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LTC2978 Datasheet(PDF) 18 Page - Linear Technology

Part # LTC2978
Description  Octal PMBus Power Supply Monitor and Controller with EEPROM
PDF  64 Pages
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Manufacturer  LINER [Linear Technology]
Direct Link  http://www.linear.com
Logo LINER - Linear Technology

LTC2978 Datasheet(HTML) 18 Page - Linear Technology

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LTC2978

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REGISTER COMMAND SET
Summary
COMMAND FUNCTION
DESCRIPTION
R/W
DATA
LENGTH
(BITS)
COMMAND
BYTE VALUE
NV
MEMORY
TYPE
DEFAULT
VALUE
PAGED
?
PAGE
R/W
8
‘h00
‘h00
N
OPERATION
Operating mode control.
R/W
8
‘h01
EEPROM
‘h00
Y
ON_OFF_CONFIG
CONTROL pin and PMBus bus on/off
command setting.
R/W
8
‘h02
EEPROM
‘h12
Y
CLEAR_FAULTS
CLEAR_FAULTS is used to clear any fault
bits that have been set.
W
0
‘h03
NA
Y
WRITE_PROTECT
Provides protection against accidental
changes.
R/W
8
‘h10
EEPROM
‘h00
N
STORE_USER_ALL
Store entire operating memory to
EEPROM.
W
0
‘h15
NA
N
RESTORE_USER_ALL
Restore entire operating memory from
EEPROM.
W
0
‘h16
NA
N
CAPABILITY
The CAPABILITY command provides a
way for a host system to determine the
capabilities of the PMBus device.
R
8
‘h19
ROM
‘hE0
N
VOUT_MODE
Output voltage format control.
R
8
‘h20
ROM
‘h13
Y
VOUT_COMMAND
Servo DC/DC converter output voltage
value setting.
R/W
16
‘h21
EEPROM
‘h2000
Y
VOUT_MAX
The VOUT_MAX command sets an upper
limit on the output voltage, in volts, the
unit can command regardless of any other
commands or combinations.
R/W
16
‘h24
EEPROM
‘h8000
Y
VOUT_MARGIN_HIGH
Margin high DC/DC converter output
voltage limit setting.
R/W
16
‘h25
EEPROM
‘h219A
Y
VOUT_MARGIN_LOW
Margin low DC/DC converter output
voltage limit setting.
R/W
16
‘h26
EEPROM
‘h1E66
Y
VIN_ON
The VIN_ON command sets the input
voltage, in volts, at which the unit should
start power conversion.
R/W
16
‘h35
EEPROM
‘hD280
N
VIN_OFF
The VIN_OFF command sets the input
voltage, in volts, at which the unit should
stop power conversion.
R/W
16
‘h36
EEPROM
‘hD240
N
VOUT_OV_FAULT_LIMIT
Overvoltage DC/DC converter fault limit
setting.
R/W
16
‘h40
EEPROM
‘h2333
Y
VOUT_OV_FAULT_RESPONSE
The VOUT_OV_FAULT_RESPONSE
command instructs the device on what
action to take in response to an output
overvoltage fault.
R/W
8
‘h41
EEPROM
‘h80
Y
VOUT_OV_WARN_LIMIT
Overvoltage DC/DC converter warning limit
setting.
R/W
16
‘h42
EEPROM
‘h2266
Y
VOUT_UV_WARN_LIMIT
Undervoltage DC/DC converter warning
limit setting.
R/W
16
‘h43
EEPROM
‘h1D9A
Y
operaTion



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