TDA9550 PHILIPS [NXP Semiconductors], TDA9550 Datasheet - Page 48
TDA9550
Manufacturer Part Number
TDA9550
Description
TV signal processor-Teletext decoder with embedded m-Controller
Manufacturer
PHILIPS [NXP Semiconductors]
Datasheet
1.TDA9550.pdf
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Philips Semiconductors
Character and Attribute Coding
CC M
Character coding is split into character oriented attributes (parallel) and character group coding (serial). The serial
attributes take effect either at the position of the attribute (Set At), or at the following location (Set After) and remain
effective until either modified by a new serial attribute or until the end of the row. A serial attribute is represented as a
space (the space character itself however is not used for this purpose), the attributes that are still active, e.g. overline
and underline will be visible during the display of the space. The default setting at the start of a row is:
The coding is done in 12 bit words. The codes are stored sequentially in the display memory. A maximum of 768
character positions can be defined for a single display.
P
Table 17 Parallel Character Coding
2000 Jun 22
ARALLEL
1x size, flash and italics OFF
overline and underline OFF
Display mode = superimpose
fringing OFF
background colour duration = 0
end of row = 0
TV signal processor-Teletext decoder with
embedded -Controller
ODE
Bits
0-7
8-10
11
C
HARACTER
Description
8 bit character code
3 bits for 8 foreground colours
Mode bit:
0 = Parallel code
C
ODING
48
TDA955X/6X/8X PS/N1 series
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