LP3954 Datasheet, PDF (14/56 Pages) National Semiconductor (TI) – Advanced Lighting Management Unit

Command Based Pattern Generator for Color LEDs
The LP3954 has a unique stand-alone command based pattern generator with 8 user controllable 16-bit wide commands. Since
write registers are 8-bit long one command requires 2 write cycles. Each command has intensity level for each LED, command
execution time (CET) and transition time (TT). The command structure is shown in following two figures.
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COMMAND REGISTER WITH 8 COMMANDS
COMMAND 1 ADDRESS 50H R2
R1
R0
G2
G1
G0 CET3 CET2
ADDRESS 51H CET1 CET0 B2
B1
B0
TT2 TT1 TT0
COMMAND 2 ADDRESS 52H R2
R1
R0
G2
G1
G0 CET3 CET2
ADDRESS 53H CET1 CET0 B2
B1
B0
TT2 TT1 TT0
COMMAND 3 ADDRESS 54H R2
R1
R0
G2
G1
G0 CET3 CET2
ADDRESS 55H CET1 CET0 B2
B1
B0
TT2 TT1 TT0
COMMAND 4 ADDRESS 56H R2
R1
R0
G2
G1
G0 CET3 CET2
ADDRESS 57H CET1 CET0 B2
B1
B0
TT2 TT1 TT0
COMMAND 5 ADDRESS 58H R2
R1
R0
G2
G1
G0 CET3 CET2
ADDRESS 59H CET1 CET0 B2
B1
B0
TT2 TT1 TT0
COMMAND 6 ADDRESS 5AH R2
R1
R0
G2
G1
G0 CET3 CET2
ADDRESS 5BH CET1 CET0 B2
B1
B0
TT2 TT1 TT0
COMMAND 7 ADDRESS 5CH R2
R1
R0
G2
G1
G0 CET3 CET2
ADDRESS 5DH CET1 CET0 B2
B1
B0
TT2 TT1 TT0
COMMAND 8 ADDRESS 5EH R2
R1
R0
G2
G1
G0 CET3 CET2
ADDRESS 5FH CET1 CET0 B2
B1
B0
TT2 TT1 TT0
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