LTM4686BEVPBF datasheet(85/130 Pages) AD

85 / 130 page

LTM4686B

Rev. 0

For more information www.analog.com

APPENDIX C: PMBUS COMMAND DETAILS

MFR_CONFIG_ALL

General purpose configuration command common to multiple ADI products

BIT

MEANING

Enable Fault Logging

Ignore Resistor Configuration Pins

Disable CML fault for Quick Command message

Disable SYNC out

Enable 255ms Time Out

A valid PEC required for PMBus writes to be accepted. If this bit is not set,

the part will accept commands with invalid PEC.

Enable the use of PMBus clock stretching

Enables a low to high transition on either RUN pin to issue a

CLEAR_FAULTS command

This command has one data byte.

ON/OFF/MARGIN

COMMAND NAME

CMD

CODE

DESCRIPTION

TYPE

PAGED

DATA

FORMAT UNITS NVM

DEFAULT

VALUE

ON_OFF_CONFIG

0x02

RUN pin and PMBus bus on/off command configuration.

R/W Byte

Reg

0x1F

OPERATION

0x01

Operating mode control. On/off, margin high and margin

low.

R/W Byte

Reg

0x80

MFR_RESET

0xFD

Commanded reset without requiring a power-down.

Identical to RESTORE_USER_ALL.

Send Byte

ON_OFF_CONFIG

The ON_OFF_CONFIG command configures the combination of RUNn pin input and serial bus commands needed to

turn the unit on and off. This includes how the unit responds when power is applied.

Table 22. 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.

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.

Note: A high on the RUNn pin is always required to start power conversion. Power conversion will always stop with a low on RUNn.

Programming an unsupported ON_OFF_CONFIG value will generate a CML fault and the command will be ignored.

This command has one data byte.

LTM4686BEVPBF 数据表(PDF) 85 Page - Analog Devices

LTM4686BEVPBF 数据表(HTML) 85 Page - Analog Devices

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 ...More

数据表下载