TLC5930PWPR Datasheet, PDF (33/40 Pages) Texas Instruments – 12-CHANNEL LED DRIVER

TLC5930
SLLS528 – MARCH 2002
PRINCIPLES OF OPERATION
color tone correction current
The color tone correction current, I_CC, can be calculated with I′_CC established by color tone correction data, and
logic signal, S_CC, for color tone correction current switch established by the combination of color tone correction
control data with logic signal for main current switch, using the following expression.
I′_CC is expressed depending on color tone correction data r_CC1 through r_CC4 as follows.
ǒ Ǔ ^{IȀCC(0) + IȀCC(1) + IȀCC(2) +} ₂
1
4 * r_CC1[7:6]
r_CC1[5:0]
64
I_IREF
(6)
ǒ Ǔ IȀCC(3) + IȀCC(4) + IȀCC(5) +
2
1
4 * r_CC2[7:6]
r_CC2[5:0]
64
I_IREF
(7)
ǒ Ǔ IȀCC(6) + IȀCC(7) + IȀCC(8) +
2
1
4 * r_CC3[7:6]
r_CC3[5:0]
64
I_IREF
(8)
ǒ Ǔ IȀCC(9) + IȀCC(10) + IȀCC(11) +
2
1
4 * r_CC4[7:6]
r_CC4[5:0]
64
I_IREF
(9)
S_CC is set up by color tone correction control switch, S_CCEN, established by color tone correction control data
r_CCEN and S_MAIN. S_CCEN is expressed as follows:
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ^SSSSSSCCCCCCÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ^CCCCCCEEEEEEÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ^{NNNNNN123456 ======}ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ^{{{{{{ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ^101010101010ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ:::::::::::: eeeeeerrrrrr^CCCCCCxxxxxxÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ^CCCCCCcccccceeeeee^EEEEEEpppppp^NNNNNNÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁtttttt======tttttthhhhhh000111ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁeeeeee011001aaaaaa101010ÁÁÁÁÁÁÁbbbbbb^{ÁÁÁÁÁÁÁÁÁÁÁÁÁ}oooooo((((((vvvvvvbbbbbbÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁeeeeeeiiiiiinnnnnn)))))) ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
www.ti.com
33