Second byte

Register content

DA0 to DA7

Register name

State

Function

Note

7—

0

Second byte identification code

6

HALF

0

Normal mode

INT

1

Half internal synchronous mode

5

P14OUT

0

Halftone output

Selects P14 (3.58/4.43) output.

SEL

1

High output in internal synchronous mode

4

SECAM

0

In SECAM mode, only the character frame area is on.

Selects the CVCR “on” period.

SEL

1

In SECAM mode, the entire character display area is on.

3

IOS

0

Sets the mode setting pin to be an input pin.

Switches the input/output direction of

1

Sets the mode setting pin to be an output pin.

the mode setting pins.

2

BCOL1

0

Determines whether a background color

1

is displayed. (Only valid in internal

1

BCOL0

0

synchronization mode.)

1

0

CBOFF

0

Outputs a color burst signal.

Only valid when either BCOL0 is 1 or

1

Stops the output of color burst signals.

BCOL1 is 1.

Note: When the chip is reset by the RST pin, the register states (bits) are all cleared to 0.

⑧ COMMAND70: Display Control Setting Command 4

First byte

Register content

DA0 to DA7

Register name

State

Function

Note

7—

1

6—

1

The command 7 identification code:

5—

1

sets display control parameters.

4—

1

3—

0

Expansion command 0 identification code

2—

0

1—

0

0

LINS

0

Selects the lower 6 bits (bits 0 to 5)

Selects the upper or lower six bits when

1

Selects the upper 6 bits (bits 6 to B)

halftone output line mode is specified.

Second byte

Register content

DA0 to DA7

Register name

State

Function

Note

7—

0

Second byte identification code

6

VCO

0

VCO frequency is 14.12 MHz

Selects VCO oscillation frequency.

SELECT1

1

VCO frequency is 7.07 MHz

5

LIN5

0

Turns off (low) sixth line halftone output.

Used for the line 12 setting when LINS

1

Turns on (high) sixth line halftone output.

is high.

4

LIN4

0

Turns off (low) fifth line halftone output.

Used for the line 11 setting when LINS

1

Turns on (high) fifth line halftone output.

is high.

3

LIN3

0

Turns off (low) fourth line halftone output.

Used for the line 10 setting when LINS

1

Turns on (high) fourth line halftone output.

is high.

2

LIN2

0

Turns off (low) third line halftone output.

Used for the line 9 setting when LINS is

1

Turns on (high) third line halftone output.

high.

1

LIN1

0

Turns off (low) second line halftone output.

Used for the line 8 setting when LINS is

1

Turns on (high) second line halftone output.

high.

0

LIN0

0

Turns off (low) first line halftone output.

Used for the line 7 setting when LINS is

1Turns on (high) first line halftone output.

high.

Note: When the chip is reset by the RST pin, the register states (bits) are all cleared to 0.

LC74763, LC74763M

No. 5039-13/21

BCOL1

BCOL0

Background color

00

Background color displayed

01

No background color (about 13 IRE)

10

No background color (about 23 IRE)

11