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LP3971 Datasheet, PDF (27/42 Pages) National Semiconductor (TI) – POWER MANAGEMENT UNIT FOR ADVANCED APPLICATION PROCESSORS | |||
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I 2C Register Definitions (Continued)
BUCK 2 TARGET VOLTAGE 2 REGISTER (B2TV2) 8hâ2A
Bit
7
6
5
4
Designation
Reserved
Reset Value
0
0
0
1
3
2
1
Buck 2 Output Voltage (B2OV)
1
0
0
BUCK 2 TARGET VOLTAGE 2 REGISTER (B2TV2) 8hâ2A DEFINITIONS
Bit Access
7:5
...
4:0
R/W
Name
...
B2OV
Reserved
Output Voltage
Data Code
5hâ01
5hâ02
5hâ03
5hâ04
5hâ05
5hâ06
5hâ07
5hâ08
5hâ09
5hâ0A
5hâ0B
5hâ0C
Description
(V)
Data Code
0.80
5hâ0D
0.85
5hâ0E
0.90
5hâ0F
0.95
5hâ11
1.00
5hâ12
1.05
5hâ13
1.10
5hâ14
1.15
5hâ15
1.20
5hâ16
1.25
5hâ17
1.30
5hâ18
1.35
5hâ19
BUCK 2 VOLTAGE RAMP CONTROL REGISTER (B2RC) 8hâ2B
Bit
7
6
5
4
3
2
1
Designation
Reserved
Ramp Rate
Reset Value
0
0
0
0
1
0
1
BUCK 2 VOLTAGE RAMP CONTROL REGISTER (B2RC) 8hâ2B DEFINITIONS
Bit Access
7:5
...
4:0
R/W
Name
...
B2RS
Reserved
DVM Ramp Speed
Data Code
4hâ0
4hâ1
4hâ2
4hâ3
4hâ4
4hâ5
4hâ6
4hâ7
4hâ8
4hâ9
4hâA
Description
Ramp Rate
(mV/µs)
Instant
1
2
3
4
5
6
7
8
9
10
0
0
(V)
1.40
1.45
1.50
1.60
1.65
1.70
1.80
1.90
2.50
2.80
3.00
3.30
0
0
27
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