WM8321
Production Data
REFER TO
REGISTER
ADDRESS
BIT
LABEL
DEFAULT
DESCRIPTION
11 = Hysteretic Mode
DC1_HC_THR
[2:0]
DC-DC1 High Current threshold
000 = 125mA
6:4
000
001 = 250mA
010 = 375mA
011 = 500mA
100 = 625mA
101 = 750mA
110 = 875mA
111 = 1000mA
DC1_HC_IND_
ENA
DC-DC1 High Current detect enable
0 = Disabled
0
0
1 = Enabled
Register 4057h DC1 Control 2
REGISTER
ADDRESS
BIT
LABEL
DEFAULT
DESCRIPTION
REFER TO
R16472
(4058h) DC1
ON Config
DC1_ON_SLO
T [2:0]
DC-DC1 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-DC1 ON Operating Mode
00 = Forced Continuous Conduction Mode
DC1_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-DC1 ON Voltage select
DC1_ON_VSE
L [6:2]
0_0000
DC1_ON_VSEL [6:0] selects the DC-DC1 output
voltage from 0.6V to 1.8V in 12.5mV steps.
DC1_ON_VSEL [6:2] also exist in ICE/OTP memory,
controlling the voltage in 50mV steps.
DC1_ON_VSEL [6:0] is coded as follows:
00h to 08h = 0.6V
09h = 0.6125V
…
48h = 1.4V (see note)
…
67h = 1.7875V
68h to 7Fh = 1.8V
Note - Maximum output voltage selection in 4MHz
switching mode is 48h (1.4V).
DC1_ON_VSE
L [1:0]
DC-DC1 ON Voltage select
1:0
00
DC1_ON_VSEL [6:0] selects the DC-DC1 output
voltage from 0.6V to 1.8V in 12.5mV steps.
See DC1_ON_VSEL [6:2] for definition.
Register 4058h DC1 ON Config
PD, February 2012, Rev 4.0
190
w
WOLFSON [ WOLFSON MICROELECTRONICS PLC ]
