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LP3971 bảng dữ liệu(PDF) 23 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor. Click here to check the latest version.
tên linh kiện LP3971
Giải thích chi tiết về linh kiện  POWER MANAGEMENT UNIT FOR ADVANCED APPLICATION PROCESSORS
PDF  42 Pages
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nhà sản xuất  NSC [National Semiconductor (TI)]
Trang chủ  http://www.national.com
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LP3971 bảng dữ liệu(HTML) 23 Page - National Semiconductor (TI)

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I
2C Register Definitions (Continued)
LDO OUTPUT VOLTAGE ENABLE REGISTER (LDOEN) 8h’12
Bit
7
6
54321
0
Designation
L5EC
L4EC
LDO5_EN
LDO4_EN
LDO3_EN
LDO2_EN
LDO1_EN
Reserved
Reset Value
0
0
11111
0
LDO OUTPUT VOLTAGE ENABLE REGISTER (LDOEN) 8h’12 DEFINITIONS
Bit
Access
Name
Description
7
R/W
L5EC
Connects LDO5 enable to SYS_EN or PWR_EN Logic Control pin
0 = LDO 5 enable connected to PWR_EN
1 = LDO 5 enable connected to SYS_EN
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
4321
0
Designation
LDOS_OK
N/A
LDO5_0K
LDO4_OK
LDO3_OK
LDO2_OK
LDO1_OK
N/A
Reset Value
0
0
0
0000
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
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