Beko D5 Service Manual page 15

µ-Controller
• 80C51 µ-controller core standard instruction
set andtiming
• 1 µs machine cycle
• 64 - 96Kx8-bit late programmed ROM
• 12Kx8-bit DataRAM (shared between
Display,Acquisition and Auxiliary RAM)
• Interrupt controller for individual
enable/disable with twolevel 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 modes
• 14 bits PWM for Voltage Synthesis Tuning
• 8-bit A/D converter with 4 multiplexed inputs
• 5 PWM (6-bits) outputs for control of TV
analogue signals
• 18 general I/O ports
Data Capture
• Text memory for 10 pages
• 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)
datacapture 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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