No. 5731-14/23

LC74788, 74788M, 74788JM

COMMAND5 (Display control setup command)

• First byte

DA

Register

Contents

Notes

0 to 7

State

Function

7

—

1

6

—

1

Command 5 identification code

5

—

0

Display control setup

4

—

1

3

NP1

0

1

2

NP0

0

1

1

NON

0

Interlaced

1

Noninterlaced

0

INT

0

External synchronization

1

Internal synchronization

Switches between the NTSC, PAL, PAL-N, PAL-M,

NTSC 4.43, and PAL60 formats.

Switches between external and internal

synchronization

Switches between interlaced and noninterlaced

video.

NP2

NP1

NP0

Format

0

0

0

NTSC

0

0

1

PAL-M

0

1

0

PAL

0

1

1

PAL-N

1

0

0

NTSC4.43

1

0

1

PAL60

• Second byte

DA

Register

Contents

Notes

0 to 7

State

Function

7

—

0

Second byte identification bit

6

NP2

0

Set with NP0 and NP1.

1

5

HLFINT

0

Normal mode

1

Half internal synchronization mode

4

BCL

0

Background color on

Only valid in internal synchronization mode.

1

No background color (Only the background level is set)

3

CB

0

Color burst signal output.

Only valid when BCL is high.

1

Color burst signal output stopped.

2

PH2

0

1

1

PH1

0

1

0

PH0

0

1

Note: All registers are set to 0 when the LC74786/M/JM is reset by the RST pin.

Background color specification

PH2

PH1

PH0

Background color (phase)

0

0

0

Cyan

0

0

1

Yellow

0

1

0

Red

0

1

1

Blue

1

0

0

Cyan blue

1

0

1

Green

1

1

0

Orange

1

1

1

Magenta