Datasheet

LTC3883/LTC3883-1
91
3883fa
For more information www.linear.com/LTC3883
PMBus_REVISION
The PMBUS_REVISION command indicates the revision of the PMBus to which the device is compliant. The LTC3883
is PMBus Version 1.1 compliant in both Part I and Part II.
This read-only command has one data byte.
CAPABILITY
This command provides a way for a host system to determine some key capabilities of a PMBus device.
The LTC3883 supports packet error checking, 400kHz bus speeds, and ALERT pin.
This read-only command has one data byte.
MFR_ID
The MFR_ID command indicates the manufacturer ID of the LTC3883 using ASCII characters.
This read-only command is in block format.
MFR_MODEL
The MFR_MODEL command indicates the manufacturer’s part number of the LTC3883 using ASCII characters.
This read-only command is in block format.
MFR_SPECIAL_ID
The 16-bit word representing the part name and revision. 0x43 denotes the part is an LTC3883, X is adjustable by the
manufacturer.
This read-only command has two data bytes.
FAULT WARNING AND STATUS
COMMAND NAME CMD CODE DESCRIPTION TYPE FORMAT UNITS NVM
DEFAULT
VALUE
CLEAR_FAULTS 0x03 Clear any fault bits that have been set. Send Byte NA
MFR_CLEAR_PEAKS 0xE3 Clears all peak values. Send Byte NA
STATUS_BYTE 0x78 One byte summary of the unit’s fault
condition.
R/W Byte Reg NA
STATUS_WORD 0x79 Tw o byte summary of the unit’s fault condition. R/W Word Reg NA
STATUS_VOUT 0x7A Output voltage fault and warning status. R/W Byte Reg NA
STATUS_IOUT 0x7B Output current fault and warning status. R/W Byte Reg NA
STATUS_INPUT 0x7C Input supply fault and warning status. R/W Byte Reg NA
STATUS_ TEMPERATURE 0x7D External temperature fault and warning status
for READ_TEMERATURE_1.
R/W Byte Reg NA
STATUS_CML 0x7E Communication and memory fault and
warning status.
R/W Byte Reg NA
STATUS_MFR_ SPECIFIC 0x80 Manufacturer specific fault and state
information.
R/W Byte Reg NA
MFR_PADS 0xE5 Digital status of the I/O pads. R Word Reg NA
MFR_COMMON 0xEF Manufacturer status bits that are common
across multiple LT C chips.
R Byte Reg NA
PMBus COMMAND DETAILS