WM8352
Production Data
REGISTER
ADDRESS
BIT
LABEL
DEFAULT
DESCRIPTION
DC-DC2 Converter Mode
REFER TO
R183 (B7h)
DCDC2
Control
14
DC2_MODE
0
0 = Boost mode
1 = Switch mode
Reset by state machine.
DC-DC2 Hibernate behaviour:
0 = Continue as in Active state
1 = Disable converter output
Reset by state machine.
DC-DC2 Hibernate signal select
00 = HIBERNATE register bit
01 = L_PWR1
12
DC2_HIB_MODE
0
9:8
DC2_HIB_TRIG[1:0]
00
10 = L_PWR2
11 = L_PWR3
Note that Hibernate is also selected when a GPIO
Hibernate input is asserted.
Reset by state machine.
DC-DC2 peak current limit select
0 = Higher peak current
1 = Lower peak current
6
4
DC2_ILIM
0
1
Reset by state machine. Default held in metal
mask.
DC2_RMPH
DC-DC2 compensation ramp
{DC2_RMPH, DC2_RMPL}
00 = 20V < VOUT ≤ 30V
01 = 10V < VOUT ≤ 20V
10 = 5V < VOUT ≤ 10V
11 = VOUT ≤ 5V (will be chosen automatically if
DC2_FBSRC=11)
Reset by state machine. Default held in metal
mask.
3
DC2_RMPL
1
DC-DC2 compensation ramp
{DC2_RMPH, DC2_RMPL}
00 = 20V < VOUT ≤ 30V
01 = 10V < VOUT ≤ 20V
10 = 5V < VOUT ≤ 10V
11 = VOUT ≤ 5V (will be chosen automatically if
DC2_FBSRC=11)
Reset by state machine. Default held in metal
mask.
1:0
DC2_FBSRC[1:0]
00
DC-DC2 voltage feedback selection
00 = voltage feedback (using external resistor
divider on pin FB2)
01 = current sink ISINKA used as feedback
10 = current sink ISINKB used as feedback
11 = voltage feedback (using internal resistor
divider on pin USB)
Reset by state machine. Default held in metal
mask.
Register B7h DCDC2 Control
PD, February 2011, Rev 4.4
296
w
WOLFSON [ WOLFSON MICROELECTRONICS PLC ]
