LTC2977 datasheet(132/138 Pages) AD

132 / 138 page

LTM4664A

132

Rev. 0

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Table 20. Fault Logging

This table outlines the format of the block data from a read block data of the MFR_FAULT_LOG command.

Data Format Definitions

LIN 11 = PMBus = Rev 1.2, Part 2, section 7.1

LIN 16 = PMBus Rev 1.2, Part 2, section 8. Mantissa portion only

BYTE = 8 bits interpreted per definition of this command

DATA

BITS

DATA

FORMAT BYTE NUM BLOCK READ COMMAND

Block Length

BYTE

147

The MFR_FAULT_LOG command is a fixed length of 147 bytes

The block length will be zero if a data log event has not been captured

HEADER INFORMATION

Fault Log Preface

[7:0]

ASC

Returns LTxx beginning at byte 0 if a partial or complete fault log exists.

Word xx is a factory identifier that may vary part to part.

[7:0]

[15:8]

Reg

[7:0]

Fault Source

[7:0]

Reg

Refer to Table 16.

MFR_REAL_TIME

[7:0]

Reg

48 bit share-clock counter value when fault occurred (200µs resolution).

[15:8]

[23:16]

[31:24]

[39:32]

[47:40]

MFR_VOUT_PEAK (PAGE 0)

[15:8]

L16

Peak READ_VOUT on Channel 0 since last power-on or CLEAR_PEAKS

command.

[7:0]

MFR_VOUT_PEAK (PAGE 1)

[15:8]

L16

Peak READ_VOUT on Channel 1 since last power-on or CLEAR_PEAKS

command.

[7:0]

MFR_IOUT_PEAK (PAGE 0)

[15:8]

L11

Peak READ_IOUT on Channel 0 since last power-on or CLEAR_PEAKS

command.

[7:0]

MFR_IOUT_PEAK (PAGE 1)

[15:8]

L11

Peak READ_IOUT on Channel 1 since last power-on or CLEAR_PEAKS

command.

[7:0]

MFR_VIN_PEAK

[15:8]

L11

Peak READ_VIN since last power-on or CLEAR_PEAKS command.

[7:0]

READ_TEMPERATURE1 (PAGE 0)

[15:8]

L11

External temperature sensor 0 during last event.

[7:0]

READ_TEMPERATURE1 (PAGE 1)

[15:8]

L11

External temperature sensor 1 during last event.

[7:0]

READ_TEMPERATURE2

[15:8]

L11

LTM4664A die temperature sensor during last event.

[7:0]

PMBus COMMAND DETAILS

LTC2977 Datasheet(PDF) 132 Page - Analog Devices

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