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LTC2972 数据表(PDF) 68 Page - Linear Technology

部件名 LTC2972
功能描述  2-Channel PMBus Power System Manager Featuring Programmable Power Good Outputs
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制造商  LINER [Linear Technology]
网页  http://www.linear.com
标志 LINER - Linear Technology

LTC2972 数据表(HTML) 68 Page - Linear Technology

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LTC2972
68
2972fa
For more information www.linear.com/LTC2972
MFR_FAULTB0_RESPONSE and MFR_FAULTB1_RESPONSE Data Contents
BIT(S) SYMBOL
OPERATION
b[7:2] Reserved
Read only, always returns 000000b.
b[1]
Mfr_faultb0_response_chan1,
Mfr_faultb1_response_chan1
Channel 1 response.
0: The channel continues operation without interruption
1: The channel shuts down if the corresponding FAULTB pin is still asserted after 10µs. When the FAULTB pin
subsequently de-asserts, the channel turns back on, honoring TON_DELAY and TON_RISE settings.
b[0]
Mfr_faultb0_response_chan0,
Mfr_faultb1_response_chan0
Channel 0 response.
0: The channel continues operation without interruption
1: The channel shuts down if the corresponding FAULTB pin is still asserted after 10µs. When the FAULTB pin
subsequently de-asserts, the channel turns back on, honoring TON_DELAY and TON_RISE settings.
FAULT WARNING AND STATUS
COMMAND NAME
CMD
CODE DESCRIPTION
TYPE
PAGED FORMAT UNITS EEPROM
DEFAULT
VALUE
REF
PAGE
CLEAR_FAULTS
0x03 Clear any fault bits that have been set.
Send Byte
Y
NA
68
STATUS_BYTE
0x78 One byte summary of the unit’s fault condition.
R Byte
Y
Reg
NA
69
STATUS_WORD
0x79 Two byte summary of the unit’s fault condition.
R Word
Y
Reg
NA
69
STATUS_VOUT
0x7A Output voltage fault and warning status.
R Byte
Y
Reg
NA
70
STATUS_IOUT
0x7B Output current fault and warning status.
R Byte
Y
Reg
NA
70
STATUS_INPUT
0x7C Input supply fault and warning status.
R Byte
N
Reg
NA
<OV>
STATUS_TEMPERATURE
0x7D External temperature fault and warning status
for READ_TEMPERATURE_1.
R Byte
Y
Reg
NA
71
STATUS_CML
0x7E Communication and memory fault and warning
status.
R Byte
N
Reg
NA
71
STATUS_MFR_SPECIFIC
0x80 Manufacturer specific fault and state
information.
R Byte
Y
Reg
NA
72
MFR_PADS
0xE5 Current state of selected digital I/O pads.
R/W Word
N
Reg
NA
72
MFR_COMMON
0xEF Manufacturer status bits that are common
across multiple ADI chips.
R Byte
N
Reg
NA
73
MFR_FIRST_FAULT
0xB6 First fault information
R Word
N
Reg
74
MFR_STATUS_2
0xB7 Manufacturer Specific Status
R Word
Y
Reg
NA
73
CLEAR_FAULTS
The CLEAR_FAULTS command is used to clear status bits that have been set. This command clears all fault and warn-
ing bits in all unpaged status registers, and paged status registers selected by the current PAGE setting. At the same
time, the device negates (clears, releases) its contribution to ALERTB.
The CLEAR_FAULTS command does not cause a unit that has latched off for a fault condition to restart. See Clearing
Latched Faults for more information.
If the fault is present after the fault is cleared, the fault status bit will be set again and the host notified by the usual means.
Note: this command responds to the global page command. (PAGE=0xFF)
PMBus COMMAND DESCRIPTION


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