 = Enabled
(Note that the actual status is
indicated in EPE2_STS)
6
EPE1_ENA
0
EPE1 Enable request
0 = Disabled
1 = Enabled
(Note that the actual status is
indicated in EPE1_STS)
R16466 (4052h)
DCDC Status
7
EPE2_STS
0
EPE2 Status
0 = Disabled
1 = Enabled
6
EPE1_STS
0
EPE1 Status
0 = Disabled
1 = Enabled
Table 32 External Power Enable (EPE) Control
15.11.2 DC-DC SYNCHRONOUS BUCK CONVERTER CONTROL
The register controls for configuring the DC-DC synchronous buck converters 1-4 are defined in Table
33.



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