Production Data
WM8321
REGISTER
ADDRESS
BIT
LABEL
DEFAULT
DESCRIPTION
100 = Enable in Timeslot 4
REFER TO
101 = Enable in Timeslot 5
110 = Controlled by Hardware Enable 1
111 = Controlled by Hardware Enable 2
DC-DC1 ON Voltage select
DC1_ON_VSE
L [6:2]
4:0
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] controls 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).
Register 7811h DC1 OTP Control
REGISTER
ADDRESS
BIT
LABEL
DEFAULT
DESCRIPTION
REFER TO
R30738
(7812h) DC2
OTP Control
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 Voltage select
DC4_ON_VSE
L [6:2]
12:8
0_0000
DC4_ON_VSEL [6:0] selects the DC-DC3 output
voltage from 0.85V to 3.4V in 25mV steps.
DC4_ON_VSEL [6:2] controls 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
DC3_ON_SLO
T [2:0]
DC-DC3 ON Slot select
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
7:5
000
PD, February 2012, Rev 4.0
227
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WOLFSON [ WOLFSON MICROELECTRONICS PLC ]
