wm8352 Wolfson Microelectronics plc, wm8352 Datasheet - Page 305

• Manufacturer Part Number: wm8352
• Description: Wolfson Audioplus? Stereo Codec With Power Management
• Manufacturer: Wolfson Microelectronics plc

Production Data
Register C7h Limit Switch Control
w
REGISTER
REGISTER
ADDRESS
ADDRESS
Limit Switch
R199 (C7h)
R200 (C8h)
Control
Control
LDO1
15:14
13:10
BIT
BIT
4:0
9:6
14
10
4
1
0
LDO1_VSEL[4:0]
LS_ERRACT[1:0]
LS_ENSLOT[3:0]
LS_SDSLOT[3:0]
LS_HIB_MODE
LS_HIB_PROT
LDO1_OPFLT
LDO1_SWI
LS_PROT
LABEL
LABEL
DEFAULT
DEFAULT
1_1100
0_0010
1_1100
1_1101
0000
0000
0
0
00
0
1
1
LDO1 Regulator mode
0 = LDO voltage regulator
1 = Current-limited switch (no voltage regulation,
LDO1_VSEL has no effect)
Reset by state machine. Default held in metal mask.
Enable discharge of LDO1 outputs when LDO1 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.
LDO1 Regulator output voltage (when LDO1_SWI=0)
1 1111 = 3.3V
… (100mV steps)
1 0000 = 1.8V
0 1111 = 1.65V
… (50mV steps)
Current limit detection behaviour
00 = ignore
01 = disable switch
10 = shut down system
11 = shut down system
Reset by state machine. Default held in metal mask.
Time slot for Limit Switch 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 Limit Switch 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
Limit switch hibernate mode setting
0 = disabled
1 = leave setting as in Active mode
Controls the bulk detection circuit when Limit Switch
is disabled in Hibernate mode.
0 = bulk detection disabled
1 = bulk detection enabled
Controls the bulk detection circuit when Limit Switch
is disabled in Active mode.
0 = bulk detection disabled
1 = bulk detection enabled
DESCRIPTION
DESCRIPTION
PD, June 2009, Rev 4.1
REFER TO
REFER TO
WM8352
305