Production Data
WM8326
REGISTER
ADDRESS
BIT
LABEL
DEFAULT
DESCRIPTION
DC-DC1 DVS Control Source
REFER TO
R16474
(405Ah)
DC1 DVS
Control
DC1_DVS_SR
C [1:0]
12:11
00
00 = Disabled
01 = Enabled
10 = Controlled by Hardware DVS1
11 = Controlled by Hardware DVS2
DC-DC1 DVS Voltage select
0.6V to 1.8V in 12.5mV steps
DC1_DVS_VS
EL [6:0]
6:0
000_0000
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 405Ah DC1 DVS Control
REGISTER
ADDRESS
BIT
LABEL
DEFAULT
DESCRIPTION
REFER TO
R16475
(405Bh)
DC2 Control
1
DC2_RATE
[1:0]
DC-DC2 Voltage Ramp rate
00 = 1 step every 32us
01 = 1 step every 16us
10 = 1 step every 8us
15:14
10
11 = Immediate voltage change
DC-DC2 Clock Phase Control
0 = Normal
DC2_PHASE
12
1
1 = Inverted
DC2_FREQ
[1:0]
DC-DC2 Switching Frequency
00 = Reserved
9:8
00
01 = 2.0MHz (2.2uH output inductor)
10 = 4.0MHz (1uH output inductor)
11 = Reserved
This field can only be written to by loading configuration
settings from OTP/ICE. In all other cases, this field is
Read Only.
DC2_FLT
DC-DC2 Output float
7
0
0 = DC-DC2 output discharged when disabled
1 = DC-DC2 output floating when disabled
DC-DC2 Soft-Start Control
(Duration in each of the 8 startup current limiting steps.)
00 = 32us steps
DC2_SOFT_ST
ART [1:0]
5:4
00
01 = 64us steps
10 = 128us steps
11 = 256us steps
DC2_CAP [1:0]
DC-DC2 Output Capacitor
00 = Reserved
1:0
00
01 = Reserved
10 = 22uF to 47uF
11 = Reserved
PD, June 2012, Rev 4.0
193
w
WOLFSON [ WOLFSON MICROELECTRONICS PLC ]
