TLC5910 Datasheet, PDF (28/30 Pages) Texas Instruments – LED DRIVER

XLATCH
BLANK
tsu (XLATCH–GSCLK)
GSPOL
GSCLK
1/fWDT
WDTRG
twl (WDTRG)
twh (WDTRG)
td (BLANK–OUT0)
OUT0
OFF
OUT1
td (OUTn+1–OUTn)
tsu (BLANK–GSCLK)
td (BLANK–OUT0)
1/fGSCLK
twl (GSCLK)
twh (GSCLK)
OFF
td (GSCLK–OUT0)
td (GSCLK–OUT0)
ON(Note A)
OFF
(Note A)
ON(Note A)
td (OUTn+1–OUTn)
OFF
(Note A)
twdt
OFF (Note A)
OFF
(Note A)
OUT15
XDOWN1
OFF
ON(Note A)
OFF
(Note A)
OFF ^{(Note A)}
NOTE A: ON or OFF, or ON time is varied depend on the gray scale data and BLANK.
HI–Z
XDOWN2
BOUT
XGSOUT
LEDCHK
td (GSCLK–XDOWN2)
td (BLANK–BOUT)
td (GSCLK–XGSOUT)
td (LEDCHK–XDOWN2)
(Note B)
(Note B)
NOTE B: When LED is disconnected.
(Note B)
td (LEDCHK–XDOWN2)
GSPOL, GSCLK and XGSOUT can be replaced with signals inverted with each other.
Figure 16. Timing Diagram (Constant Current Output) – MAG0 to MAG2 are all zero