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LP3971 Datasheet(PDF) 27 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) 27 Page - Texas Instruments

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LP3971
www.ti.com
SNVS432V – JANUARY 2006 – REVISED MAY 2013
Bit
Access
Name
Description
6
R/W
L4EC
Connects LDO4 enable to SYS_EN or PWR_EN Logic Control pin
0 = LDO 4 enable connected to PWR_EN
1 = LDO 4 enable connected to SYS_EN
5
R/W
LDO5_EN
LDO_5 Output Voltage Enable
0 = LDO5 Supply Output Disabled
1 = LDO5 Supply Output Enabled
4
R/W
LDO4_EN
LDO_4 Output Voltage Enable
0 = LDO4 Supply Output Disabled
1 = LDO4 Supply Output Enabled
3
R/W
LDO3_EN
LDO_3 Output Voltage Enable
0 = LDO3 Supply Output Disabled
1 = LDO3 Supply Output Enabled
2
R/W
LDO2_EN
LDO_2 Output Voltage Enable
0 = LDO2 Supply Output Disabled
1 = LDO2 Supply Output Enabled
1
R/W
LDO1_EN
LDO_1 Output Voltage Enable
0 = LDO1 Supply Output Disabled
1 = LDO1 Supply Output Enabled
0
—
—
Reserved
LDO OUTPUT VOLTAGE STATUS REGISTER (LDOVS) 8H'13
Bit
7
6
5
4
3
2
1
0
Designation
LDOS_OK
N/A
LDO5_0K
LDO4_OK
LDO3_OK
LDO2_OK
LDO1_OK
N/A
Reset Value
0
0
0
0
0
0
0
0
LDO OUTPUT VOLTAGE STATUS REGISTER (LDOVS) 8H'13 DEFINITIONS
Bit
Access
Name
Description
7
R
LDO_OK
LDO 1–5 Supply Output Voltage Status
0 = (LDO 1–5) output voltage <90% of selected value
1 = (LDO 1–5) output voltage >90% of selected value
6
—
—
Reserved
5
R
LDO5_OK
LDO_5 Output Voltage Status
0 = (VCC_LDO5) output voltage <90% of selected value
1 = (VCC_LDO5) output voltage >90% of selected value
4
R
LDO4_OK
LDO_4 Output Voltage Status
0 = (VCC_LDO4) output voltage <90% of selected value
1 = (VCC_LDO4) output voltage >90% of selected value
3
R
LDO3_OK
LDO_3 Output Voltage Status
0 = (VCC_LDO3) output voltage <90% of selected value
1 = (VCC_LDO3) output voltage >90% of selected value
2
R
LDO2_OK
LDO_2 Output Voltage Status
0 = (VCC_LDO2) output voltage <90% of selected value
1 = (VCC_LDO2) output voltage >90% of selected value
1
R
LDO1_OK
LDO_1 Output Voltage Status
0 = (VCC_LDO1) output voltage <90% of selected value
1 = (VCC_LDO1) output voltage >90% of selected value
0
—
—
Reserved
VOLTAGE CHANGE CONTROL REGISTER 1 (VCC1) 8H'20
Bit
7
6
5
4
3
2
1
0
Designation
B3VS
B3GO
B2VS
B2GO
Reserved
B2VS
B2GO
Reset Value
0
0
0
0
0
0
0
0
Copyright © 2006–2013, Texas Instruments Incorporated
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Product Folder Links: LP3971



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