UPD6461GS Просмотр технического описания (PDF) - NEC => Renesas Technology

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UPD6461GS

CMOS LSI CHIP FOR CAMCORDER ON-SCREEN CHARACTER DISPLAY (12 ROWS × 24 COLUMNS)

NEC => Renesas Technology 

µPD6461, 6462

1.2 HOW TO SELECT MASK OPTIONS

To select mask options, use the option setting command (OC) of the Character Pattern Editor, a tool designed for editing

character pattern data.

Activate the Character Pattern Editor, then display the following setting menu:

OC (COMMAND INPUT)

OPTION DATA (0---LSB FAST , 1---MSB FAST ) :

OPTION DATA (0---V:9H

, 1---V:3H

):

OPTION DATA (0---RGB+3BLK , 1---RGB+VC1+VC2 ) :

OPTION DATA (0---OUTPUT 20 , 1---OUTPUT 21 ) :

OPTION DATA (0---OUTPUT 10 , 1---OUTPUT 11 ) :

OPTION DATA (0---EXT CLK , 1---LC

):

OPTION DATA (0---LC

, 1---EXT CLK ) :

......... (1)

......... (2)

......... (3)

......... (4)

......... (5)

......... (6)

......... (7)

Actually, the above menu is displayed one line at a time. Once you have selected an option, the next line is displayed.

Select 0 or 1 for lines (1), (2), (3), (6), and (7), according to the setting to be made. For the dot clock, however, make

the same settings (different values) for lines (6) and (7). For example, when selecting LC oscillation, select “LC” for both

lines (1 for (6) and 0 for (7)). Don’t select external clock input for lines (6) and/or (7).

When selecting the output distribution format, select the values on lines (4) and (5) as follows:

(4)

(5)

Option A 1(OUTPUT 21) 0(OUTPUT 10)

Option B 0(OUTPUT 20) 0(OUTPUT 10)

Option C 1(OUTPUT 21) 1(OUTPUT 11)

The settings are valid only when RGB+VC1+VC2 mode has been selected. Select option A (1, 0) when RGB+3BLK mode

has been selected.

The following table lists the correspondence between the command bits and the lines of the setting menu. Specify 0

or 1 for each bit.

D7 D6 D5 D4 D3 D2 D1 D0

0 (1) (2) (3) (4) (5) (6) (7)

Command OD displays the result of the selection, as a hexadecimal number.

Example: When the mask options are selected as follows:

Mask option

MSB first

Specification in three-line units

RGB+3BLK

Option A (only option A can be

specified in RGB+3BLK mode)

LC oscillation

Bit

Command

D6

1

D5

1

D4

0

D3

1

D2

0

D1

1

D0

0

The command bits are set as follows:

D7 D6 D5 D4 D3 D2 D1 D0

0

1

1

0

1

0

1

0

→Command OD displays 6AH.

9

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