TLC5910

LED DRIVER

SLLS392 – NOVEMBER 1999

3

POST OFFICE BOX 655303

functional block diagram

DCENA

IREF

XDOWN2TST

TSENA

WDTRG

WDCAP

BLANK

XRST

MAG

t0–2u, GSPOL,

GSCLK, RBIAS,

VCOIN, PDOUT

DCDIN

t0–5u,

XDCLAT,

DCCLK

RSEL

t0–1u

DIN

t0–9u,

XLATCH

XENABLE

DCLK

DPOL

BCENA

XOE

LEDCHK

TSD

16 bit

LED Driver+LOD

16 x 10 bit

Data Shift Register

16 x 10 bit

Data Latch

16 x 10 bit

Data Comparator

16 x 6 bit

D.C. Data Latch

16 bit

Current Controller

16 x 6 bit

D.C. Data Shift Register

8

DCLK

Control

DCDOUT

t0–5u

PLL

WDT

DOUT

t0–9u

10 bit

Clock Countor

..........

..........

..........

..........

..........

..........

1 x 10 bit B.C.

Data Shift Register

Data Latch

XPOUT

XGSOUT

XDOWN1

XDOWN2

OUT0

OUT15

· · ·

BOUT

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

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

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