Analog Devices LT7170 Reference Manual page 8

Reference Manual
PMBUS COMMAND SUMMARY
Table 1. Supported PMBus and MFR Commands
2
Command Name
MFR_VOUT_PEAK
MFR_VIN_PEAK
MFR_TEMPERATURE_1_PEAK
MFR_READ_PWM_CFG
MFR_READ_VOUT_CFG
MFR_CLEAR_PEAKS
MFR_DISCHARGE_THRESHOLD
MFR_PADS_LT7170
MFR_ADDRESS
MFR_SPECIAL_ID
MFR_COMMON
MFR_COMPARE_USER_ALL
MFR_CHANNEL_STATE
MFR_PGOOD_DELAY
MFR_NOT_PGOOD_DELAY
MFR_PWM_PHASE_LT7170
MFR_SYNC_CONFIG_LT7170
MFR_PIN_CONFIG_STATUS
MFR_RAIL_ADDRESS
MFR_DISABLE_OUTPUT
MFR_NVM_USER_WP
MFR_RESET
1
Empty cells mean not applicable.
2
Do not assume compatibility of commands between different devices based upon command names. Always refer to the data sheet of the manufacturer for each device
for a complete definition of the function of the command. Analog Devices strives to keep command functionality compatible between all Analog Devices devices. However,
differences can be introduced to address specific product requirements.
3
Commands indicated with Y in the NVM column indicate that these commands are stored and restored using the STORE_USER_ALL and RESTORE_USER_ALL
commands, respectively.
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1
(Continued)
Command
Code Description
0xDD Maximum measured value of READ_VOUT since last
MFR_CLEAR_PEAKS.
0xDE Maximum measured value of READ_VIN since last
MFR_CLEAR_PEAKS.
0xDF Maximum measured value of internal
temperature (READ_TEMPERATURE_1) since last
MFR_CLEAR_PEAKS.
0xE0 Measured PWM_CFG resistor value.
0xE1 Measured VOUT_CFG resistor value.
0xE3 Clears all peak values.
0xE4 Output voltage used to determine output has decayed
sufficiently to reenable the channel.
0xE5 Digital status of the I/O pads.
2
0xE6 Sets the 7-bit I C address byte.
0xE7 ID code used by manufacturer.
0xEF Manufacturer status bits that are common across
multiple Analog Devices chips.
0xF0 Compares current command contents with NVM.
0xF1 Returns the state of the channel.
0xF2 Time output voltage must be between UV and OV
before PGOOD pin transitions high.
0xF3 Time output voltage must be below UV or above OV
before PGOOD pin transitions low.
0xF5 Sets PWM phase.
0xF6 SYNC/PWM_CFG pin input/output configuration.
0xF7 Pin configuration fault status.
0xFA Common address to adjust common parameters.
0xFB Disables regulator outputs until reset.
0xFC Disables commands that write user NVM.
0xFD Commanded reset without requiring a power-down.
LT7170/LT7170-1
Data
3
Type Format Unit NVM
R/W IEEE V No
word
R/W IEEE V No
word
R/W IEEE °C No
word
R word IEEE kΩ No
R word IEEE kΩ No
Send
byte
R/W IEEE Yes
word
R word Register No
R/W Register Yes
word
R word Register No
R byte Register No
Send
byte
R byte Register No
R/W IEEE ms Yes
word
R/W IEEE ms Yes
word
R/W Register Yes
byte
R/W Register Yes
byte
R byte Register No
R/W
Register Yes
byte
R/W No
Register
byte
R/W Register Yes
byte
Send
byte
Rev. A | 8 of 40
Default Value
0.2, 0x3266
0x4F
0x1C1D
1.0, 0x3C00
0.1, 0x2E66
0x00
0x00
0x80
0x00
0x00