wm8350 Wolfson Microelectronics plc, wm8350 Datasheet - Page 305
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wm8350
Manufacturer Part Number
wm8350
Description
Wolfson Audioplus? Stereo Codec With Power Management
Manufacturer
Wolfson Microelectronics plc
Datasheet
1.WM8350.pdf
(345 pages)
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Production Data
REGISTER
Register BFh DCDC4 Low Power
w
REGISTER
ADDRESS
ADDRESS
R192 (C0h)
DCDC5
Control
BIT
BIT
9:8
1:0
14
12
6
4
3
DC5_HIB_TRIG[1:0]
DC5_FBSRC[1:0]
DC5_HIB_MODE
DC5_MODE
DC5_RMPH
DC5_RMPL
DC5_ILIM
LABEL
LABEL
DEFAULT
DEFAULT
00
00
0
0
0
0
1
DC-DC5 Converter Mode
0 = Boost mode
1 = Switch mode
Reset by state machine.
DC-DC5 Hibernate behaviour:
0 = Continue as in Active state
1 = Disable converter output
Reset by state machine.
DC-DC5 Hibernate signal select
00 = HIBERNATE register bit
01 = L_PWR1
10 = L_PWR2
11 = L_PWR3
Note that Hibernate is also selected when a GPIO
Hibernate input is asserted.
Reset by state machine.
DC-DC5 peak current limit select
0 = Higher peak current
1 = Lower peak current
Reset by state machine. Default held in metal
mask.
DC-DC5 compensation ramp
{DC5_RMPH, DC5_RMPL}
00 = 20V < VOUT ≤ 30V
01 = 10V < VOUT ≤ 20V
10 = 5V < VOUT ≤ 10V
11 = VOUT ≤ 5V (will be chosen automatically if
DC5_FBSRC=11)
Reset by state machine. Default held in metal
mask.
DC-DC5 compensation ramp
{DC5_RMPH, DC5_RMPL}
00 = 20V < VOUT ≤ 30V
01 = 10V < VOUT ≤ 20V
10 = 5V < VOUT ≤ 10V
11 = VOUT ≤ 5V (will be chosen automatically if
DC5_FBSRC=11)
Reset by state machine. Default held in metal
mask.
DC-DC5 voltage feedback selection
00 = voltage feedback (using external resistor
divider on pin FB5)
01 = current sink ISINKA used as feedback
101 0110 = 3.0V
100 1110 = 2.8V
……
010 0110 = 1.8V
000 1110 = 1.2V
000 0110 = 1.0V
000 0000 = 0.85V
DESCRIPTION
DESCRIPTION
PD, June 2009, Rev 4.1
REFER TO
REFER TO
WM8350
305
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