35
Rev. B
OPERATION
Figure 5. LTM4680 Status Register Summary
(PAGED)
MFR_PADS
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
VDD33 OV Fault
VDD33 UV Fault
(reads 0)
(reads 0)
Invalid ADC Result(s)
SYNC Clocked by External Source
Channel 1 is POWER_GOOD
Channel 0 is POWER_GOOD
LTM4680 Forcing RUN1 Low
LTM4680 Forcing RUN0 Low
RUN1 Pin State
RUN0 Pin State
LTM4680 Forcing
FAULT1
Low
LTM4680 Forcing
FAULT0
Low
FAULT1
Pin State
FAULT0
Pin State
STATUS_MFR_SPECIFIC
7
6
5
4
3
2
1
0
(PAGED)
4680 F05
STATUS_INPUT
7
6
5
4
3
2
1
0
MFR_INFO
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
EEPROM ECC Status
Reserved
Reserved
Reserved
Reserved
STATUS_WORD
STATUS_BYTE
7
6
5
4
3
2
1
0
(PAGED)
MFR_COMMON
7
6
5
4
3
2
1
0
Chip Not Driving
ALERT
Low
Chip Not Busy
Internal Calculations Not Pending
Output Not In Transition
EEPROM Initialized
(reads 0)
SHARE_CLK_LOW
WP Pin High
STATUS_TEMPERATURE
7
6
5
4
3
2
1
0
STATUS_CML
7
6
5
4
3
2
1
0
STATUS_VOUT*
7
6
5
4
3
2
1
0
(PAGED)
STATUS_IOUT
7
6
5
4
3
2
1
0
(PAGED)
VOUT_OV Fault
VOUT_OV Warning
VOUT_UV Warning
VOUT_UV Fault
VOUT_MAX Warning
TON_MAX Fault
TOFF_MAX Warning
(reads 0)
IOUT_OC Fault
(reads 0)
IOUT_OC Warning
(reads 0)
(reads 0)
(reads 0)
(reads 0)
(reads 0)
OT Fault
OT Warning
(reads 0)
UT Fault
(reads 0)
(reads 0)
(reads 0)
(reads 0)
Invalid/Unsupported Command
Invalid/Unsupported Data
Packet Error Check Failed
Memory Fault Detected
Processor Fault Detected
(reads 0)
Other Communication Fault
Other Memory or Logic Fault
15
14
13
12
11
10
9
8
VOUT
IOUT
INPUT
MFR_SPECIFIC
POWER_GOOD#
(reads 0)
(reads 0)
(reads 0)
BUSY
OFF
VOUT_OV
IOUT_OC
(reads 0)
TEMPERATURE
CML
NONE OF THE ABOVE
VIN_OV Fault
(reads 0)
VIN_UV Warning
(reads 0)
Unit Off for Insuffcient VIN
(reads 0)
IIN_OC Warning
(reads 0)
Internal Temperature Fault
Internal Temperature Warning
EEPROM CRC Error
Internal PLL Unlocked
Fault Log Present
VDD33 UV or OV Fault
VOUT Short Cycled
FAULT
Pulled Low By External Device
MASKABLE
DESCRIPTION
General Fault or Warning Event
General Non-Maskable Event
Dynamic
Status Derived from Other Bits
Yes
No
No
No
GENERATES
ALERT
Yes
Yes
No
Not Directly
BIT CLEARABLE
Yes
Yes
No
No
