LC74725 View Datasheet(PDF) - SANYO -> Panasonic

Part Name

Description

Manufacturer

LC74725

On-Screen Display Controller LSI

SANYO -> Panasonic 

LC74725, 74725M

z COMMAND2 (Vertical display start position and vertical character size setup command)

First byte

DA0 to DA7

7

6

5

4

3

2

1

0

Register name

—

—

—

—

—

VS20

—

VS10

State

1

0

1

0

0

0

1

0

0

1

Register content

Function

Command 2 identification code

Set the vertical display start position and vertical character size.

1H per dot

2H per dot

1H per dot

2H per dot

Note

Second line vertical character size

First line vertical character size

Second byte

DA0 to DA7

7

6

Register name

—

FS

5

VP5

(MSB)

4

VP4

3

VP3

2

VP2

1

VP1

0

VP0

(LSB)

State

0

0

1

0

1

0

1

0

1

0

1

0

1

0

1

Register content

Function

Second byte identification bit

Crystal oscillator frequency: 2fsc

Crystal oscillator frequency: 4fsc

If VS is the vertical display start position then:

5

VS = H × (2Σ 2nVPn)

n=0

H: the horizontal synchronization pulse period

Note

The vertical display start position is set

by the 6 bits VP0 to VP5.

The weight of bit 1 is 2H.

{ COMMAND3 (Horizontal display start position and horizontal character size setup command)

First byte

DA0 to DA7

7

6

5

4

3

2

1

0

Register name

—

—

—

—

EGP

HS20

—

HS10

State

1

0

1

1

0

1

0

1

0

0

1

Register content

Function

Command 3 identification code

Set the horizontal display start position and horizontal

character size.

Correction: off

Correction: on

1 Tc per dot

2 Tc per dot

1 Tc per dot

2 Tc per dot

Note

Border specification when the horizontal

double character size is used

Second line horizontal character size

First line horizontal character size

No. 5213-10/16

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