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LTM4677 Datasheet(PDF) 36 Page - Analog Devices

Part # LTM4677
Description  Dual Loop 8-Phase Step-Down DC/DC Controller with Digital Power System Management
PDF  110 Pages
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Manufacturer  AD [Analog Devices]
Direct Link  http://www.analog.com
Logo AD - Analog Devices

LTM4677 Datasheet(HTML) 36 Page - Analog Devices

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LTC3888-1
36
Rev. 0
For more information www.analog.com
OPERATION
Figure 4. PMBus Packet Protocol Diagram Element Key
Figure 5. Quick Command Protocol
Figure 6. Send Byte Protocol
Figure 7. Send Byte Protocol with PEC
388812 F04
S
START CONDITION
Sr
REPEATED START CONDITION
Rd
READ (BIT VALUE OF 1)
Wr
WRITE (BIT VALUE OF 0)
A
ACKNOWLEDGE (BIT SHOULD BE 0), OR
NA
NOT ACKNOWLEDGE (BIT SHOULD BE 1)
P
STOP CONDITION
PEC PACKET ERROR CODE
MASTER TO SLAVE
SLAVE TO MASTER
CONTINUATION OF PROTOCOL
...
SLAVE ADDRESS Rd/Wr A P
388812 F05
S
7
1
1 1
1
SLAVE ADDRESS
COMMAND CODE
Wr A
A P
388812 F06
S
7
8
1 1
1 1
1
SLAVE ADDRESS
COMMAND CODE
PEC
Wr A
A
A P
388812 F07
S
7
8
8
1 1
1
1 1
1
Figure 8. Write Byte Protocol
Figure 9. Write Byte Protocol with PEC
SLAVE ADDRESS
COMMAND CODE
DATA BYTE
Wr A
A
A P
388812 F09
S
7
8
8
1
PEC
8
1 1
1
1 1
1
A
SLAVE ADDRESS
COMMAND CODE
DATA BYTE LOW
Wr A
A
A P
388812 F10
S
7
8
8
1
DATA BYTE HIGH
8
1 1
1
1 1
1
A
Figure 10. Write Word Protocol
SLAVE ADDRESS
COMMAND CODE
DATA BYTE
Wr A
A
A P
388812 F08
S
7
8
8
1 1
1
1 1
1



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