Datasheet

LTC3880/LTC3880-1
35
3880fc
For more information www.linear.com/LTC3880
PMBus COMMAND SUMMARY
COMMAND NAME
CMD
CODE DESCRIPTION TYPE PAGED
DATA
FORMAT UNITS NVM
DEFAULT
VALUE PAGE
USER_DATA_01 0xB1 Manufacturer reserved for LTpowerPlay. R/W Word Y Reg Y NA
89
USER_DATA_02 0xB2 OEM RESERVED. Typically used for part
serialization
R/W Word N Reg Y NA
89
USER_DATA_03 0xB3 A NVM word available for the user. R/W Word Y Reg Y 0x0000
89
USER_DATA_04 0xB4 A NVM word available for the user. R/W Word N Reg Y 0x0000
89
MFR_EE_UNLOCK 0xBD Unlock user EEPROM for access by MFR_EE_
ERASE and MFR_EE_DATA commands.
R/W Byte N Reg NA
108
MFR_EE_ERASE 0xBE Initialize user EEPROM for bulk programming by
MFR_EE_DATA.
R/W Byte N Reg NA
108
MFR_EE_DATA 0xBF Data transferred to and from EEPROM using
sequential PMBus word reads or writes.
Supports bulk programming.
R/W Word N Reg NA
108
MFR_CHAN_CONFIG_
LTC3880
0xD0 Configuration bits that are channel specific. R/W Byte Y Reg Y 0x1F
65
MFR_CONFIG_ALL_
LTC3880
0xD1 Configuration bits that are common to all pages. R/W Byte N Reg Y 0x09
65
MFR_GPIO_PROPAGATE_
LTC3880
0xD2 Configuration that determines which faults are
propagated to the GPIO pins.
R/W Word Y Reg Y 0x2993
87
MFR_PWM_MODE_
LTC3880
0xD4 Configuration for the PWM engine of each
channel.
R/W Byte Y Reg Y 0xC2
68
MFR_GPIO_RESPONSE 0xD5 Action to be taken by the device when the GPIO
pin is externally asserted low.
R/W Byte Y Reg Y 0xC0
89
MFR_OT_FAULT_
RESPONSE
0xD6 Action to be taken by the device when an internal
overtemperature fault is detected.
R Byte N Reg 0xC0
85
MFR_IOUT_PEAK 0xD7 Report the maximum measured value of
READ_IOUT since last MFR_CLEAR_PEAKS.
R Word
Y L11 A NA
100
MFR_CHANNEL_
ADDRESS
0xD8 Address to the PAGE activated channel. R/W Byte Y Reg Y 0x80
64
MFR_RETRY_DELAY 0xDB Retry interval during FAULT retry mode. R/W Word Y L11 ms Y 350
0xFABC
80
MFR_RESTART_DELAY 0xDC Minimum time the RUN pin is held low by the
LTC3880.
R/W Word Y L11 ms Y 500
0xFBE8
80
MFR_VOUT_PEAK 0xDD Maximum measured value of READ_VOUT since
last MFR_CLEAR_PEAKS.
R Word Y L16 V NA
100
MFR_VIN_PEAK 0xDE Maximum measured value of READ_VIN since
last MFR_CLEAR_PEAKS.
R Word N L11 V NA
100
MFR_TEMPERATURE_1_
PEAK
0xDF Maximum measured value of external
Temperature (READ_TEMPERATURE_1)
since last MFR_CLEAR_PEAKS.
R Word
Y L11 C NA
100
MFR_CLEAR_PEAKS 0xE3 Clears all peak values. Send Byte N NA
91
MFR_PADS 0xE5 Digital status of the I/O pads. R Word N Reg NA
97
MFR_ADDRESS 0xE6 Sets the 7-bit I
2
C address byte. R/W Byte N Reg Y 0x4F 64
MFR_SPECIAL_ID 0xE7 Manufacturer code representing the LTC3880 R Word N Reg 0x40X
90
MFR_IIN_OFFSET 0xE9 Coefficient used to add to the input current to
account for the IQ of the part.
R/W Word Y L11 A Y 0.050
0X9333
74
MFR_FAULT_LOG_STORE 0xEA Command a transfer of the fault log from RAM to
EEPROM. This causes the part to behave as if a
channel has faulted off.
Send Byte N NA
102