LP3971 Datasheet, PDF (33/57 Pages) National Semiconductor (TI) – POWER MANAGEMENT UNIT FOR ADVANCED APPLICATION PROCESSORS

LP3971
www.ti.com
Bit
Access
4:0
R/W
Name
B2OV
Output Voltage
Data Code
5h'01
5h'02
5h'03
5h'04
5h'05
5h'06
5h'07
5h'08
5h'09
5h'0A
5h'0B
5h'0C
SNVS432U – JANUARY 2006 – REVISED OCTOBER 2008
Description
(V)
Data Code
(V)
0.80
5h'0D
1.40
0.85
5h'0E
1.45
0.90
5h'0F
1.50
0.95
5h'11
1.60
1.00
5h'12
1.65
1.05
5h'13
1.70
1.10
5h'14
1.80
1.15
5h'15
1.90
1.20
5h'16
2.50
1.25
5h'17
2.80
1.30
5h'18
3.00
1.35
5h'19
3.30
BUCK 3 VOLTAGE RAMP CONTROL REGISTER (B3RC) 8H'34
Bit
7
6
5
4
3
2
1
0
Designation
Reserved
Ramp Rate
Reset Value
0
0
0
0
1
0
1
0
BUCK 3 VOLTAGE RAMP CONTROL REGISTER (B3RC) 8H'34 DEFINITIONS
Bit
Access
7:5
—
4:0
R/W
Name
—
B3RC
Reserved
DVM Ramp Speed
Data Code
4h'0
4h'1
4h'2
4h'3
4h'4
4h'5
4h'6
4h'7
4h'8
4h'9
4h'A
Description
Ramp Rate
(mV/µs)
Instant
1
2
3
4
5
6
7
8
9
10
BUCK FUNCTION REGISTER (BFR) 8H'38
Bit
7
Designation
Reset Value
0
6
5
4
Reserved
0
0
0
3
2
1
0
SHBU
BK_SLOMOD BK_SSEN
0
0
1
0
BUCK FUNCTION REGISTER (BFR) 8H'38 DEFINITIONS
Bit
Access
7:3
—
Name
—
Reserved
Description
Copyright © 2006–2008, Texas Instruments Incorporated
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