LTC2977 datasheet(54/138 Pages) AD

54 / 138 page

LTM4664A

Rev. 0

For more information www.analog.com

Figure 11. PMBus Packet Protocol Diagram Element Key

4664A F11

START CONDITION

REPEATED START CONDITION

READ (BIT VALUE OF 1)

WRITE (BIT VALUE OF 0)

ACKNOWLEDGE (THIS BIT POSITION MAY BE 0

FOR AN ACK OR 1 FOR A NACK)

STOP CONDITION

PEC PACKET ERROR CODE

MASTER TO SLAVE

SLAVE TO MASTER

CONTINUATION OF PROTOCOL

...

SLAVE ADDRESS Rd/Wr A P

4664A F12

1 1

SLAVE ADDRESS

COMMAND CODE

Wr A

A P

4664A F13

1 1

SLAVE ADDRESS

COMMAND CODE

PEC

Wr A

A P

4664A F14

1 1

SLAVE ADDRESS

COMMAND CODE

DATA BYTE

Wr A

A P

1 1

4664A F15

SLAVE ADDRESS

COMMAND CODE

DATA BYTE

Wr A

A P

4664A F16

PEC

1 1

SLAVE ADDRESS

COMMAND CODE

DATA BYTE

Wr A

A P

4664A F17

DATA BYTE

1 1

SLAVE ADDRESS

COMMAND CODE

DATA BYTE

Wr A

A P

4664A F18

DATA BYTE

PEC

1 1

FIGURE 11 THRU FIGURE 28 PMBus PROTOCOLS

Figure 12. Quick Command Protocol

Figure 13. Send Byte Protocol

Figure 14. Send Byte Protocol with PEC

Figure 15. Write Byte Protocol

Figure 16. Write Byte Protocol with PEC

Figure 17. Write Word Protocol

Figure 18. Write Word Protocol with PEC

DUAL 25A/30A PSM OPERATION

LTC2977 Datasheet(PDF) 54 Page - Analog Devices

LTC2977 Datasheet(HTML) 54 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

Datasheet Download

Link URL