參數(shù)資料
型號: LP3972
廠商: National Semiconductor Corporation
英文描述: Power Management Unit for Advanced Application Processors
中文描述: 電源管理單元的高級應(yīng)用處理器
文件頁數(shù): 26/59頁
文件大小: 1072K
代理商: LP3972
I
2
C Compatible Interface
(Continued)
OUTPUT VOLTAGE ENABLE REGISTER 2
This 8 bit output register enables and disables the output voltages on the LDO 2,3,4 supplies.
Output Voltage Enable Register 2 (OVER2) 8h’12
Bit
7
6
5
4**
3**
2**
1
0
Designation
Reset Value
Note:
** denotes one time factory programmable EPROM registers for default values
Reserved
0
LDO4_EN
0
LDO3_EN
0
LDO2_EN
0
Reserved
0
0
0
0
Output Voltage Enable Register 2 (OVER2) 8h’12 Definitions
Bit
7
6
5
4
Access
R/W
Name
LDO4_EN
Description
Reserved
Reserved
Reserved
LDO_4 Output Voltage Enable
0 = LDO4 Supply Output Disabled, Default
1 = LDO4 Supply Output Enabled
LDO_3 Output Voltage Enable
0 = LDO3 Supply Output Disabled, Default
1 = LDO3 Supply Output Enabled
LDO_2 Output Voltage Enable
0 = LDO2 Supply Output Disabled, Default
1 = LDO2 Supply Output Enabled
Reserved
Reserved
3
R/W
LDO3_EN
2
R/W
LDO2_EN
1
0
OUTPUT VOLTAGE ENABLE REGISTER 2
Output Voltage Status Register 2 (OVSR2) 8h’13
Bit
7
6
5
4
3
2
1
0
Designation
Reset Value
LDO_OK
0
N/A
0
N/A
0
LDO4_OK
0
LDO3_OK
0
LDO2_OK
0
N/A
0
N/A
0
Output Voltage Status Register 2 (OVSR2) 8h’13 Definitions
Bit
7
Access
R
Name
LDO_OK
Description
LDO 2-4 Supply Output Voltage Status
0 - (LDO 2-4) output voltage
<
90% of selected value
1 - (LDO 2-4) output voltage
>
90% of selected value
Reserved
Reserved
LDO_4 Output Voltage Status
0 - (V
CC
_LDO4) output voltage
<
90% of selected value
1 - (V
CC
_LDO4) output voltage
>
90% of selected value
LDO_3 Output Voltage Status
0 - (V
CC
_LDO3) output voltage
<
90% of selected value
1 - (V
CC
_LDO3) output voltage
>
90% of selected value
LDO_2 Output Voltage Status
0 - (V
CC
_LDO2) output voltage
<
90% of selected value
1 - (V
CC
_LDO2) output voltage
>
90% of selected value
Reserved
Reserved
6
5
4
R
LDO4_OK
3
R
LDO3_OK
2
R
LDO2_OK
1
0
L
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