参数资料
型号: EVAL-ADM1276EBZ
厂商: Analog Devices Inc
文件页数: 25/48页
文件大小: 0K
描述: BOARD EVAL FOR ADM1276
标准包装: 1
系列: *
Data Sheet
SMBus MESSAGE FORMATS
Figure 52 to Figure 60 show all the SMBus protocols supported
by the ADM1276 , along with the PEC variant. In these figures,
unshaded cells indicate that the bus host is actively driving the
bus; shaded cells indicate that the ADM1276 is driving the bus.
Figure 52 to Figure 60 use the following abbreviations:
S is the start condition.
Sr is the repeated start condition.
P is the stop condition.
R is the read bit.
ADM1276
W is the write bit.
A is the acknowledge bit (0).
A is the acknowledge bit (1).
“A” represents the acknowledge bit. The acknowledge bit is typi-
cally active low (Logic 0) if the transmitted byte is successfully
received by a device. However, when the receiving device is the
bus master, the acknowledge bit for the last byte read is a Logic 1,
indicated by A.
S
SLAVE ADDRESS
W
A
DATA BYTE
A
P
S
SLAVE ADDRESS
W
A
DATA BYTE
A
PEC
A
P
MASTER TO SLAVE
SLAVE TO MASTER
Figure 52. Send Byte and Send Byte with PEC
S
SLAVE ADDRESS
R
A
DATA BYTE
A
P
S
SLAVE ADDRESS
R
A
DATA BYTE
A
PEC
A
P
MASTER TO SLAVE
SLAVE TO MASTER
Figure 53. Receive Byte and Receive Byte with PEC
S
SLAVE ADDRESS
W
A
COMMAND CODE
A
DATA BYTE
A
P
S
SLAVE ADDRESS
W
A
COMMAND CODE
A
DATA BYTE
A
PEC
A
P
MASTER TO SLAVE
SLAVE TO MASTER
Figure 54. Write Byte and Write Byte with PEC
S
SLAVE ADDRESS
W
A
COMMAND CODE
A Sr
SLAVE ADDRESS
R
A
DATA BYTE
A
P
S
SLAVE ADDRESS
W
A
COMMAND CODE
A Sr
SLAVE ADDRESS
R
A
DATA BYTE
A
PEC
A
P
MASTER TO SLAVE
SLAVE TO MASTER
Figure 55. Read Byte and Read Byte with PEC
S
SLAVE ADDRESS
W
A
COMMAND CODE
A
DATA BYTE LOW
A
DATA BYTE HIGH
A
P
S
SLAVE ADDRESS
W
A
COMMAND CODE
A
DATA BYTE LOW
A
DATA BYTE HIGH
A
PEC
A
P
MASTER TO SLAVE
SLAVE TO MASTER
Figure 56. Write Word and Write Word with PEC
Rev. C | Page 25 of 48
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