TDA9550 datasheet(3/125 Pages) PHILIPS

3 / 125 page

2000 Jun 22

Philips Semiconductors

Tentative Device Speciﬁcation

TV signal processor-Teletext decoder with

embedded

µ-Controller

TDA955X/6X/8X PS/N1 series

µ-Controller

• 80C51 µ-controller core standard instruction set and

timing

• 1 µs machine cycle

• 32 - 128Kx8-bit late programmed ROM

• 3 - 12Kx8-bit Auxiliary RAM (shared with Display and

Acquisition)

• Interrupt controller for individual enable/disable with two

level priority

• Two 16-bit Timer/Counter registers

• One 16 bit Timer with 8-bit Pre-scaler

• WatchDog timer

• Auxiliary RAM page pointer

• 16-bit Data pointer

• Stand-by, Idle and Power Down (PD) mode

• 14 bits PWM for Voltage Synthesis Tuning

• 8-bit A/D converter

• 4 pins which can be programmed as general I/O pin,

ADC input or PWM (6-bit) output

Data Capture

• Text memory for 0, 1 or 10 pages

• In the 10 page versions inventory of transmitted Teletext

pages stored in the Transmitted Page Table (TPT) and

Subtitle Page Table (SPT)

• Data Capture for US Closed Caption

• Data Capture for 525/625 line WST, VPS (PDC system

A) and Wide Screen Signalling (WSS) bit decoding

• Automatic selection between 525 WST/625 WST

• Automatic selection between 625 WST/VPS on line 16

of VBI

• Real-time capture and decoding for WST Teletext in

Hardware, to enable optimized

µ-processor throughput

• Automatic detection of FASTEXT transmission

• Real-time packet 26 engine in Hardware for processing

accented, G2 and G3 characters

• Signal quality detector for video and WST/VPS data

types

• Comprehensive teletext language coverage

• Full Field and Vertical Blanking Interval (VBI) data

capture of WST data

Display

• Teletext and Enhanced OSD modes

• Features of level 1.5 WST and US Close Caption

• Serial and Parallel Display Attributes

• Single/Double/Quadruple Width and Height for

characters

• Scrolling of display region

• Variable flash rate controlled by software

• Enhanced display features including overlining,

underlining and italics

• Soft colours using CLUT with 4096 colour palette

• Globally selectable scan lines per row (9/10/13/16) and

character matrix [12x10, 12x13, 12x16 (VxH)]

• 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 Caption Character set

in single device

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