Datasheet

LTC2974
26
2974fc
For more information www.linear.com/LTC2974
Summary Table
COMMAND NAME
CMD
CODE DESCRIPTION TYPE PAGED
DATA
FORMAT UNITS EEPROM
DEFAULT
VALUE:
FLOAT
HEX
REF
PAGE
MFR_CONFIG3_LTC2974 0xDA Configuration bits that are channel
specific
R/W Byte N Reg Y 0x00
30
MFR_RETRY_DELAY 0xDB Retry interval during FAULT retry mode. R/W Word N L11 ms Y 200
0xF320
54
MFR_RESTART_DELAY 0xDC Delay from actual CONTROL active edge
to virtual CONTROL active edge.
R/W Word N L11 ms Y 400
0xFB20
51
MFR_VOUT_PEAK 0xDD Maximum measured value of READ_VOUT. R Word Y L16 V NA
66
MFR_VIN_PEAK 0xDE Maximum measured value of READ_VIN. R Word N L11 V NA
66
MFR_TEMPERATURE_1_PEAK 0xDF Maximum measured value of READ_
TEMPERATURE_1.
R Word Y L11 °C NA
66
MFR_DAC 0xE0 Manufacturer register that contains the
code of the 10-bit DAC.
R/W Word Y Reg N 0x0000
44
MFR_POWERGOOD_
ASSERTION_DELAY
0xE1 Power-good output assertion delay. R/W Word N L11 ms Y 100
0xEB20
52
MFR_WATCHDOG_T_FIRST 0xE2 First watchdog timer interval. R/W Word N L11 ms Y 0
0x8000
52
MFR_WATCHDOG_T 0xE3 Watchdog timer interval. R/W Word N L11 ms Y 0
0x8000
52
MFR_PAGE_FF_MASK 0xE4 Configuration defining which channels
respond to global page commands
(PAGE=0xFF).
R/W Byte N Reg Y 0xF
28
MFR_PADS 0xE5 Current state of selected digital I/O pads. R/W Word N Reg NA
61
MFR_I2C_BASE_ADDRESS 0xE6 Base value of the I
2
C/SMBus address
byte.
R/W Byte N Reg Y 0x5C 28
MFR_SPECIAL_ID 0xE7 Manufacturer code for identifying the
LTC2974.
R Word N Reg Y 0x0213
78
MFR_SPECIAL_LOT 0xE8 Customer dependent codes that
identify the factory programmed user
configuration stored in EEPROM. Contact
factory for default value.
R Byte Y Reg Y
78
MFR_VOUT_DISCHARGE_
THRESHOLD
0xE9 Coefficient used to multiply VOUT_
COMMAND in order to determine V
OUT
off
threshold voltage.
R/W Word Y L11 Y 2.0
0xC200
44
MFR_FAULT_LOG_STORE 0xEA Command a transfer of the fault log from
RAM to EEPROM.
Send Byte N NA
70
MFR_FAULT_LOG_RESTORE 0xEB Command a transfer of the fault log
previously stored in EEPROM back to
RAM.
Send Byte N NA
70
MFR_FAULT_LOG_CLEAR 0xEC Initialize the EEPROM block reserved for
fault logging and clear any previous fault
logging locks.
Send Byte N NA
70
MFR_FAULT_LOG_STATUS 0xED Fault logging status. R Byte N Reg Y NA
70
MFR_FAULT_LOG 0xEE Fault log data bytes. This sequentially
retrieved data is used to assemble a
complete fault log.
R Block N Reg Y NA
70
pMbus coMManD suMMary