User Manual

WS2811
Signal line 256 Gray level 3 channal
Constant current LED drive IC
http://www.world-semi.com
Sequence chart:
0 c o d e
1 c o d e
R E T c o d e
T 0 H
T 0 L
T 1 H
T 1 L
T r e s e t
Cascade method:
D I N D I N D I ND O D O D O
I C 1 I C 2 I C 3
D 1
D 2
D 3
D 4
Data transmission method:
Note: The data of D1 is send by MCU,and D2, D3, D4 through IC internal reshaping amplification to
transmit.
Composition of 24bit data:
R7 R6 R5 R4 R3 R2 R1 R0 G7 G6 G5 G4 G3 G2 G1 G0 B7 B6 B5 B4 B3 B2 B1 B0
Note: Follow the order of RGB to sent data and the high bit sent at first.
D a t a r e f r e s h c y c l e 1
D a t a r e f r e s h c y c l e 2
f i r s t 2 4 b i t
s e c o n d
2 4 b i t
t h i r d 2 4 b i t
f i r s t 2 4 b i t
s e c o n d
2 4 b i t
t h i r d 2 4 b i t
s e c o n d
2 4 b i t
t h i r d 2 4 b i t
s e c o n d
2 4 b i t
t h i r d 2 4 b i t
t h i r d 2 4 b i t t h i r d 2 4 b i t
D 1
D 2
D 3
D 4
r e s e t c o d e
> = 5 0 u s
r e s e t
c o d e