wm8351 Wolfson Microelectronics plc, wm8351 Datasheet - Page 303
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wm8351
Manufacturer Part Number
wm8351
Description
Wolfson Audioplus? Stereo Codec With Power Management
Manufacturer
Wolfson Microelectronics plc
Datasheet
1.WM8351.pdf
(328 pages)
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Production Data
Register CEh LDO3 Control
Register CFh LDO3 Timeouts
w
REGISTER
REGISTER
ADDRESS
ADDRESS
R206 (CEh)
R207 (CFh)
Timeouts
Control
LDO3
LDO3
15:14
13:10
BIT
BIT
4:0
9:6
14
10
LDO3_VSEL[4:0]
LDO3_ERRACT[1:0]
LDO3_ENSLOT[3:0]
LDO3_SDSLOT[3:0]
LDO3_OPFLT
LDO3_SWI
LABEL
LABEL
DEFAULT
1_1011
1_1111
1_0101
1_1001
DEFAULT
0
0
0000
0010
0000
0000
0000
00
LDO3 Regulator mode
0 = LDO voltage regulator
1 = Current-limited switch (no voltage regulation,
LDO3_VSEL has no effect)
Reset by state machine. Default held in metal mask.
Enable discharge of LDO3 outputs when LDO3 is
disabled
0 = Enabled - Output to be discharged
1 = Disabled - Output is left floating
Note - if LDO Regulators 1, 2, 3 and 4 are all
disabled, then the outputs will all be discharged,
regardless of the LDOn_OPFLT bit.
LDO3 Regulator output voltage (when LDO3_SWI=0)
1 1111 = 3.3V
… (100mV steps)
1 0000 = 1.8V
0 1111 = 1.65V
… (50mV steps)
0 0000 = 0.9V
Reset by state machine. Default held in metal mask.
Action to take on LDO3 fault (as well as
generating an interrupt):
00 = ignore
01 = shut down regulator
10 = shut down system
11 = reserved (shut down system)
Reset by state machine. Default held in metal
mask.
Time slot for LDO3 start-up
0000 = Disabled (do not start up)
0001 = Start-up in time slot 1
… (total 14 slots available)
1110 = Start-up in time slot 14
1111 = Start up on entering ACTIVE
Reset by state machine. Default held in metal
mask.
Time slot for LDO3 shutdown.
0000 = Shut down on entering OFF
0001 = Shutdown in time slot 1
…. (total 14 slots available)
1110 = Shutdown in time slot 14
1111 = Shut down on entering OFF
DESCRIPTION
DESCRIPTION
PD, June 2009, Rev 4.1
REFER TO
REFER TO
WM8351
303
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