Datasheet

…
…
SCLK
SDATA
StopStart
A6 R7A5 R6A4 R5 D7 D6 D5 D0R0
R/W ACK
ACK
ACK
A0
0 0 00
…
…
… …
… …
Register AddressSlave Address
Data
Note:Slave=bq29330
Stop
… …
…… …
…
SCLK
A6 A5
A0
R/W
R/W
ACK
ACK
ACK
R7 A6 D7
D6
D0
NACK
A0
R6
R0
SDATA
Start
0 0 0 1 0
…
Start
Slave Address
Register Address
Slave Address
SlaveDrives
TheData
Master
Drives
NACKand
Stop
Note:Slave=bq29330
… …
……
…
…
SCLK
SDATA
0
…
…
Stop
Stop
A6 A6A5 A5A0 R/W R/WACK ACKACKR7 D7 D0
NACK
A0R6 R0
Note:Slave=bq29330
Start
Start
Register Address
Slave
Slave Address
SlaveDrives
TheData
Master
Drives
NACKand
Stop
bq29330
SLUS673E –SEPTEMBER 2005–REVISED MARCH 2012 www.ti.com
Figure 5. I
2
C-Bus Write to bq29330
Figure 6. I
2
C-Bus Read from bq29330: Protocol A
Figure 7. I
2
C-Bus Read from bq29330: Protocol B
REGISTER MAP
The bq29330 has nine addressable registers. These registers provide status, control, and configuration
information for the battery protection system.
NAME ADDR TYPE DESCRIPTION
STATUS 0x00 R Status register
OUTPUT_CONTROL 0x01 R/W Output pin control from system host and external pin status
STATE_CONTROL 0x02 R/W State control
FUNCTION_CONTROL 0x03 R/W Function control
CELL _SEL 0x04 R/W Battery cell select for cell translation and balance bypass and select mode for calibration
OLV 0x05 R/W Overload voltage threshold
OLD 0x06 R/W Overload delay time
SCC 0x07 R/W Short circuit in charge current threshold voltage and delay
SCD 0x08 R/W Short circuit in discharge current threshold voltage and delay
18 Submit Documentation Feedback Copyright © 2005–2012, Texas Instruments Incorporated
Product Folder Link(s): bq29330