lm25066apsqx National Semiconductor Corporation, lm25066apsqx Datasheet - Page 32

• Manufacturer Part Number: lm25066apsqx
• Description: Lm25066a System Power Management And Protection Ic With Pmbus
• Manufacturer: National Semiconductor Corporation

www.national.com
STATUS_WORD
The STATUS WORD is a standard PMBus ™ command that
returns the value of a number of flags indicating the state of
the LM25066A. Accesses to this command should use the
STATUS_VOUT
The STATUS VOUT is a standard PMBus ™ command that
returns the value of the VOUT UV Warning flag. Accesses to
STATUS_INPUT
The STATUS INPUT is a standard PMBus ™ command that
returns the value of the of a number of flags related to input
voltage, current, and power. Accesses to this command
Bit
Bit
Bit
15
14
13
12
11
10
7
6
5
4
3
2
1
0
7
6
5
4
3
2
1
0
9
8
7
6
5
4
3
2
1
0
VOUT Tracking Error
Insufficient Voltage
None of the Above
TEMPERATURE
TOFF Max Fault
VOUT OV Warn
VOUT UV Warn
VOUT OV Fault
VOUT UV Fault
TON Max Fault
PWR GOOD#
VIN OV Warn
PIN OP Warn
VIN OV Fault
VIN UV Warn
VIN UV Fault
IIN OC Warn
IIN OC Fault
IOUT/POUT
UNKNOWN
VOUT Max
VOUT OV
IOUT OC
OTHER
VIN UV
NAME
INPUT
NAME
NAME
VOUT
FANS
Busy
MFR
CML
OFF
TABLE 10. STATUS WORD Definitions
TABLE 12. STATUS INPUT Definitions
TABLE 11. STATUS VOUT Definitions
This bit is asserted if the MOSFET is not switched on for
A Manufacturer Specific Fault or Warning has occurred
A fault or warning not listed in bits [7:1] has occurred
An output voltage fault or warning has occurred
A Temperature Fault or Warning has occurred
An input voltage or current fault has occurred
A VOUT Undervoltage Warning has occurred
The Power Good signal has been negated
A VIN Undervoltage Warning has occurred
An IIN Overcurrent Warning has occurred
A VIN Overvoltage Warning has occurred
32
A PIN Overpower Warning has occurred
A VIN Undervoltage Fault has occurred
A VIN Undervoltage Fault has occurred
An IIN Overcurrent Fault has occurred
A VIN Overvoltage Fault has occurred
A Communication Fault has occurred
PMBus™ read word protocol. To clear bits in this register, the
underlying fault should be cleared and a CLEAR FAULTS
command issued.
this command should use the PMBus ™ read byte protocol.
To clear bits in this register, the underlying fault should be
cleared and a CLEAR FAULTS command issued.
should use the PMBus ™ read byte protocol. To clear bits in
this register, the underlying fault should be cleared and a
CLEAR FAULTS command issued.
Not Supported, always 0
Not Supported, always 0
Not Supported, always 0
Not Supported, always 0
Not Supported, always 0
Not Supported, always 0
Not Supported, always 0
Not Supported, always 0
Not Supported, always 0
Not Supported, always 0
Not Supported, always 0
Not Supported, always 0
Not Supported, always 0
Not Supported, always 0
Not Supported, always 0
any reason.
Meaning
Meaning
Meaning
Default
Default
Default
0
0
1
1
1
0
0
0
0
1
0
0
1
0
0
1
0
0
0
0
0
0
0
0
0
0
1
0
0
0
0
0