DA

Register

Contents

Notes

0 to 7

State

Function

7

—

0

Second byte identification bit

6

LNB3

0

1

5

LNB2

0

1

4

LNB1

0

1

3

LNB0

0

1

2

LPB2

0

1

1

LPB1

0

1

0

LPB0

0

1

No. 5731-18/23

LC74788, 74788M, 74788JM

COMMAND9 (Display control setup command)

• First byte

DA

Register

Contents

Notes

0 to 7

State

Function

7

—

1

6

—

1

Command 9 identification code.

5

—

1

Display control setup.

4

—

1

3

—

1

Extended command 2 identification code

2

—

0

1

LNBSEL

0

Normal line background color operation

1

RV characters have the background color specified by PH* or the RV

character background color is white.

0

MOD2

0

The LNBSEL: 1 setting specifications

1

RV characters have the background color specified by PH*, characters

are white.

Switches the RV mode background color for the line

specified by LNB* for characters specified for RV

display.

Valid when LNBSEL is high

Specifies the line whose background is to be

changed.

(If the same line is specified to have different

background colors with LNA*, LNB*, and LNC*, then

the setting specified by the last command issued will

be valid. The previously specified registers (LN* and

LP*) will all be reset to 0.)

Specifies the background color

• Second byte

Note: All registers are set to 0 when the LC74788/M/JM is reset by the RST pin.

LNB3

LNB2

LNB1

LNB0

Specified line

0

0

0

0

Do not change the line background

0

0

0

1

Line 1

0

0

1

0

Line 2

0

0

1

1

Line 3

0

1

0

0

Line 4

0

1

0

1

Line 5

0

1

1

0

Line 6

0

1

1

1

Line 7

1

0

0

0

Line 8

1

0

0

1

Line 9

1

0

1

0

Line 10

1

0

1

1

Line 11

1

1

—

—

Line 12

LPB2

LPB1

LPB0

Line 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

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