wm8400 Wolfson Microelectronics plc, wm8400 Datasheet - Page 186

• Manufacturer Part Number: wm8400
• Description: Wolfson Audioplustm Hi-fi Audio Codec And Power Management Unit For Mobile Multimedia
• Manufacturer: Wolfson Microelectronics plc

WM8400
w
R68 (44h)
LDO4 Control
R69 (45h)
Reserved
R70 (46h)
DCDC1
Control 1
REGISTER
ADDRESS
15
14
13:12
11
10
9:5
4:0
15:0
15
14
13
12
11
10
9:8
7
6:0
BIT
LDO4_ENA
LDO4_SWI
LDO4_ERRACT
LDO4_HIB_MODE
LDO4_VIMG [4:0]
LDO4_VSEL [4:0]
DC1_ENA
DC1_ACTIVE
DC1_SLEEP
DC1_ERRACT
DC1_HIB_MODE
DC1_SOFTST [1:0]
DC1_OV_PROT
DC1_VSEL [6:0]
LABEL
0b
0b
00b
0b
0b
00000b
00000b
0000h
0b
1b
0b
0b
0b
1b
00b
0b
0000000b
DEFAULT
LDO4 Software enable
0 = Disabled
1 = Enabled
LDO4 Software enable
0 = LDO Regulator
1 = Current Limited switch
Reserved - Do Not Change
LDO4 Undervoltage Error Action
0 = Generate IRQ only
1 = Generate IRQ, Assert NRST, De-assert PWRGOOD,
Shutdown device
LDO4 Hibernate Mode
0 = LDO4 disabled in Hibernate
1 = LDO4 enabled in Hibernate
LDO4 Hibernate Mode output voltage
0.9v to 1.6v in 0.05v steps,
1.7 to 3.3v in 0.10v steps
See Table 87 for details.
LDO4 voltage select
0.9v to 1.6v in 0.05v steps,
1.7 to 3.3v in 0.10v steps
See Table 87 for details
Reserved - Do Not Change
DC1 Software enable
0 = Disabled
1 = Enabled
DC1 Active Mode select
0 = Standby/Hysteretic Mode selected
1 = Active Mode selected
DC1 Sleep Mode select
0 = Not selected
1 = Selected
Reserved - Do Not Change
DC1 Undervoltage Error Action
0 = Generate IRQ only
1 = Generate IRQ, Assert NRST, De-assert PWRGOOD,
Shutdown device
DC1 Hibernate Mode
0 = DC1 disabled in Hibernate
1 = DC1 enabled (LDO mode) in Hibernate
DC1 Soft Start
00 = No soft start
01 = 400us steps
10 = 4ms steps
11 = 40ms steps
DC1 Overvoltage Protection
0 = Disabled
1 = Enabled
DC1 voltage select
0.85v to 4.025v in 0.025v steps
See Table 88 for details
DESCRIPTION
PP, April 2009, Rev 3.0
Pre-Production
186