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TLC5971_15 Datasheet, PDF (9/45 Pages) Texas Instruments – 12-Channel, 16-Bit, Enhanced Spectrum, PWM, RGB, LED Driver
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TLC5971
SBVS146D – AUGUST 2010 – REVISED DECEMBER 2015
Write Command (6 Bits) Write Data (218 Bits)
SDTI
DATA
0A
WRT
CMD5
WRT
CMD4
tH
tSU
SCKI
12
224-Bit Shift Register
LSB (Internal)
DATA
0A
WRT WRT
CMD5 CMD4
WRT DATA
CMD0 217B
tWH
DATA DATA
2B
1B
DATA
0B
6
tWL
WRT DATA
CMD0 217B
222 223 224
DATA DATA
2B
1B
DATA
0B
WRT WRT WRT WRT WRT WRT DATA DATA
CMD5 CMD4 CMD3 CMD2 CMD1 CMD0 217C 216C
DATA
215C
1
2
3
4
5
6
7
8
9
WRT WRT WRT WRT WRT WRT DATA DATA
CMD5 CMD4 CMD3 CMD2 CMD1 CMD0 217C 216C
224-Bit Shift Register
LSB + 1 (Internal)
DATA
1A
DATA WRT
0A CMD5
WRT WRT
CMD1 CMD0
DATA DATA
3B
2B
DATA
1B
DATA WRT WRT WRT WRT WRT WRT DATA
0B CMD5 CMD4 CMD3 CMD2 CMD1 CMD0 217C
224-Bit Shift Register
MSB - 1 (Internal)
WRT
CMD4
WRT WRT
CMD3 CMD2
DATA DATA
216A 215A
DATA WRT
0A CMD5
WRT
CMD4
WRT WRT WRT WRT DATA DATA DATA DATA
CMD3 CMD2 CMD1 CMD0 217B 216B 215B 214B
224-Bit Shift Register
MSB (Internal)
WRT
CMD5
WRT WRT
CMD4 CMD3
Latch Signal
(Internal)
DATA DATA
217A 216A
DATA DATA
1A
0A
WRT
CMD5
tD6(2)
WRT WRT WRT WRT WRT DATA DATA DATA
CMD4 CMD3 CMD2 CMD1 CMD0 217B 216B 215B
Latch Data
(Internal)
Previous Data
Latest Data (All GS Data are 0001h)
BLANK Bit in Data Latch
(Internal)
EXTGCK Bit in Data Latch
(Internal)
OUTTMG Bit in Data Latch
(Internal)
SDTO
WRT
CMD5
SCKO
tD0
WRT WRT
CMD4 CMD3
tD1
DATA
217A
DATA
216A
tW(SCKO)
1
0
1
0
1
0
DATA
1A
DATA
0A
tR0/tF0
WRT
CMD5
WRT WRT WRT WRT WRT DATA DATA
CMD4 CMD3 CMD2 CMD1 CMD0 217B 216B
DATA
215B
OFF
OUTR0-R3
ON
OFF
OUTG0-G3
ON
OFF
OUTB0-B3
ON
(VOUTXnH)
(VOUTXnL)(1)
(VOUTXnH)
(VOUTXnL)(1)
(VOUTXnH)
(VOUTXnL)(1)
tF1
tR1
tD3
tD4
tD5
(1) OUTXn ON-OFF timing depends on previous GS data in the 218-bit data latch.
(2) The propagation delay time shows the period from the rising edge of the last SCKI, not the 224th SCKI to the internal
latch signal generation.
Figure 3. Data Write and OUTXn Switching Timing (OUTTMG = 1)
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