LTC4280
22
4280f
 APPLICATIONS INFORMATION
S ADDRESS
1 0 a4:a0
4280 F07
FROM MASTER TO SLAVE
FROM SLAVE TO MASTER
A: ACKNOWLEDGE (LOW)
A: NOT ACKNOWLEDGE (HIGH)
R: READ BIT (HIGH)
W: WRITE BIT (LOW)
S: START CONDITION
P: STOP CONDITION
COMMAND
DATA
X X X X X b2:b0
0
W
0
0
0
b7:b0
A
A
A  P
Figure 7. LTC4280 Serial Bus SDA Write Byte Protocol
S   ADDRESS
1 0 a4:a0
COMMAND
DATA
DATA
X X X X X b2:b0
0
W
0
0
0
0
4280 F08
X X X X X X X X
b7:b0
A
A
A
A  P
Figure 8. LTC4280 Serial Bus SDA Write Word Protocol
S   ADDRESS
1 0 a4:a0
1 0 a4:a0   1  0
COMMAND
S  ADDRESS   R  A
b7:b0  1
DATA
X X X X X b2:b0
0
W
0
0
4280 F09
A
A
A  P
Figure 9. LTC4280 Serial Bus SDA Read Byte Protocol
S   ADDRESS
1 0 a4:a0
1 0 a4:a0   1  0
COMMAND
S  ADDRESS   R  A
b7:b0
1
DATA
X X X X X b2:b0
0
W
0
0
4280 F10
A
0
A
b7:b0
DATA
A
A  P
Figure 10. LTC4280 Serial Bus SDA Read Word Protocol
S
ALERT
RESPONSE
ADDRESS
0 0 0 1 1 0 0
DEVICE
ADDRESS
1 0 a4:a0 0   1
1
R
0
4280 F11
A
A
P
Figure 11. LTC4280 Serial Bus SDA Alert Response Protocol
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