ltc2978 Linear Technology Corporation, ltc2978 Datasheet - Page 22

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

Summary
COMMAND FUNCTION
MFR_COMMON
MFR_SPARE_0
MFR_SPARE_2
MFR_VOUT_MIN
MFR_VIN_MIN
MFR_TEMPERATURE_MIN
DETAILED PMBus COMMAND REGISTER
DESCRIPTIONS
PAGE
The PAGE command provides the ability to configure,
control and monitor multiple outputs on one unit. Set-
ting PAGE = ‘hFF allows PMBus commands that support
global page programming to be written simultane-
ously. The only commands that support PAGE = ‘hFF are
OPERATION and ON_OFF_CONFIG. See MFR_PAGE_FF_
MASK for additional options. Reading any PMBus register
with PAGE = ‘hFF returns unpredictable data and will trigger
a CML fault.
LTC2978
operaTion

DESCRIPTION
Contains manufacturer status bits that are
common across multiple LTC chips.
Scratchpad register.
Paged scratchpad register.
Returns the minimum measured value of
VOUT.
Returns the minimum measured value of
V
Returns the minimum measured junction
temperature value.
IN_SNS
.
PAGE Data Contents
BIT(S) SYMBOL PURPOSE
b[7:0]
R/W
R/W
R/W
Page
R
R
R
R
LENGTH
(BITS)
DATA
Page operation.
‘h00: All PMBus commands address channel/page 0.
‘h01: All PMBus commands address channel/page 1.
•
•
•
‘h07: All PMBus commands address channel/page 7.
‘hXX: All nonspecified values reserved.
‘hFF: PMBus commands that support this global PAGE
write mode will be written simultaneously.
16
16
16
16
16
8
BYTE VALUE
COMMAND
‘hEF
‘hF7
‘hF9
‘hFB
‘hFC
‘hFD
MEMORY
EEPROM
EEPROM
TYPE
NV
DEFAULT
VALUE
‘h0000
‘h0000
NA
NA
NA
NA
PAGED
?
N
N
Y
Y
N
N
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