saa5547ps NXP Semiconductors, saa5547ps Datasheet - Page 45

• Manufacturer Part Number: saa5547ps
• Description: Saa550x; Saa554x Tv Microcontrollers With Closed Captioning Cc And On-screen Display Osd
• Manufacturer: NXP Semiconductors

Philips Semiconductors
18.3.3
The size of the characters can be modified in both the
horizontal and vertical directions.
CC: Two sizes are available in both the horizontal and
vertical directions. The sizes available are normal ( 1),
double ( 2) height/width and any combination of these.
The attribute setting is always valid for the whole row.
Mixing of sizes within a row is not possible.
TXT: Three horizontal sizes are available normal ( 1),
double ( 2) and quadruple ( 4). The control characters
‘normal size’ (0CH/BCH) enables normal size, the ‘double
width’ or ‘double size’ (0EH/BEH/0FH/BFH) enables
double width characters.
Any two consecutive combination of ‘double width’ or
‘double size’ (0EH/BEH/0FH/BFH) activates quadruple
width characters, provided quadruple width characters are
enabled by TXT4.QUAD WIDTH ENABLE.
2000 Feb 23
handbook, full pagewidth
TV microcontrollers with Closed Captioning (CC)
and On-Screen Display (OSD)
S
10
11
12
13
14
15
0
1
2
3
4
5
6
7
8
9
IZE
0
2
Field 1
Field 2
4
12
6
16 character matrix
8 10 0 2 4 6 8 10
0 2 4 6 8 10 0 2 4 6 8 10
12
Fig.17 Italic characters.
13 character matrix
45
Three vertical sizes are available normal ( 1), double ( 2)
and quadruple ( 4). The control characters ‘normal size’
(0CH/BCH) enable normal size, the ‘double height’ or
‘double size’ (0DH/BDH/0FH/BFH) enable double height
characters. Quadruple height characters are achieved by
using double height characters and setting the global
attributes TXT7.DOUBLE HEIGHT (expand) and
TXT7.BOTTOM/TOP.
If double height characters are used in Teletext mode,
single height characters in the lower row of the double
height character are automatically disabled.
18.3.4
CC: This attribute is valid from the time set until the end of
the row or otherwise modified. The attribute causes the
character foreground pixels to be offset horizontally by
1 pixel per 4 scan lines (interlaced mode). The base is the
bottom left character matrix pixel. The pattern of the
character is indented as shown in Fig.17.
TXT: The Italic attribute is not available.
0 2 4 6 8 10 0 2 4 6 8 10
I
TALIC
12
10 character matrix
Preliminary specification
indented by 7/6/4
indented by 6/5/3
indented by 5/4/2
indented by 4/3/1
indented by 3/2/0
indented by 2/1
indented by 1/0
indented by 0
SAA55xx
MBK970