ltc2978 Linear Technology Corporation, ltc2978 Datasheet - Page 21

• Manufacturer Part Number: ltc2978
• Description: Octal Pmbus Power Supply Monitor And Controller With Eeprom
• Manufacturer: Linear Technology Corporation

operaTion
Summary
COMMAND FUNCTION
MFR_VINEN_UV_FAULT_RESPONSE
MFR_RETRY_DELAY
MFR_RESTART_DELAY
MFR_VOUT_PEAK
MFR_VIN_PEAK
MFR_TEMPERATURE_PEAK
MFR_DAC
MFR_POWERGOOD_ASSERTION_DELAY Determines power good output assertion
MFR_WATCHDOG_T_FIRST
MFR_WATCHDOG_T
MFR_PAGE_FF_MASK
MFR_PADS
MFR_I2C_BASE_ADDRESS
MFR_SPECIAL_ID
MFR_SPECIAL_LOT
MFR_VOUT_DISCHARGE_THRESHOLD
MFR_FAULT_LOG_STORE
MFR_FAULT_LOG_RESTORE
MFR_FAULT_LOG_CLEAR
MFR_FAULT_LOG_STATUS
MFR_FAULT_LOG
DESCRIPTION
Determines the response of the VIN_EN
pin to a VOUT_UV_FAULT
Sets retry interval during retry mode.
Sets delay from actual CONTROL active
edge to virtual CONTROL active edge.
Returns the maximum measured value of
V
Returns the maximum measured value of
V
Returns the maximum measured value of
temperature.
Manufacturer register that contains the
code of the 10-bit voltage-buffered current
DAC.
delay.
First watchdog timer interval.
Watchdog timer interval.
Selects which channels respond to global
page commands.
Returns values detected and driven onto
digital I/O pads.
This register determines the base value of
the I
This register contains the manufacturer
code for identifying the LTC2978.
These registers contain customer
dependent codes that identify the factory
programmed user configuration stored in
EEPROM.
Coefficient used to multiply VOUT_
COMMAND in order to determine VOUT
OFF threshold voltage.
Command a transfer of the fault log from
RAM to EEPROM. This causes the part to
behave as if a channel has faulted off.
Command a transfer of the fault log
previously stored in EEPROM back to
RAM.
Initialize the EEPROM block reserved for
fault logging and clear any previous fault
logging locks.
This command returns one byte with
status information on fault logging.
Fault log. Accessed using a block read.
Returns data in the form last in first out.
OUT
IN_SNS
2
.
C address byte.
.
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
W
W
W
R
R
R
R
R
R
R
LENGTH
(BITS)
DATA
2048
16
16
16
16
16
16
16
16
16
16
16
16
8
8
8
8
0
0
0
8
BYTE VALUE
COMMAND
‘hDD
‘hDA
‘hDB
‘hDC
‘hDE
‘hDF
‘hEA
‘hEB
‘hEC
‘hED
‘hE0
‘hE1
‘hE2
‘hE3
‘hE4
‘hE5
‘hE6
‘hE7
‘hE8
‘hE9
‘hEE
MEMORY
EEPROM
EEPROM
EEPROM
EEPROM
EEPROM
EEPROM
EEPROM
EEPROM
EEPROM
EEPROM
EEPROM
EEPROM
EEPROM
EEPROM
TYPE
NV
LTC2978
DEFAULT
Contact
Factory
VALUE
‘hF320
‘hFB20
‘h0000
‘hEB20
‘h8000
‘h8000
‘h0121
‘hC200
‘h00
‘h5C
‘hFF
N/A
the
NA
NA
NA
NA
NA
NA
NA
NA

PAGED
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
?
Y
Y
Y
Y
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