wm8351 Wolfson Microelectronics plc, wm8351 Datasheet - Page 291
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 B1h DCDC Active options
Register B2h DCDC Sleep options
Register B3h Power-check comparator
w
REGISTER
REGISTER
REGISTER
Power-check
DCDC Sleep
ADDRESS
ADDRESS
ADDRESS
R178 (B2h)
R179 (B3h)
comparator
options
BIT
BIT
BIT
6:4
2:0
14
12
3
2
0
PCCMP_OFF_THR[2:0]
PCCMP_ON_THR[2:0]
PCCOMP_HIB_MODE
DC4_SLEEP
DC3_SLEEP
DC1_SLEEP
PCCMP_ERRACT
LABEL
LABEL
LABEL
DEFAULT
DEFAULT
0
0
0
DEFAULT
010
101
0
0
DC-DC 4 Sleep mode
0 = Normal DC-DC operation
1 = Select LDO mode
Reset by state machine.
DC-DC 3 Sleep mode
0 = Normal DC-DC operation
1 = Select LDO mode
Reset by state machine.
DC-DC 1 Sleep mode
0 = Normal DC-DC operation
1 = Select LDO mode
Reset by state machine.
0 = Select Standby mode
1 = Select Active mode
Reset by state machine.
Action when supply falls below
PCCMP_OFF_THR level
0 = Generate critical supply interrupt only
1 = Generate interrupt and trigger hard shut
down
Reset by state machine.
Function of Hyst Comp in the hibernate state
0 = Hyst Comp is not used in hibernate state
1 = Hyst comp is on in the hibernate state
Power check comparator critical battery
("system turn off") threshold value
000 = 2.9V
001 = 3.0V
…
111 = 3.6V
Protected by security key. Default held in metal
mask.
Power check comparator ("system turn on")
threshold value
000 = 2.9V
001 = 3.0V
…
111 = 3.6V
Protected by security key. Default held in metal
mask.
DESCRIPTION
DESCRIPTION
DESCRIPTION
PD, June 2009, Rev 4.1
REFER TO
REFER TO
REFER TO
WM8351
291
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