EVAL-ADM1276EBZ Analog Devices, EVAL-ADM1276EBZ Datasheet - Page 25

• Manufacturer Part Number: EVAL-ADM1276EBZ
• Description: Power Management IC Development Tools EVALUATION BOARD
• Manufacturer: Analog Devices
• Type: Hot Swap & Power Distributionr
• Series: ADM1276r

Specifications of EVAL-ADM1276EBZ

• Rohs: yes
• Tool Is For Evaluation Of: ADM1276
• Input Voltage: 20 V
• Factory Pack Quantity: 1

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.
S
S
S
S
MASTER TO SLAVE
SLAVE TO MASTER
MASTER TO SLAVE
SLAVE TO MASTER
SLAVE ADDRESS
SLAVE ADDRESS
SLAVE ADDRESS
SLAVE ADDRESS
S
S
MASTER TO SLAVE
SLAVE TO MASTER
SLAVE ADDRESS
SLAVE ADDRESS
W
W
W
W
S
S
S
S
A
A
MASTER TO SLAVE
SLAVE TO MASTER
MASTER TO SLAVE
SLAVE TO MASTER
A
A
SLAVE ADDRESS
SLAVE ADDRESS
SLAVE ADDRESS
SLAVE ADDRESS
COMMAND CODE
COMMAND CODE
COMMAND CODE
COMMAND CODE
W
W
A
A
Figure 53. Receive Byte and Receive Byte with PEC
Figure 56. Write Word and Write Word with PEC
COMMAND CODE
COMMAND CODE
Figure 54. Write Byte and Write Byte with PEC
Figure 55. Read Byte and Read Byte with PEC
Figure 52. Send Byte and Send Byte with PEC
W
W
R
R
A
A
A
A
A
A
A
A
Sr
Sr
Rev. B | Page 25 of 48
DATA BYTE LOW
DATA BYTE LOW
SLAVE ADDRESS
SLAVE ADDRESS
DATA BYTE
DATA BYTE
DATA BYTE
DATA BYTE
A
A
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 .
DATA BYTE
DATA BYTE
A
A
A
A
A
A
R
R
P
P
A
A
DATA BYTE HIGH
DATA BYTE HIGH
PEC
DATA BYTE
DATA BYTE
PEC
A
A
P
PEC
A
A
A
A
A
A
P
P
P
P
PEC
A
PEC
P
ADM1276
A
A
P
P