UPD16449 Просмотр технического описания (PDF) - NEC => Renesas Technology

Номер в каталоге

Компоненты Описание

производитель

UPD16449

SOURCE DRIVER FOR 240-OUTPUT TFT-LCD (NAVIGATION, AUTOMOBILE LCD-TV)

NEC => Renesas Technology 

µPD16449

5. FUNCTIONAL DISCRIPTION

5.1 Multiplexer Circuit

This circuit selects RGB video signals input to the C1 to C3 pins according to the pixel array of the liquid crystal

panel, and outputs the signals to the H1 through H240 pins.

Vertical stripe array, single-/double-side delta array, or mosaic array can be selected by using the MP/TH and

MP/1.5 pins.

5.1.1 Vertical stripe array mode (MP/TH = L, MP/1.5 = L)

In this mode, the relation between video signals C1 to C3, and output pins is as shown below. This mode is used to

drive a panel of vertical stripe array. In this mode, the multiplexer circuit is in the through status.

Table 5−1. Relation between Video Signals C1 to C3, and Output Pins (during right shift)

Line No.

RESET

INH

H1 (H240)

(number of INHn)

Sampling

0

H

L

C1 (C3)

Output

1

L

↓

C1 (C3)

Output

2

L

↓

C1 (C3)

Output

3

L

↓

C1 (C3)

:

:

:

:

Remark ( ) indicates the case of left shift.

H2 (H239)

Sampling

C2 (C2)

Output

C2 (C2)

Output

C2 (C2)

Output

C2 (C2)

:

H3 (H238)

Sampling

C3 (C1)

Output

C3 (C1)

Output

C3 (C1)

Output

C3 (C1)

:

H4 (H237) ... H239 (H2) H240 (H1)

Sampling

C1 (C3)

Output

C1 (C3)

Output

C1 (C3)

Output

C1 (C3)

:

... Sampling

C2 (C2)

... Output

C2 (C2)

... Output

C2 (C2)

... Output

C2 (C2)

...

:

Sampling

C3 (C1)

Output

C3 (C1)

Output

C3 (C1)

Output

C3 (C1)

:

Figure 5−1. Pixel Arrangement of Vertical Stripe Array and Multiplexer Operation

R C1

B C2 µPD16449

G C3

H1

H2

Right shift (R,/L = "H"), MP/TH = "L", MP/1.5 = "L"

H3

H4

H5

H6

H7

R

B

G

R

B

G

R

R

B

G

R

B

G

R

R

B

G

R

B

G

R

R

B

G

R

B

G

R

R

B

G

R

B

G

R

8

Data Sheet S15677EJ1V0DS

Share Link: