ADP1050ACPZ-R7 datasheet(40/93 Pages) AD

40 / 93 page

Data Sheet

ADP1050

Rev. A | Page 39 of 92

SMBus and I2C specifications for in-depth descriptions of the

transfer protocols.

Figure 37 through Figure 44 use the abbreviations listed in Table 10.

Table 10. Abbreviations Used in Data Transfer Diagrams

Abbreviation

Description

Setting1

Start condition

N/A

Stop condition

N/A

Repeated start condition

N/A

Write bit

Read bit

Acknowledge bit

No acknowledge bit

1 N/A means not applicable.

Command Overview

Data transfer using the PMBus slave is established using PMBus

commands. The PMBus specification requires that all PMBus

commands start with a slave address, with the R/W bit cleared

to 0, followed by the command code. All PMBus commands that

are supported by the ADP1050 follow one of the protocol types

shown in Figure 38 through Figure 44.

The ADP1050 also supports manufacturer specific extended

commands. These commands follow the same protocol as the

standard PMBus commands; however, the command code

consists of two bytes that range from 0xFF00 to 0xFFAF.

Using the manufacturer specific extended commands, the PMBus

device manufacturer can add an additional 256 manufacturer

specific commands to its PMBus command set.

MASTER TO SLAVE

SLAVE TO MASTER

7-BIT SLAVE

ADDRESS

8-BIT DATA

Figure 37. Basic Data Transfer

7-BIT SLAVE ADDRESS

COMMAND CODE

MASTER TO SLAVE

SLAVE TO MASTER

Figure 38. Send Byte Protocol

ADATA BYTE

7-BIT SLAVE

ADDRESS

COMMAND

CODE

MASTER TO SLAVE

SLAVE TO MASTER

Figure 39. Write Byte Protocol

COMMAND

CODE

DATA BYTE

LOW

7-BIT SLAVE

ADDRESS

DATA BYTE

HIGH

MASTER TO SLAVE

SLAVE TO MASTER

Figure 40. Write Word Protocol

7-BIT SLAVE

ADDRESS

COMMAND

CODE

RDATA BYTE

7-BIT SLAVE

ADDRESS

MASTER TO SLAVE

SLAVE TO MASTER

Figure 41. Read Byte Protocol

7-BIT SLAVE

ADDRESS

COMMAND

CODE

7-BIT SLAVE

ADDRESS

MASTER TO SLAVE

SLAVE TO MASTER

DATA BYTE

LOW

DATA BYTE

HIGH

Figure 42. Read Word Protocol

7-BIT SLAVE

ADDRESS

COMMAND

CODE

BYTE COUNT =

DATA BYTE 1

DATA BYTE N

MASTER TO SLAVE

SLAVE TO MASTER

Figure 43. Block Write Protocol

7-BIT SLAVE

ADDRESS

7-BIT SLAVE

ADDRESS

COMMAND

CODE

BYTE COUNT =

DATA BYTE 1

MASTER TO SLAVE

SLAVE TO MASTER

DATA BYTE N

Figure 44. Block Read Protocol

ADP1050ACPZ-R7 数据表(PDF) 40 Page - Analog Devices

ADP1050ACPZ-R7 数据表(HTML) 40 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

数据表下载

链接网址

ADP1050ACPZ-R7 数据表(PDF) 40 Page - Analog Devices

ADP1050ACPZ-R7 数据表(HTML) 40 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

数据表 下载

链接网址

数据表下载