LTC2978A View Datasheet(PDF) - Linear Technology
Part Name
Description
MFG CO.
LTC2978A
Linear Technology
'LTC2978A' PDF : 82 Pages View PDF
LTC2978A
PMBus Command summary
Summary Table
COMMAND NAME
STATUS_INPUT
STATUS_TEMPERATURE
STATUS_CML
STATUS_MFR_SPECIFIC
READ_VIN
READ_VOUT
READ_TEMPERATURE_1
PMBUS_REVISION
MFR_CONFIG_LTC2978
MFR_CONFIG_ALL_LTC2978
MFR_FAULTBz0_PROPAGATE
MFR_FAULTBz1_PROPAGATE
MFR_PWRGD_EN
MFR_FAULTB00_RESPONSE
MFR_FAULTB01_RESPONSE
MFR_FAULTB10_RESPONSE
MFR_FAULTB11_RESPONSE
MFR_VINEN_OV_FAULT_
RESPONSE
MFR_VINEN_UV_FAULT_
RESPONSE
MFR_RETRY_DELAY
MFR_RESTART_DELAY
MFR_VOUT_PEAK
MFR_VIN_PEAK
MFR_TEMPERATURE_PEAK
CMD
CODE DESCRIPTION
DEFAULT
VALUE
DATA
FLOAT REF
TYPE PAGED FORMAT UNITS EEPROM HEX PAGE
0x7C Input voltage fault and warning status
measured at VIN_SNS pin.
R Byte
N
Reg
NA 40
0x7D Temperature fault and warning status for R Byte
N
Reg
READ_TEMPERATURE_1.
NA 40
0x7E Communication and memory fault and
warning status.
R Byte
N
Reg
NA 41
0x80 Manufacturer specific fault and state
information.
R Byte
Y
Reg
NA 41
0x88 Input voltage measured at VIN_SNS pin. R Word N
L11
V
NA 42
0x8B DC/DC converter output voltage.
R Word Y
L16
V
NA 42
0x8D Internal junction temperature.
R Word N
L11 °C
NA 42
0x98 PMBus revision supported by this device. R Byte
N
Reg
Current revision is 1.1.
0x11 42
0xD0 Configuration bits that are channel
specific.
R/W Word Y
Reg
Y 0x0080 43
0xD1 Configuration bits that are common to all R/W Byte N
Reg
pages.
Y
0x7B 44
0xD2 Configuration that determines if a
R/W Byte Y
Reg
channel’s faulted off state is propagated
to the FAULTB00 and FAULTB10 pins.
Y
0x00 45
0xD3 Manufacturer configuration that
R/W Byte Y
Reg
Configuration that determines if a
channel’s faulted off state is propagated
to the FAULTB01 and FAULTB11 pins.
Y
0x00 45
0xD4 Configuration for mapping PWRGD and R/W Word N
Reg
WDI/RESETB status to the PWRGD pin.
Y 0x0000 46
0xD5 Action to be taken by the device when the R/W Byte N
Reg
FAULTB00 pin is asserted low.
Y
0x00 47
0xD6 Action to be taken by the device when the R/W Byte N
Reg
FAULTB01 pin is asserted low.
Y
0x00 47
0xD7 Action to be taken by the device when the R/W Byte N
Reg
FAULTB10 pin is asserted low.
Y
0x00 47
0xD8 Action to be taken by the device when the R/W Byte N
Reg
FAULTB11 pin is asserted low.
Y
0x00 47
0xD9 Action to be taken by the VIN_EN pin in
R/W Byte N
Reg
response to a VOUT_OV_FAULT.
Y
0x00 48
0xDA Action to be taken by the VIN_EN pin in
R/W Byte N
Reg
response to a VOUT_UV_FAULT.
Y
0x00 49
0xDB Retry interval during FAULT retry mode. R/W Word N
L11 ms
Y
200.0 49
0xF320
0xDC Delay from actual CONTROL active edge R/W Word N
to virtual CONTROL active edge.
L11 ms
Y
400.0 50
0xFB20
0xDD Maximum measured value of READ_
VOUT.
R Word Y
L16
V
NA 50
0xDE Maximum measured value of READ_VIN. R Word N
L11
V
NA 50
0xDF Maximum measured value of READ_
TEMPERATURE_1.
R Word N
L11 °C
NA 50
2978af
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