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LTC4215CUFD 데이터시트(PDF) 20 Page - Linear Technology

부품명 LTC4215CUFD
상세설명  Hot Swap Controller with I2C Compatible Monitoring
PDF  28 Pages
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제조업체  LINER [Linear Technology]
홈페이지  http://www.linear.com
Logo LINER - Linear Technology

LTC4215CUFD 데이터시트(HTML) 20 Page - Linear Technology

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LTC4215/LTC4215-2
20
4215fe
APPLICATIONS INFORMATION
S
ADDRESS
1 0 a4:a0
4215 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
00
0
b7:b0
A
A
AP
Figure 7. LTC4215 Serial Bus SDA Write Byte Protocol
S
ADDRESS
1 0 a4:a0
COMMAND
DATA
DATA
X X X X X b2:b0
0
W
00
0
0
4215 F08
X X X X X X X X
b7:b0
A
A
A
AP
Figure 8. LTC4215 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
00
4215 F10
A
A
A P
Figure 9. LTC4215 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
00
4215 F11
A
0
A
b7:b0
DATA
A
A P
Figure 10. LTC4215 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
4215 F11
A
A P
Figure 11. LTC4215 Serial Bus SDA Alert Response Protocol
The transmission is ended when the master sends a STOP
condition. If the master continues sending a second data
byte, as in a Write Word command, the second data byte
is acknowledged by the LTC4215 but ignored, as shown
in Figure 8.
Read Protocol
The master begins a read operation with a START condition
followed by the seven bit slave address and the R/W bit
set to zero, as shown in Figure 9. The addressed LTC4215
acknowledges this and then the master sends a command
byte which indicates which internal register the master
wishes to read. The LTC4215 acknowledges this and then
latches the lower three bits of the command byte into its
internal Register Address pointer. The master then sends
a repeated START condition followed by the same seven
bit address with the R/W bit now set to one. The LTC4215
acknowledges and send the contents of the requested
register. The transmission is ended when the master
sends a STOP condition. If the master acknowledges
the transmitted data byte, as in a Read Word command,
Figure 10, the LTC4215 repeats the requested register as
the second data byte.



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