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LP3971 Datasheet(PDF) 23 Page - Texas Instruments

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Part # LP3971
Description  Power Management Unit for Advanced Application Processors
PDF  52 Pages
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Manufacturer  TI1 [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI1 - Texas Instruments

LP3971 Datasheet(HTML) 23 Page - Texas Instruments

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LP3971
www.ti.com
SNVS432V – JANUARY 2006 – REVISED MAY 2013
Register
Register
Read/
Register Description
Address
Name
Write
8h'0B
BBCC
R/W
Backup Battery Charger Control Register
8h'0E
SCR2
R/W
System Control Register 2
8h'10
BOVEN
R/W
Buck Output Voltage Enable Register
8h'11
BOVSR
R
Buck Output Voltage Status Register
8h'12
LDOEN
R/W
LDO Output Voltage Enable Register
8h'13
LDOVS
R
LDO Output Voltage Status Register
8h'20
VCC1
R/W
Voltage Change Control Register 1
8h'23
B1TV1
R/W
Buck 1 Target Voltage 1 Register
8h'24
B1TV2
R/W
Buck 1 Target Voltage 2 Register
8h'25
B1RC
R/W
Buck 1 Ramp Control
8h'29
B2TV1
R/W
Buck 2 Target Voltage 1 Register
8h'2A
B2TV2
R/W
Buck 2 Target Voltage 2 Register
8h'2B
B2RC
R/W
Buck 2 Voltage Ramp Control
8h'32
B3TV1
R/W
Buck 3 Target Voltage 1 Register
8h'33
B3TV2
R/W
Buck 3 Target Voltage 2 Register
8h'34
B3RC
R/W
Buck 3 Voltage Ramp Control
8h'38
BFR
R/W
Buck Function Register
8h'39
L21VCR
R/W
LDO2 & 1 Voltage Control Registers
8h'3A
L43VCR
R/W
LDO4 & LDO3 Voltage Control Registers
8h'3B
L5VCR
R/W
LDO5 Voltage Control Registers
INTERRUPT STATUS REGISTER (ISR) 8H'02
Bit
7
6
5
4
3
2
1
0
Designation
T100
T125
GPI2
GPI1
WUP3
WUP2
WUPT
WUPS
Reset Value
0
0
0
0
0
0
0
0
INTERRUPT STATUS REGISTER (ISR) 8H'02 DEFINITIONS
Bit
Access
Name
Description
7
—
—
Reserved
6
R
T125
Status bit for thermal warming PMIC T>125°C
0 = PMIC Temp. <125°C
1 = PMIC Temp. >125°C
5
R
GPI2
Status bit for the input read in from GPIO 2 when set as Input
0 = GPI2 Logic Low
1 = GPI2 Logic High
4
R
GPI1
Status bit for the input read in from GPIO 1 when set as Input
0 = GPI1 Logic Low
1 = GPI1 Logic High
3
R
WUP3
PWR_ON Pin Long Pulse Wake Up Status
0 = 1 No wake up event
1 = Long pulse wake up event
2
R
WUP2
PWR_ON Pin Short Pulse Wake Up Status
0 = No wake up event
1 = Short pulse wake up event
1
R
WUPT
TEST_JIG Pin Wake Up Status
0 = No wake up event
1 = Wake up event
0
R
WUPS
SPARE Pin Wake Up Status
0 = No wake up event
1 = Wake up event
Copyright © 2006–2013, Texas Instruments Incorporated
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Product Folder Links: LP3971



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