MB90091A データシートの表示（PDF） - Fujitsu

部品番号

コンポーネント説明

メーカー

MB90091A

Intelligent on-screen display controller (IOSDC)

Fujitsu 

MB90091A

2. Command 1 (Set Character Color)

• Command format

MSB

First byte

1

0

0

0

1

MSB

Second byte 0

BG BR BB CI

AT BS

CG CR

LSB

BI

LSB

CB

AT

: Specify character qualification display.

(Specify display of a character background, blinking, inverted shading.)

BS

: Specify shaded background display.

B1 to BB : Set a character background color.

C1 to CB : Set a character color.

• Function

Command 1 sets the character color and character background color and specifies character qualification

display and shaded background display.

• Description

The character color, character background color, character qualification display, and shaded background dis-

play can be set/specified for each character. Character background display, blinking, and inverted shading

can be used for characters for which character qualification display is specified.

These settings are written to VRAM and applied to the display screen the moment command 2 (Set Character

Code) is issued.

AT: Specify character qualification display.

(Specify display of a character background, blinking, inverted shading.)

AT = 0: Normal display (without character qualification)

This setting suppresses character background display, blinking, and inverted shading in shaded

background display.

The output level at the VOB2 pin becomes “L“.

AT = 1: Character qualification display

This setting enables character background display, blinking, and inverted shading in shaded back-

ground display.

“H“ level output is enabled at the VOB2 pin.

Setting the command 5 (Screen Control 1) ATR bit to “1“ specifies character background display.

Setting the ATB bit for command 5 (Screen Control 1) to “1“ specifies blinking.

Setting both the ATK and BS bits for command 5 (Screen Control 1) to “1“ specifies inverted

shading.

Setting the command 6 (Screen Control 2) ATH bit to “1“ sets the output level at the VOB2 pin to “H“.

BS: Specify shaded background display.

BS = 0: Normal display (without shaded background display)

BS = 1: Shaded background display

Setting both the ATK and AT bits for command 5 (Screen Control 1) to “1“ specifies inverted

shading.

C1, CG, CR, CB: Set the character color.

B1, BG, BR, BB: Set the background color.

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