參數(shù)資料
型號: LTC2941IDCB#TRPBF
廠商: LINEAR TECHNOLOGY CORP
元件分類: 電源管理
英文描述: POWER SUPPLY SUPPORT CKT, PDSO6
封裝: 2 X 3 MM, LEAD FREE, PLASTIC, MO-229, DFN-6
文件頁數(shù): 4/16頁
文件大?。?/td> 199K
代理商: LTC2941IDCB#TRPBF
LTC2941
12
2941fa
applicaTions inFormaTion
Alert Response Protocol
Inasystemwhereseveralslavesshareacommoninterrupt
line, the master can use the alert response address (ARA)
todeterminewhichdeviceinitiatedtheinterrupt(Figure9).
FROM MASTER TO SLAVE
S
W
ADDRESS
REGISTER
DATA
FROM SLAVE TO MASTER
2941 F05
A: ACKNOWLEDGE (LOW)
A: NOT-ACKNOWLEDGE (HIGH)
R: READ BIT (HIGH)
W: WRITE BIT (LOW)
S: START CONDITION
P: STOP CONDITION
A
0
1100100
01h
FCh
0
P
Figure 5. Writing FCh to LTC2941 Control Register (B)
S
W
ADDRESS
REGISTER
DATA
2941 F06
A
0
1100100
02h
F0h
01h
0
P
DATA
A
Figure 6. Writing F001h to the LTC2941 Accumulated Charge Registers (C, D)
S
W
ADDRESS
REGISTER
S
2941 F07
A
ADDRESS
0
1100100
00h
1
0
1100100
0
P
R
1
A
81h
DATA
A
Figure 7. Reading the LTC2941 Status Register (A)
S
W
ADDRESS
REGISTER
S
2941 F08
A
ADDRESS
0
1100100
02h
1
0
1100100
0
P
R
0
A
80h
DATA
01h
DATA
A
1
A
Figure 8. Reading the LTC2941 Accumulated Charge Registers (C, D)
S
R
ALERT RESPONSE ADDRESS
DEVICE ADDRESS
2941 F09
A
1
0001100
11001001
0
1
P
A
Figure 9. LTC2941 Serial Bus SDA Alert Response Protocol
The master initiates the ARA procedure with a START con-
dition and the special 7-bit ARA bus address (0001100)
followed by the read bit (R) = 1. If the LTC2941 is asserting
theAL/CCpininalertmode,itacknowledgesandresponds
by sending its 7-bit bus address (1100100) and a 1. While
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