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LP3972 bảng dữ liệu(PDF) 39 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor. Click here to check the latest version.
tên linh kiện LP3972
Giải thích chi tiết về linh kiện  Power Management Unit for Advanced Application Processors
PDF  59 Pages
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nhà sản xuất  NSC [National Semiconductor (TI)]
Trang chủ  http://www.national.com
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LP3972 bảng dữ liệu(HTML) 39 Page - National Semiconductor (TI)

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I
2C Compatible Interface (Continued)
OUTPUT ENABLE 3 REGISTER (OEN3) 8H’82
Bit
7
6
5
4**
3
2**
1
0**
Designation
Reserved
B3EN
ENFLAG
B2EN
Reserved
L1EN
Reset Value
0
0
0
1
0
1
0
1
Note: ** denotes one time factory programmable EPROM registers for default values
OUTPUT ENABLE 3 REGISTER (OEN3) 8H’82 DEFINITIONS
Bit
Access
Name
Description
7:5
—
—
Reserved
4
R/W
B3EN
V
CC_Buck3 Supply Output Enabled
0=V
CC_Buck3 Supply Output Disabled
1=V
CC_Buck3 Supply Output Enabled, Default
3
R/W
ENFLAG
Enable for Temperature Flags (BCT)
0 = Temperature Flag Disabled
1 = Temperature Flag Enabled
2
R/W
B2EN
V
CC_Buck2 Supply Output Enabled
0=V
CC_Buck2 Supply Output Disabled
1=V
CC_Buck2 Supply Output Enabled, Default
1
—
—
Reserved
0
R/W
L1EN
LDO_1 (MVT)Output Voltage Enable
0 = LDO1 Supply Output Disabled
1 = LDO1 Supply Output Enabled, Default
STATUS REGISTER 3 (OSR3) 8H’83
Bit
7
6
5
4
3
2
1
0
Designation
BT_OK
B3_OK
B2_OK
LDO1_OK
Reserved
BCT2
BCT1
BCT0
Reset Value
0
0
0
0
0
0
0
0
STATUS REGISTER 3 (OSR3) DEFINITIONS 8H’83
Bit
Access
Name
Description
7
R
BT_OK
Buck 2-3 Supply Output Voltage Status
0 - (Buck 1-3) output voltage < 90% Default value
1 - (Buck 1-3) output voltage > 90% Default value
6
R
B3_OK
Buck 3 Supply Output Voltage Status
0 - (Buck 3) output voltage < 90% Default value
1 - (Buck 3) output voltage > 90% Default value
5
R
B2_OK
Buck 2 Supply Output Voltage Status
0 - (Buck 2) output voltage < 90% Default value
1 - (Buck 2) output voltage > 90% Default value
4
R
LDO1_OK
LDO_1 Output Voltage Status
0-(V
CC_LDO1) output voltage < 90% of selected value
1-(V
CC_LDO1) output voltage > 90% of selected value
3
—
—
Reserved
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