WM8321
Production Data
REGISTER
ADDRESS
BIT
LABEL
DEFAULT
DESCRIPTION
REFER TO
R16481
(4061h) DC3
Control 2
DC3_ERR_AC
T [1:0]
DC-DC3 Error Action (Undervoltage)
00 = Ignore
15:14
00
01 = Shut down converter
10 = Shut down system (Device Reset)
11 = Reserved
Note that an Interrupt is always raised.
DC3_HWC_SR
C [1:0]
DC-DC3 Hardware Control Source
00 = Disabled
12:11
00
01 = Hardware Control 1
10 = Hardware Control 2
11 = Hardware Control 1 or 2
DC-DC3 Hardware Control Voltage select
0 = Set by DC3_ON_VSEL
1 = Set by DC3_SLP_VSEL
DC3_HWC_VS
EL
10
0
DC3_HWC_M
ODE [1:0]
DC-DC3 Hardware Control Operating Mode
00 = Forced Continuous Conduction Mode
01 = Disabled
9:8
11
10 = LDO Mode
11 = Hysteretic Mode
DC3_OVP
DC-DC3 Overvoltage Protection
0 = Disabled
7
0
1 = Enabled
Register 4061h DC3 Control 2
REGISTER
ADDRESS
BIT
LABEL
DEFAULT
DESCRIPTION
REFER TO
R16482
(4062h) DC3
ON Config
DC3_ON_SLO
T [2:0]
DC-DC3 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-DC3 ON Operating Mode
00 = Forced Continuous Conduction Mode
DC3_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-DC3 ON Voltage select
DC3_ON_VSE
L [6:2]
0_0000
DC3_ON_VSEL [6:0] selects the DC-DC3 output
voltage from 0.85V to 3.4V in 25mV steps.
DC3_ON_VSEL [6:2] also exist in ICE/OTP memory,
controlling the voltage in 100mV steps.
DC3_ON_VSEL [6:0] is coded as follows:
00h = 0.85V
01h = 0.875V
…
65h = 3.375V
PD, February 2012, Rev 4.0
196
w
WOLFSON [ WOLFSON MICROELECTRONICS PLC ]
