SAA5531 Philips Semiconductors, SAA5531 Datasheet - Page 58

• Manufacturer Part Number: SAA5531
• Description: Enhanced TV microcontrollers with On-Screen Display OSD
• Manufacturer: Philips Semiconductors

Philips Semiconductors
19.2
The display section has two distinct modes with different
features available in each. The two modes are:
In both of the above modes the Character matrix, and
TV lines per row can be defined. There is an option of
9, 10, 13 and 16 TV lines per display row, and a Character
matrix (H
Table 16 Display features
2000 Feb 23
Flash
Boxes
Horizontal size
Vertical size
Italic
Foreground colours
Background colours
Soft colours (CLUT)
Underline
Overline
Fringe
Fringe colour
Meshing of background
Fast Blanking Polarity
Screen colour
DRCS
Character matrix (H
Number of rows
Number of columns
Number of characters displayable
Cursor
Special graphics (2 planes per character)
Scroll
TXT: This is the display configured as the WST mode
with additional serial and global attributes. The display is
configured as a fixed 25 rows with 40 characters per
row.
CC: This is the display configured as the US Closed
Caption mode. The display is configured as a maximum
of 16 rows with a maximum of 48 characters per row.
Enhanced TV microcontrollers with
On-Screen Display (OSD)
Display modes
V) of 12
FEATURE
9, 12
V)
10, 12
13, or 12
serial
Txt/OSD (serial)
x1, x2 or x4 (serial)
x1 or x2 (serial); x4 (global)
n/a
8 (serial)
8 (serial)
16 from 4096
n/a
n/a
N + S + E + W
16 (global)
black or colour (global)
yes
16 (global)
32 (global)
12
25
40
1000
yes
16
no
16.
9, 12
10, 12
58
TXT
Not all combinations of TV lines per row and maximum
display rows give a sensible OSD display, since there is a
limited number of TV scan lines available.
Special Function Register TXT21 and memory mapped
registers are used to control the mode selection.
Throughout the section the features will be described and
their function in each of the modes given. If the feature is
different in either mode then this is stated.
19.2.1
Table 16 shows a list of features available in each mode,
and also if the setting is a serial/parallel attribute, or has a
global effect on all the display.
13 or 12
F
EATURES AVAILABLE IN EACH MODE
16
yes
yes
serial
serial
x1 or x2 (serial)
x1 or x2 (serial)
serial
8 + 8 (parallel)
16 (serial)
16 from 4096
serial
serial
N + S + E + W
16 (serial)
all (global)
yes
16 (global)
32 (global)
12
16
48
768
16
9, 12
Preliminary specification
10, 12
CC
SAA55xx
13 or 12
16