PCA84C646P PHILIPS [NXP Semiconductors], PCA84C646P Datasheet - Page 40
PCA84C646P
Manufacturer Part Number
PCA84C646P
Description
Microcontrollers for TV tuning control and OSD applications
Manufacturer
PHILIPS [NXP Semiconductors]
Datasheet
1.PCA84C646P.pdf
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Philips Semiconductors
12.4.1
Mode 0 No background mode. Both the Space Code and
Mode 1 North-west shadowing mode. Similar to Mode 0.
Mode 2 Box shadowing mode. The Space Code is
1995 Jun 15
handbook, full pagewidth
Microcontrollers for TV tuning
control and OSD applications
S
DIFFERENT BACKGROUND
the Carriage Return Code are displayed as
transparent (no bit) patterns, with the video signal
as the background.
displayed as a transparent pattern with selected
background colour. This will also be the
background colour of the character following the
Space Code. However, when the Space Code is
used as an end bit, it will be displayed as a
transparent pattern superimposed on the video.
The Carriage Return Code in Mode 2 is also
displayed as a transparent pattern superimposed
on the video signal.
PACE
Fig.31 SP and CR codes in Mode 0: No background mode (superimpose; transparent pattern).
C
ODE AND
C
ARRIAGE
/
Red colour
Blue colour
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
SHADOWING MODES
0 1 2 3 4 5 6 7 8 910 11 0 1 2 3 4 5 6 7 8 910 11
R
ETURN
C
ODE IN
SP code
40
0 1 2 3 4 5 6 7 8 910 11 0 1 2 3 4 5 6 7 8 910 11
Mode 3 Frame shadowing mode. The Space Code and
Space Code and Carriage Return Code in the 4 different
background/shadowing modes (0 to 3), with:
Figure 39 shows blinking of a character only within the
12
character crosses over the boundary of the cell of the
character next to the one that is not blinking, the shadow
dot will still appear on the screen regardless whether the
blinking character is ON or OFF.
Blinking OFF are shown in Figs 31, 32, 33 and 34.
Blinking ON are shown in Figs 36, 37, 38 and 39.
18 cell boundary. If the shadow of the blinking
Carriage Return code is displayed as a
transparent pattern with background colour;
see Table 39.
CR code
PCA84C646; PCA84C846
MED227
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