Datasheet

1
7
Slave Address
S
1
1
ACK
8
Reg Addr
ACK
1
0
1
7
Slave Address
S
1
1
ACK
1
8
Data @ Addr
1
ACK
8
Data @ Addr+1
ACK
1
8
Data @ Addr+1
ACK
1
P
1
1
7
Slave Address
S
1
1
ACK
8
Reg Addr
ACK
1
0
8
Slave Address
1
ACK
8
Data to Addr+1
ACK
1
8
Data to Addr+1
ACK
1
P
1
bq24190, bq24192
bq24192I, bq24193
SLUSAW5A –JANUARY 2012–REVISED OCTOBER 2012 www.ti.com
If the register address is not defined, the charger IC send back NACK and go back to the idle state.
Multi-Read and Multi-Write
The charger device supports multi-read and multi-write on REG00 through REG08.
Figure 39. Multi-Write
Figure 40. Multi-Read
The fault register REG09 locks the previous fault and only clears it after the register is read. For example, if
Charge Safety Timer Expiration fault occurs but recovers later, the fault register REG09 reports the fault when it
is read the first time, but returns to normal when it is read the second time. To verify real time fault, the fault
register REG09 should be read twice to get the real condition. In addition, the fault register REG09 does not
support multi-read or multi-write.
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Product Folder Links: bq24190 bq24192 bq24192I bq24193