TDA9550 PHILIPS [NXP Semiconductors], TDA9550 Datasheet - Page 53
TDA9550
Manufacturer Part Number
TDA9550
Description
TV signal processor-Teletext decoder with embedded m-Controller
Manufacturer
PHILIPS [NXP Semiconductors]
Datasheet
1.TDA9550.pdf
(125 pages)
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Philips Semiconductors
Display Positioning
The display consists of the Screen Colour covering the
whole screen and the Text Area that is placed within the
visible screen area. The screen colour extends over a
large vertical and horizontal range so that no offset is
needed. The text area is offset in both directions relative to
the vertical and horizontal sync pulses.
2000 Jun 22
Soft Scroll Position
Pointer SSP<3:0> e.g. 6
Soft Scroll Height
TV signal processor-Teletext decoder with
embedded -Controller
SSH<3:0> e.g.4
ROW
13
10
11
12
14
15
1
2
3
4
5
6
7
8
9
0
Closed Captioning data row n
row1
Closed Captioning data row n+1
row5
row2
row3
row4
row6
row7
row8
row13
row14
row0
Closed Captioning data row n+2
Closed Captioning data row n+3
Fig.22 Soft Scroll Area
Closed Captioning data row n+4
Fig.23 CC Text Areas
ROW
13
10
12
14
15
11
1
2
8
9
0
3
4
5
6
7
Usable for OSD Display
Usable for OSD Display
Should not be used for
Should not be used for
P01 NBC
OSD Display
OSD Display
Soft Scrolling Area
SPS<3:0> e.g. 11
Stop Scroll Row
Start Scroll Row
STS<3:0> e.g. 3
Scroll Area
Offset
Visible area
for scrolling
0-63 lines
53
S
This area is covered by the screen colour. The screen
colour display area starts with a fixed offset of 8 us from
the leading edge of the horizontal sync pulse in the
horizontal direction. A vertical offset is not necessary.
Table 22 Screen Colour Display Area
T
The text area can be defined to start with an offset in both
the horizontal and vertical direction.
Table 23 Text Display Area
The horizontal offset is set in REG2: Text Area Start. The
offset is done in full width characters using TAS<5:0> and
quarter characters using HOP<1:0> for fine setting. The
H-Sync delay
0.25 char. offset
EXT
CREEN
Horizontal
Vertical
Horizontal
Vertical
D
ISPLAY
Horizontal Sync.
C
TDA955X/6X/8X PS/N1 series
OLOUR
Screen Colour Offset = 8 s
Fig.24 Display Area Positioning
A
starts 8 us after the leading edge of H-Sync for 56
us.
line 9, field 1 (321, field 2) with respect to leading
edge of vertical sync (line numbering using 625
Standard).
Up to 48 full sized characters per row.
Start position setting from 3 to 64 characters from
the leading edge of H-Sync. Fine adjustment in
quarter characters.
256 lines (nominal 41- 297).
Start position setting from leading edge of vertical
sync legal values are 4 to 64 lines.
(line numbering using 625 Standard)
REA
Text Area Start
D
ISPLAY
Screen Colour Area
Text Area End
A
Text Area
REA
Tentative Device Specification
56 s
Text
Vertical
Offset
6 Lines
Offset
Vertical
Sync.
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