ST92185B STMicroelectronics, ST92185B Datasheet - Page 101

• Manufacturer Part Number: ST92185B
• Description: 16k/24k/32k Rom Hcmos Mcu With On-screen-display
• Manufacturer: STMicroelectronics

ON SCREEN DISPLAY (Cont’d)
7.4.4.3 Parallel Attributes
Figure 61. Example of Row in Parallel Mode
Each character is defined on 2 bytes in Parallel
Mode (see
Parallel Mode is selected by setting the SPM bit in
the DCM1R register R251 (FBh) Page 32.
It requires 2 bytes per character. Display charac-
ters are coded through a second byte processed in
parallel with the character code.
It does not handle Teletext and is used mainly for
TV menus (e.g. for channel searching or volume
control).
The attribute can be one of two types defined by
most significant bit (PS):
– Color attribute
– Shape attribute
US: Underline / Separate Mosaic graphics (see
above).
DH: Double Height: The half character is displayed
in the current row depending on the Upper Height
Attributes Location
Characters Location
Display
Figure
A
A
13.)
A
A
global
Default background
Default foreground
A * *
A * *
Z
Z
A
Foreground (full intensity)
Background (half intensity)
A R D O Z
R
D
control bit. The Double Height action is not propa-
gated in the row.
Note: When a parallel double height attribute is
decoded in Row 23, the characters of the first sta-
tus row are not affected and are still displayed.
UH: Upper Half. This bit is active when the current-
ly displayed row writes the upper half-character in
case of double height or double size attribute.
DW: Double Width (see above).
BX: Boxing window.
SR: Smooth Rounding.
FR, FG, FB: Foreground color.
BR, BG, BB: Background color.
HI: Half Intensity (background only).
CSS: Character extended menu code selection.
PS: Parallel attribute selection
ST92185B - ON SCREEN DISPLAY (OSD)
O
Propagation
Z
*
*
A A
A A
A
A
VR02115D
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