ST92185B datasheet(95/178 Pages) STMICROELECTRONICS

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ST92185B - ON SCREEN DISPLAY (OSD)

ON SCREEN DISPLAY (Cont’d)

Table 16. Global Attributes (Cont’d)

Global Attributes

Description

Control

Box Control ModeText In/

Out

Text In/ Text Out Box configurable with 3 bits. Refer to FSCCR register de-

scription for details.

FSCCR

R243 (F3h)

Page 32

Vertical Adjustment

Refer to the register description for bit settings. Active on the whole page,

this setting adjusts the vertical delay between the rising edge of Vsync and

the beginning of the display area. The display color in this delay adjustment

area is defined by the Full Screen color.

VPOSR

R242 (F2h)

Page 32

Horizontal Adjustment

Refer to the register description for bit settings. Active on the whole page,

this adjustment is the horizontal delay between the rising edge of Hsync

and the beginning of the display area. The display in this delay area is the

full row color.

Two kinds of horizontal adjustment are available. When the tube is in a 4/3

format, only a horizontal delay is necessary before starting the active dis-

play area. When the tube is in 16/9 format, an additional horizontal adjust-

ment is necessary to keep the display area centered on the screen.

HPOSR

R241 (F1h)

Page 32

National Character Subset

Selection

Refer to the register description for bit settings. Chooses which national font

sub-set is to be used with the G0 character set.

NCSR R245

(F5h) Page

Single G0 or Triple G0 mode

selection

0 = Single G0 character set mode (default)

1 = Triple G0 character set mode

In applications with multiple alphabets in the same display, it is possible to

switch from one character set to another on the fly (see serial attributes).

NCSR

Global Double Height

Active on the whole page with header, but not on the status rows. When

Global Double Height is active, either the top half or the bottom half of the

screen is visible.

SCLR

R248 (F8h)

and SCHR

R249 (F9h)

Page 32

Background default color

This color is displayed as background color if no serial or parallel attributes

are defined for the displayed row.

DCR R240

(F0h) Page

Foreground default color

This color is displayed as foreground color if no serial or parallel attributes

are defined for the displayed row. These default colors are selected at each

beginning of a line and are defined by means of the corresponding register.

DCR

Full screen color

Color displayed outside of the vertical display area.

FSCCR

R243 (F3h)

Page 32

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