LP3952 Datasheet, PDF (16/44 Pages) National Semiconductor (TI) – 6-Channel Color LED Driver with Audio Synchronization

LOOP CONTROL
Pattern generator commands can be looped using the LOOP bit (D1) in Pattern gen ctrl register (11H). If LOOP=1 the program
will be looped from the command 8 register or if there is 0000 0000 and 0000 0000 in one command register. The loop will start
from command 1 and continue until stopped by writing rgb_start=0 or loop=0. The example of loop is shown in following figure:
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SINGLE PROGRAM
If control bit LOOP=0 the program will start from Command 1 and run to either last command or to empty “0000 0000 / 0000 0000”
command.
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The LEDs maintain the brightness of the last command when the single program stops. Changes in command register will not be
effective in this phase. The RGB_START bit has to be toggled off and on to make changes effective.
START BIT
Pattern_gen_ctrl register’s RGB_START bit will enable command execution starting from Command 1.
Pattern gen ctrl register (11H)
rgb_start
Bit 2
0 – Pattern generator disabled
1 – execution pattern starting from command 1
loop
Bit 1
0 – pattern generator loop disabled (single pattern)
1 – pattern generator loop enabled (execute until stopped)
log
Bit 0
0 – color intensity mode 0
1 – color intensity mode 1
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