On, Off And Margin Control; On_Off_Config; Mfr_Config_All_Ltc3882-1 - Linear Technology Analog Devices LTC3882-1 Datasheet

LTC3882-1
PMBus COMMAND DETAILS

MFR_CONFIG_ALL_LTC3882-1

The MFR_CONFIG_ALL_LTC3882-1 command provides device-level configuration common to multiple LTC PMBus
products.
Bit Definitions:
BIT MEANING
7 Enable fault logging.
6 Ignore resistor configuration pins. Does not apply to ASEL0 or ASEL1.
5 Disable CML fault for Quick Command message.
4 Disable SYNC output.
3 Enable 255ms PMBus timeout.
2 Require valid PEC for PMBus write.
1 Enable PMBus clock stretching.
0 Execute CLEAR_FAULTS on rising edge of either RUN pin.
If a legal command is received with an invalid PEC, the LTC3882-1 will not execute the command, regardless of the state
of bit 2. If clock stretching is enabled, the LTC3882-1 only uses it as required, generally above SCL rates of 100kHz.
This command has one data byte.

ON, OFF AND MARGIN CONTROL

COMMAND NAME

ON_OFF_CONFIG

OPERATION
MFR_RESET
ON_OFF_CONFIG
The ON_OFF_CONFIG command specifies the combination of RUNn pin input state and PMBus commands needed to
turn the PWM channel on and off.
Supported Values:
VALUE MEANING
0x1F OPERATION value and RUNn pin must both command the device to start/run. Device executes immediate off when commanded off with
the RUN pin.
0x1E OPERATION value and RUNn pin must both command the device to start/run. Device uses TOFF_ command values when commanded off.
0x17 RUNn pin control with immediate off when commanded off. OPERATION on/off control ignored.
0x16 RUNn pin control using TOFF_ command values when commanded off. OPERATION on/off control ignored.
Programming an unsupported ON_OFF_CONFIG value will generate a CML fault and the command will be ignored.
This command has one data byte.
72
(General Device Configuration)
CMD
CODE DESCRIPTION
0x02 RUN pin and PMBus on/off command
configuration.
0x01 On, off and margin control.
0xFD Force full reset without removing power.
For more information
TYPE PAGED
R/W Byte Y
R/W Byte Y
Send Byte N
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DATA DEFAULT
FORMAT UNITS NVM VALUE
Reg 0x1E
l
Reg 0x80
l
Rev A