WM8352 Datasheet, PDF (307/336 Pages) Wolfson Microelectronics plc – Wolfson AudioPlus™ Stereo CODEC with Power Management

Production Data
REGISTER BIT
ADDRESS
LABEL
Register CAh LDO1 Low Power
DEFAULT
DESCRIPTION
0 0000 = 0.9V
WM8352
REFER TO
REGISTER BIT
ADDRESS
R203 (CBh) 14
LDO2
Control
LABEL
DEFAULT
LDO2_SWI
0
10
LDO2_OPFLT
0
4:0 LDO2_VSEL[4:0] 1_1011
1_1010
0_0110
1_0111
Register CBh LDO2 Control
DESCRIPTION
REFER TO
LDO2 Regulator mode
0 = LDO voltage regulator
1 = Current-limited switch (no voltage regulation,
LDO2_VSEL has no effect)
Reset by state machine. Default held in metal mask.
Enable discharge of LDO2 outputs when LDO2 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.
LDO2 Regulator output voltage (when LDO2_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.
REGISTER
ADDRESS
R204 (CCh)
LDO2
Timeouts
BIT
15:14
LABEL
DEFAULT
LDO2_ERRACT[1:0]
00
13:10 LDO2_ENSLOT[3:0]
0000
0000
0001
0100
9:6 LDO2_SDSLOT[3:0] 0000
Register CCh LDO2 Timeouts
DESCRIPTION
Action to take on LDO2 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 LDO2 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 LDO2 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
REFER TO
w
PD, February 2011, Rev 4.4
307