saa5547ps NXP Semiconductors, saa5547ps Datasheet - Page 42

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

Philips Semiconductors
18 DISPLAY
The display section is based on the requirements for US
Closed Caption. There are some enhancements for use
with locally generated On-Screen Displays.
The display section reads the contents of the Display
memory and interprets the control/character codes. From
this information and other global settings, the display
produces the required RGB signals and video/data (Fast
Blanking) signal for a TV signal processing device.
The display is synchronised to the TV signal processing
device by way of horizontal and vertical sync signals
provided by external circuits (Slave Sync mode). From
these signals all display timings are derived.
18.1
2000 Feb 23
handbook, full pagewidth
Teletext style OSD and Enhanced OSD modes
US Closed Caption features
Serial and Parallel display attributes
Single/double/quadruple width and height for characters
Scrolling of display region
Variable flash rate controlled by software
TV microcontrollers with Closed Captioning (CC)
and On-Screen Display (OSD)
Display features
CLOCK RECOVERY
TTC
output data to SFRs
DATA SLICER
ACQUISITION
Fig.15 Data Capture block diagram.
CC/WSS
ADC
AND
FOR
data < 7:0 >
TTD
CVBS0
SWITCH
CVBS
CVBS
42
CVBS1
Globally selectable scan lines per row 9, 10, 13 or 16
Globally selectable character matrix (H
12
Italics
Soft colours using CLUT with 4096 colour palette
Underline
Overline
Fringing (shadow) selectable from N-S-E-W direction
Fringe colour selectable
Meshing of defined area
Contrast reduction of defined area
Cursor
Special Graphics characters with two planes, allowing
four colours per character
32 software redefinable On-Screen Display characters
4 WST character sets (G0/G2) in single device
(e.g. Latin, Cyrillic, Greek, Arabic)
G1 Mosaic graphics, Limited G3 Line drawing
characters
WST character sets and Closed (including extended)
Caption character set in a single device.
ACQUISITION
SEPARATOR
GSA010
TIMING
SYNC
10, 12
VCS
13 or 12
SYNC_FILTER
16
Preliminary specification
SAA55xx
V) 12
9,