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LTM4700
OPERATION
STATUS_VOUT*
7
VOUT_OV Fault
6
VOUT_OV Warning
5
VOUT_UV Warning
4
VOUT_UV Fault
3
VOUT_MAX Warning
2
TON_MAX Fault
1
TOFF_MAX Warning
0
(reads 0)
(PAGED)
STATUS_IOUT
7
IOUT_OC Fault
6
(reads 0)
5
IOUT_OC Warning
4
(reads 0)
3
(reads 0)
2
(reads 0)
1
(reads 0)
0
(reads 0)
(PAGED)
STATUS_TEMPERATURE
7
OT Fault
6
OT Warning
5
(reads 0)
4
UT Fault
3
(reads 0)
2
(reads 0)
1
(reads 0)
0
(reads 0)
(PAGED)
STATUS_CML
7
Invalid/Unsupported Command
6
Invalid/Unsupported Data
5
Packet Error Check Failed
4
Memory Fault Detected
3
Processor Fault Detected
2
(reads 0)
1
Other Communication Fault
0
Other Memory or Logic Fault
34
STATUS_WORD
15
VOUT
14
IOUT
13
INPUT
12
MFR_SPECIFIC
11
POWER_GOOD#
10
(reads 0)
9
(reads 0)
8
(reads 0)
STATUS_BYTE
7
BUSY
6
OFF
5
VOUT_OV
4
IOUT_OC
3
(reads 0)
2
TEMPERATURE
1
CML
0
NONE OF THE ABOVE
MFR_COMMON
7
Chip Not Driving ALERT Low
6
Chip Not Busy
5
Internal Calculations Not Pending
4
Output Not In Transition
3
EEPROM Initialized
2
(reads 0)
1
SHARE_CLK_LOW
0
WP Pin High
MFR_INFO
15
Reserved
14
Reserved
13
Reserved
12
Reserved
11
Reserved
10
Reserved
9
Reserved
8
Reserved
7
Reserved
6
Reserved
5
Reserved
4
EEPROM ECC Status
3
Reserved
2
Reserved
1
Reserved
0
Reserved
DESCRIPTION
MASKABLE
General Fault or Warning Event
Yes
General Non-Maskable Event
No
Dynamic
No
Status Derived from Other Bits
No
Figure 5. LTM4700 Status Register Summary
For more information
(PAGED)
GENERATES ALERT
BIT CLEARABLE
Yes
Yes
Yes
Yes
No
No
Not Directly
No
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STATUS_INPUT
7
VIN_OV Fault
6
(reads 0)
5
VIN_UV Warning
4
(reads 0)
3
Unit Off for Insuffcient VIN
2
(reads 0)
1
IIN_OC Warning
0
(reads 0)
STATUS_MFR_SPECIFIC
7
Internal Temperature Fault
6
Internal Temperature Warning
5
EEPROM CRC Error
4
Internal PLL Unlocked
3
Fault Log Present
2
VDD33 UV or OV Fault
1
VOUT Short Cycled
0
FAULT Pulled Low By External Device
(PAGED)
MFR_PADS
15
VDD33 OV Fault
14
VDD33 UV Fault
13
(reads 0)
12
(reads 0)
11
Invalid ADC Result(s)
10
SYNC Clocked by External Source
9
Channel 1 is POWER_GOOD
8
Channel 0 is POWER_GOOD
7
LTM4700 Forcing RUN1 Low
6
LTM4700 Forcing RUN0 Low
5
RUN1 Pin State
4
RUN0 Pin State
3
LTM4700 Forcing FAULT1 Low
2
LTM4700 Forcing FAULT0 Low
1
FAULT1 Pin State
0
FAULT0 Pin State
4700 F05
Rev. B
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