Production Data
WM8321
REGISTER
ADDRESS
BIT
LABEL
DEFAULT
DESCRIPTION
REFER TO
DC4_OVP
DC-DC4 Overvoltage Protection
0 = Disabled
7
0
1 = Enabled
Register 4065h DC4 Control 2
REGISTER
ADDRESS
BIT
LABEL
DEFAULT
DESCRIPTION
REFER TO
R16486
(4066h) DC4
ON Config
DC4_ON_SLO
T [2:0]
DC-DC4 ON Slot select
15:13
000
000 = Do not enable
001 = Enable in Timeslot 1
010 = Enable in Timeslot 2
011 = Enable in Timeslot 3
100 = Enable in Timeslot 4
101 = Enable in Timeslot 5
110 = Controlled by Hardware Enable 1
111 = Controlled by Hardware Enable 2
DC-DC4 ON Operating Mode
00 = Forced Continuous Conduction Mode
DC4_ON_MOD
E [1:0]
9:8
6:2
01
01 = Auto Mode (Continuous / Discontinuous
Conduction with Pulse-Skipping)
10 = LDO Mode
11 = Hysteretic Mode
DC-DC4 ON Voltage select
DC4_ON_VSE
L [6:2]
0_0000
DC4_ON_VSEL [6:0] selects the DC-DC4 output
voltage from 0.85V to 3.4V in 25mV steps.
DC4_ON_VSEL [6:2] also exist in ICE/OTP memory,
controlling the voltage in 100mV steps.
DC4_ON_VSEL [6:0] is coded as follows:
00h = 0.85V
01h = 0.875V
…
65h = 3.375V
66h to 7Fh = 3.4V
DC-DC4 ON Voltage select
DC4_ON_VSE
L [1:0]
1:0
00
DC4_ON_VSEL [6:0] selects the DC-DC4 output
voltage from 0.85V to 3.4V in 25mV steps.
See DC4_ON_VSEL [6:2] for definition.
Register 4066h DC4 ON Config
REGISTER
ADDRESS
BIT
LABEL
DEFAULT
DESCRIPTION
REFER TO
R16487
(4067h) DC4
SLEEP
15:13 DC4_SLP_SLO
T [2:0]
000
DC-DC4 SLEEP Slot select
000 = SLEEP voltage / operating mode transition in
Timeslot 5
Control
001 = Disable in Timeslot 5
010 = Disable in Timeslot 4
011 = Disable in Timeslot 3
100 = Disable in Timeslot 2
101 = Disable in Timeslot 1
110 = SLEEP voltage / operating mode transition in
Timeslot 3
PD, February 2012, Rev 4.0
199
w
WOLFSON [ WOLFSON MICROELECTRONICS PLC ]
