Datasheet

LTC2945
16
2945fa
For more information www.linear.com/LTC2945
Figure 4. LTC2945 Fault Alert Generation Blocks
applicaTions inForMaTion
Figure 5. General Data Transfer over I
2
C
DIGITAL
COMPARATOR
LOGIC
LATCH
STATUS
RESET
FAULT
ALERT
ENA_ALERT_RESPONSE
MEASURED
DATA
THRESHOLD
DATA
2945 F04
SDA
SCL
S P
a6 - a0 b7 - b0 b7 - b0
1 - 7 1 - 7 1 - 78 8 89 9 9
START
CONDITION
STOP
CONDITION
ADDRESS ACK DATA DATAACK ACKR/W
2945 F05
Figure 6. LTC2945 Serial Bus SDA Write Byte Protocol Figure 7. LTC2945 Serial Bus SDA Write Word Protocol
Figure 8. LTC2945 Serial Bus SDA Write Page Protocol Figure 9. LTC2945 Serial Bus SDA Read Byte Protocol
Figure 10. LTC2945 Serial Bus SDA Read Word Protocol
Figure 11. LTC2945 Serial Bus SDA Read Page Protocol
S ADDRESS
1 1 0 a3:a0
FROM MASTER TO SLAVE
FROM SLAVE TO MASTER
A: ACKNOWLEDGE (LOW)
A: NOT ACKNOWLEDGE (HIGH)
R: READ BIT (HIGH)
COMMAND DATA
X X b5:b00
W
0 0 0b7:b0
A A A P
2945 F06
W: WRITE BIT (LOW)
S: START CONDITION
P: STOP CONDITION
S ADDRESS
1 1 0 a3:a0
COMMAND DATA DATA
X X b5:b00
W
0 0 0 0
2945 F07
b7:b0b7:b0
A
A A A P
S ADDRESS
1 1 0 a3:a0
COMMAND
0X X b5:b00
W
0 0
2945 F08
A A A P
b7:b0
DATA
0
A
b7:b0
DATA
0
A
...
...
b7:b0
DATA
S ADDRESS
1 1 0 a3:a0 1 1 0 a3:a0 1 0
COMMAND S ADDRESS R A
b7:b0 1
DATA
X X b5:b00
W
0 0
2945 F09
A A A P
S ADDRESS
1 1 0 a3:a0 1 1 0 a3:a0 1 0
COMMAND S ADDRESS R A
b7:b0 1
DATA
X X b5:b00
W
0 0
2945 F10
A
0
A
b7:b0
DATA
A A P
S ADDRESS
1 1 0 a3:a0 1 1 0 a3:a0 1 0
COMMAND S ADDRESS R A
b7:b0 1
DATA
X X b5:b00
W
0 0
2945 F11
A
0
A
b7:b0
DATA
A A P
...
...
b7:b0
DATA