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LP3972 Datasheet(PDF) 41 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor. Click here to check the latest version.
No. de pieza LP3972
Descripción Electrónicos  Power Management Unit for Advanced Application Processors
PDF  59 Pages
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Fabricante Electrónico  NSC [National Semiconductor (TI)]
Página de inicio  http://www.national.com
Logo NSC - National Semiconductor (TI)

LP3972 Datasheet(HTML) 41 Page - National Semiconductor (TI)

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2C Compatible Interface (Continued)
LOGIC OUTPUT ENABLE REGISTER (LOER) 8H’84
Bit
7
6*
5*
4*
3*2*1*0*
Designation
Reserved
B3ENC
B2ENC
B1ENC
L5EC
L4EC
L3EC
L2EC
Reset Value
0
1
1
0
0111
Note: ** denotes one time factory programmable EPROM registers for default values
LOGIC OUTPUT ENABLE REGISTER (LOER) DEFINITIONS 8H’84
Bit
Access
Name
Description
7
—
—
Reserved
6
R/W
B3ENC
Connects Buck 3 enable to SYS_EN or PWR_EN Logic Control pin
0 - Buck 3 enable connected to PWR_EN
1 - Buck 3 enable connected to SYS_EN, Default
5
R/W
B2ENC
Connects Buck 2 enable to SYS_EN or PWR_EN Logic Control pin
0 - Buck 2 enable connected to PWR_EN
1 - Buck 2 enable connected to SYS_EN, Default
4
R/W
B1ENC
Connects Buck 1 enable to SYS_EN or PWR_EN Logic Control pin
0 - Buck 1 enable connected to PWR_EN, Default
1 - Buck 1 enable connected to SYS_EN
3
R/W
L5EC
Connects LDO5 enable to SYS_EN or PWR_EN Logic Control pin
0 - LDO 5 enable connected to PWR_EN, Default
1 - LDO 5 enable connected to SYS_EN
2
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, Default
1
R/W
L3EC
Connects LDO3 enable to SYS_EN or PWR_EN Logic Control pin
0 - LDO 3 enable connected to PWR_EN
1 - LDO 3 enable connected to SYS_EN, Default
0
R/W
L2EC
Connects LDO2 enable to SYS_EN or PWR_EN Logic Control pin
0 - LDO 2 enable connected to PWR_EN
1 - LDO 2 enable connected to SYS_EN, Default
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