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| TLC5951 Datasheet, PDF (14/46 Pages) Texas Instruments – 24-Channel, 12-Bit PWM LED Driver with 7-Bit Dot Correction and 3-Group, 8-Bit Global Brightness Control | |||
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TLC5951
SBVS127B â MARCH 2009 â REVISED DECEMBER 2009
TIMING DIAGRAMS (continued)
www.ti.com
GSSIN
GSSCK
GSLAT
XBLNK
GSCKR
(GSCKG)
(GSCKB)
Grayscale Data Latch
(Internal)
Dot Correction/
Brightness Control Function
Control Data Latch (Internal)
Common Shift Register
Bit 0 (Internal)
Common Shift Register
Bit 1 (Internal)
GSR0
0A
TSU0
NO NO NO
VAL71 VAL70 VAL69
TH0
NO NO
VAL68 VAL67
DCR0
3B
fCLK (SCLK)
DCR0
2B
DCR0 DCR0
1B
0B
TWH0 TH1
NO NO NO NO
NO NO NO NO
NO
VAL71 VAL70 VAL69 VAL68 VAL67 VAL66 VAL65 VAL64 VAL63
TSU2
12345
285 286 287 288
TWL0
TWL1
1234 56789
TH2
TSU1
Shift Register Data Are Transferred
to DC/BC/FC/UD Data Latch
fCLK (GSCKR/G/B)
TWL2
DCR0
NO NO
NO NO
NO
0A
VAL71 VAL70 VAL69 VAL68 VAL67
DCR0
1A
DCR0 NO
NO
NO
NO
0A VAL71 VAL70 VAL69 VAL68
Previous Data
DCR0 DCR0 DCR0
3B
2B
1B
DCR0
0B
DCR0 DCR0 DCR0
4B
3B
2B
DCR0
1B
Latest Data
NO NO NO NO NO NO NO NO
VAL71 VAL70 VAL69 VAL68 VAL67 VAL66 VAL65 VAL64
DCR0 NO NO NO NO NO NO NO
0B VAL71 VAL70 VAL69 VAL68 VAL67 VAL66 VAL65
Common Shift Register
Bit 286 (Internal)
GSSOUT
OUTR0, OUTR4 OFF
(OUTG0, OUTG4) ON
(OUTB0, OUTB4)
OUTR1, OUTR5 OFF
(OUTG1, OUTG5) ON
(OUTB1, OUTB5)
OUTR2, OUTR6 OFF
(OUTG2, OUTG6) ON
(OUTB2, OUTB6)
OUTR3, OUTR7 OFF
(OUTG3, OUTG7) ON
(OUTB3, OUTB7)
NO
NO NO NO NO NO
VAL70 VAL69 VAL68 VAL67 VAL66 VAL65
NO
VAL71
tD0
NO NO
NO
NO
NO
VAL70 VAL69 VAL68 VAL67 VAL66
(VOUTRnH)
tR0/tF0
(VOUTRnL)
tD3
tD4
tD5
tD6
DCR0 DCR0 NO
NO
1A
0A VAL71 VAL70
NO
NO
NO NO
NO
NO
NO
NO
VAL69 VAL68 VAL67 VAL66 VAL65 VAL64 VAL63 VAL62
DCR0 DCR0 DCR0 NO
2A
1A
0A VAL71
NO
NO
NO
NO
NO
NO NO
NO
VAL70 VAL69 VAL68 VAL67 VAL66 VAL65 VAL64 VAL63
SID Data Are Not Transferred to
288-Bit Common Shift Register
tD2
ON
ON
ON
ON
tD8, tD9
Figure 11. Dot Correction/Global Brightness Control/Function Control/User-Defined
Data Write Timing from GS Data Path
14
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Product Folder Link(s): TLC5951
Copyright © 2009, Texas Instruments Incorporated
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