Rainbow-electronics MAX16064 User Manual download pdf (Page 29)

MAX16064

±0.3% Accurate, Quad, Power-Supply Controller with

Active-Voltage Output Control and PMBus Interface

______________________________________________________________________________________ 29

S = START CONDITION

SR = REPEATED START CONDITION

P = STOP CONDITION

= SLAVE TRANSMISSION

SEND BYTE FORMAT

COMMAND BYTE: SEND

COMMAND WITH NO

DATA

PECS ADDR W A COMMAND A

7 BITS 8 BITS 8 BITS

DATA BYTES: DATA FOR THE COMMAND

SET BY THE COMMAND BYTE

READ WORD FORMAT

DATA0 A DATA1 A PEC

8 BITS

SR ADDR R A

7 BITS

SLAVE ADDRESS:

REPEATED DUE TO

CHANGE IN DATA-

FLOW DIRECTION

DATA BYTES: DATA FOR THE

COMMAND SET BY THE

COMMAND BYTE

WRITE WORD FORMAT

S ADDR W A COMMAND A

7 BITS 8 BITS

DATA0 A DATA1 A PEC

8 BITS 8 BITS 8 BITS

S ADDR W A COMMAND A

7 BITS 8 BITS

8 BITS

COMMAND BYTE:

SELECTS TO WHICH

COMMAND PARAMETER

TO WRITE

COMMAND BYTE:

SELECTS TO WHICH

COMMAND PARAMETER

TO WRITE

COMMAND BYTE:

SELECTS FROM WHICH

COMMAND PARAMETER

TO READ

COMMAND BYTE:

SELECTS FROM WHICH

COMMAND PARAMETER

TO READ

DATA BYTE:

DATA FOR

THE COMMAND

SET BY THE

COMMAND BYTE

SLAVE

ADDRESS

SLAVE

ADDRESS

SLAVE

ADDRESS

SLAVE

ADDRESS

DATA BYTES: DATA

FOR THE COMMAND

SET BY THE

COMMAND BYTE

READ BYTE FORMAT

WRITE BYTE FORMAT

SLAVE ADDRESS:

REPEATED DUE TO

CHANGE IN DATA-

FLOW DIRECTION

DATA

8 BITS

SR ADDR R A

7 BITS

S ADDR W A COMMAND A

7 BITS 8 BITS

DATA A

8 BITS

S ADDR W A COMMAND A

7 BITS 8 BITS

PPEC A

8 BITS

A PEC

8 BITS

A P

8 BITS

A P

Figure 14. SMBus Protocols with PEC

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MAX16064 1

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