WM8321 Datasheet, PDF (191/253 Pages) Wolfson Microelectronics plc – Processor Power Management Subsystem

Production Data
WM8321
REGISTER
ADDRESS
R16473
(4059h) DC1
SLEEP
Control
BIT
15:13
9:8
6:0
LABEL
DEFAULT
DESCRIPTION
DC1_SLP_SLO
T [2:0]
DC1_SLP_MO
DE [1:0]
DC1_SLP_VSE
L [6:0]
000
11
000_0000
DC-DC1 SLEEP Slot select
000 = SLEEP voltage / operating mode transition in
Timeslot 5
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
111 = SLEEP voltage / operating mode transition in
Timeslot 1
If DC-DC1 is assigned to a Hardware Enable Input,
then codes 001-101 select in which timeslot the
converter enters its SLEEP condition.
DC-DC1 SLEEP Operating Mode
00 = Forced Continuous Conduction Mode
01 = Auto Mode (Continuous / Discontinuous
Conduction with Pulse-Skipping)
10 = LDO Mode
11 = Hysteretic Mode
DC-DC1 SLEEP Voltage select
0.6V to 1.8V in 12.5mV steps
00h to 08h = 0.6V
09h = 0.6125V
…
48h = 1.4V (see note)
…
67h = 1.7875V
68h to 7Fh = 1.8V
Register 4059h DC1 SLEEP Control
Note - Maximum output voltage selection in 4MHz
switching mode is 48h (1.4V).
REFER TO
REGISTER
ADDRESS
R16474
(405Ah)
DC1 DVS
Control
BIT
LABEL
12:11 DC1_DVS_SR
C [1:0]
6:0 DC1_DVS_VS
EL [6:0]
DEFAULT
DESCRIPTION
00
000_0000
DC-DC1 DVS Control Source
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
00h to 08h = 0.6V
09h = 0.6125V
…
48h = 1.4V (see note)
…
67h = 1.7875V
w
REFER TO
PD, February 2012, Rev 4.0
191