LP3943_15 Datasheet, PDF (11/25 Pages) Texas Instruments – RGB, White, Blue 16-LED Fun Light Driver

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LP3943
SNVS256C – NOVMEBER 2003 – REVISED OCTOBER 2015
Programming (continued)
In the READ mode, when auto increment is enabled, I²C master could receive any number of bytes from LP3943
without selecting chip address and register address again. Every time the I²C master reads a register, the
LP3943 increments the register address, and the next data register is read. When I²C master reaches the last
register (09H), the register address rolls over to 00H.
In the WRITE mode, when auto increment is enabled, the LP3943 increments the register address every time I²C
master writes to register. When the last register (09H register) is reached, the register address rolls over to 02H,
not 00H, because the first two registers in LP3943 are read-only registers. It is possible to write to the first two
registers independently, and the LP3943 device will acknowledge, but the data is ignored.
If auto increment is disabled, and the I²C master does not change register address, it continues to write data into
the same register.
Figure 8. Programming With Auto Increment Disabled (in WRITE Mode)
Figure 9. Programming With Auto Increment Enabled (in WRITE Mode)
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