TCA6507_16 Datasheet, PDF (16/45 Pages) Texas Instruments – Low-Voltage 7-Bit I2C and SMBus LED Driver

TCA6507
SCPS164C – MAY 2007 – REVISED JANUARY 2016
Programming (continued)
– Master-receiver terminates the transfer with a STOP condition
SCL
SDA
ST AR T
Condition
Data Transfer
STOP
Condition
Figure 12. Definition of START and STOP Conditions
SDA line stable while SCL line is high
www.ti.com
SCL
1
0
1
0
1
0
1
0
ACK
SDA
MS B
Bit
Bit
Bit
Bit
Bit
Bit
LSB
ACK
Byte: 1010 1010 ( 0xAAh )
Figure 13. Bit Transfer
8.5.2 Bus Transactions
Data must be sent to and received from the slave devices, and this is accomplished by reading from or writing to
registers in the slave device.
Registers are locations in the memory of the slave that contain information, whether it be the configuration
information, or some sampled data to send back to the master. The master must write information to these
registers to instruct the slave device to perform a task.
16
Submit Documentation Feedback
Product Folder Links: TCA6507
Copyright © 2007–2016, Texas Instruments Incorporated