TLC5930 Datasheet, PDF (17/39 Pages) Texas Instruments – 12-CHANNEL LED DRIVER

TLC5930
SLLS528 – MARCH 2002
PRINCIPLES OF OPERATION
The color tone correction register latch is configured with a 4 pixel × 8 bit, and the current value for color tone
correction by pixel can be adjusted between 50% and 0% when output current is set to 100% by adjusting
external resistor and brightness adjustment data. The color tone correction is divided into the coarse adjustment
with 2 bit / 4 steps and the fine adjustment with 6 bit / 64 steps. The current value for the coarse adjustment can
be set to 6.25%, 12.5%, 25% or 50% when current is set to 100% by adjusting external resistor and brightness
adjustment data. The current value for the fine adjustment can be adjusted in 64 steps as 1 step of 1.6% of
current ratio between 100% and 0% when current set at the coarse adjustment is 100%. By using this function,
color tone deviation for RGB can be individually corrected.
This packet sets the current value for color tone correction only, thus setting color tone correction control packet
to ON/OFF is required for effective color tone correction.
Table 5. Packet Configuration (48-bit)
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ _ID
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ^(bin)
CMD
(bin)
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ _{xxxxxxxx 00001000}
PIXEL1
(OUT0, OUT1, OUT2)
8 bit
DATA
PIXEL2
(OUT3, OUT4, OUT5)
PIXEL3
(OUT6, OUT7, OUT8)
8 bit
8 bit
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ _MSB
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ _{COARSE ADJ}
(2 bit)
Pixel n
LSB
FINE ADJUSTMENT (6 bit)
CURRENT VALUE SET BY COARSE TO 0%
PIXEL4
(OUT9, OUT10, OUT11)
8 bit
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ _{dt[7] dt[6] dt[5] dt[4] dt[3] dt[2] dt[1] dt[0]}
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ₁
1
0
0
0
0
0
0
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ₁
1
0
0
0
0
0
1
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ _.
.
.
.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ _.
.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ₁
1
1
1
1
1
1
0
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ₁
1
1
1
1
1
1
1
RELATIVE
CURRENT
RATIO (%)
0.0
1.6
.
.
.
98.4
100.0
IOLC = 40 mA
COARSE
ADJUSTMENT
(3h) (mA)
0.0
0.3
.
.
.
19.7
20.0
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ CURRENT VALUE AFTER PLANE BRIGHTNESS
ADJUSTMENT (%)
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ₀
0
6.25%
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ₁
1
12.5%
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ₁
0
25.0%
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ 1
1
50.0%
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ^{(xx08xxxxxxxxh) After ID and CMD 8 bit data continues 4 set.}
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