LTM4677 datasheet(70/110 Pages) AD

70 / 110 page

LTC3888-1

Rev. 0

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PMBus COMMAND DETAILS

PAGE

The PAGE command provides the ability to configure, control and monitor both master channels through only one

physical address, either the MFR_ADDRESS or global device address. Each PAGE contains the operating memory for

one master channel.

Pages 0x00 and 0x01 correspond to Channel 0 (or PWM0) and Channel 1 (or PWM1), respectively.

Setting PAGE to 0xFF applies any following paged commands to both master channels. With PAGE set to 0xFF the

LTC3888-1 will respond to read commands as if PAGE were set to 0x00 (Channel 0 results only).

This command has one data byte.

Figure 48. Example of PAGE_PLUS_WRITE

ADDRESSING AND WRITE PROTECT

COMMAND NAME

CMD

CODE DESCRIPTION

TYPE

PAGED

DATA

FORMAT UNITS NVM

DEFAULT

VALUE

PAGE

0x00 Channel (page) presently selected for any

paged command.

R/W Byte

Reg

0x00

PAGE_PLUS_WRITE

0x05 Write a command directly to a specified page. W Block

PAGE_PLUS_READ

0x06 Read a command directly from a specified

page.

Block R/W

Process

WRITE_PROTECT

0x10 Protect the device against unintended PMBus

modifications.

R/W Byte

Reg

0x00

MFR_ADDRESS

0xE6 Specify right-justified 7-bit device address.

R/W Byte

Reg

0x4F

MFR_RAIL_ADDRESS

0xFA Specify unique right-justified 7-bit address

for channels comprising a PolyPhase output.

R/W Byte

Reg

0x80

(by Functional Groups)

SLAVE

ADDRESS

PAGE_PLUS

COMMAND CODE

BLOCK COUNT

(= 4)

W A

PAGE

NUMBER

1 1

…

COMMAND

CODE

UPPER DATA

BYTE

A P

388812 F48

1 1

PEC BYTE

LOWER DATA

BYTE

PAGE_PLUS_WRITE

The PAGE_PLUS_WRITE command provides a way to set the page within a device, send a command and then send the

data for the command, all in one communication packet. Commands allowed by the present write protection level may

be sent with PAGE_PLUS_WRITE.

The value stored in the PAGE command is not affected by PAGE_PLUS_WRITE. If PAGE_PLUS_WRITE is used to send a

non-paged command, the Page Number byte is ignored.

This command uses Write Block protocol. An example of the PAGE_PLUS_WRITE command with PEC sending a command

that has two data bytes is shown in Figure 48.

LTM4677 Datasheet(PDF) 70 Page - Analog Devices

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