TLC5911

LED DRIVER

SLLS402 – DECEMBER 1999

3

POST OFFICE BOX 655303

functional block diagram

DCENA

IREF

XDOWN2TST

TSENA

WDTRG

WDCAP

BLANK

MAG(2–0), GSPOL,

GSCLK, RBIAS,

VCOIN, PDOUT

DCDIN(6–0),

XDCLAT,

DCCLK

RSEL(1–0)

DIN(9–0),

XLATCH

XENABLE

DCLK

DPOL

BCENA

XOE

LEDCHK

TSD

16 bit

LED Driver+LOD

16 x 10 bit

Data Latch

16 x 10 bit

Data Comparator

16 x 7 bit

D.C. Data Latch

16 bit

Current Controller

16 x 7 bit

D.C. Data Shift Register

8

DCLK

Control

DCDOUT(6–0)

PLL

WDT

DOUT(9–0)

10 bit

Clock Countor

..........

..........

..........

..........

..........

..........

1 x 10 bit B.C.

Data Shift Register

Data Latch

XPOUT

XGSOUT

XDOWN1

XDOWN2

OUT0

OUT15

· · ·

BOUT

Legend:

B.C. (Brightness Control): Adjustment for brightness deviation between LED modules, and between panels.

D.C. (Dot Control): Adjustment for brightness deviation between dots.

XDPOUT

16 x 10 bit

Data Shift Register

NOTE: All the input terminals are with Schmitt triggered inverter except RBIAS, VCOIN, PDOUT, IREF and WDCAP.