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WM8326 Datasheet(PDF) 193 Page - Wolfson Microelectronics plc

Part # WM8326
Description  Processor Power Management Subsystem
PDF  255 Pages
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Manufacturer  WOLFSON [Wolfson Microelectronics plc]
Direct Link  http://www.wolfsonmicro.com
Logo WOLFSON - Wolfson Microelectronics plc

WM8326 Datasheet(HTML) 193 Page - Wolfson Microelectronics plc

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Production Data
WM8326
w
PD, June 2012, Rev 4.0
193
REGISTER
ADDRESS
BIT
LABEL
DEFAULT
DESCRIPTION
REFER TO
R16474
(405Ah)
DC1 DVS
Control
12:11
DC1_DVS_SR
C [1:0]
00
DC-DC1 DVS Control Source
00 = Disabled
01 = Enabled
10 = Controlled by Hardware DVS1
11 = Controlled by Hardware DVS2
6:0
DC1_DVS_VS
EL [6:0]
000_0000 DC-DC1 DVS Voltage select
0.6V to 1.8V in 12.5mV steps
00h to 08h = 0.6V
09h = 0.6125V
…
48h = 1.4V (see note)
…
67h = 1.7875V
68h to 7Fh = 1.8V
Note - Maximum output voltage selection in 4MHz
switching mode is 48h (1.4V).
Register 405Ah DC1 DVS Control
REGISTER
ADDRESS
BIT
LABEL
DEFAULT
DESCRIPTION
REFER TO
R16475
(405Bh)
DC2 Control
1
15:14
DC2_RATE
[1:0]
10
DC-DC2 Voltage Ramp rate
00 = 1 step every 32us
01 = 1 step every 16us
10 = 1 step every 8us
11 = Immediate voltage change
12
DC2_PHASE
1
DC-DC2 Clock Phase Control
0 = Normal
1 = Inverted
9:8
DC2_FREQ
[1:0]
00
DC-DC2 Switching Frequency
00 = Reserved
01 = 2.0MHz (2.2uH output inductor)
10 = 4.0MHz (1uH output inductor)
11 = Reserved
This field can only be written to by loading configuration
settings from OTP/ICE. In all other cases, this field is
Read Only.
7
DC2_FLT
0
DC-DC2 Output float
0 = DC-DC2 output discharged when disabled
1 = DC-DC2 output floating when disabled
5:4
DC2_SOFT_ST
ART [1:0]
00
DC-DC2 Soft-Start Control
(Duration in each of the 8 startup current limiting steps.)
00 = 32us steps
01 = 64us steps
10 = 128us steps
11 = 256us steps
1:0
DC2_CAP [1:0]
00
DC-DC2 Output Capacitor
00 = Reserved
01 = Reserved
10 = 22uF to 47uF
11 = Reserved



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