akira CT-14CQS5CPT, Service Manual

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Model no.:CT-21CQS5CPT.doc
version 1.0
26
·Horizontal and vertical zoom function for 16: 9 applications
·Horizontal parallelogram and bow correction for large screen picture tubes
·Low-power start-up of the horizontal drive circuit
·Macrovision keying possibility for horizontal synchronisation.
Available in TDA935X/6X/8X PS versions
·A choice can be made between versions with mono intercarrier sound FM demodulator and
versions with QSS IF amplifier.
·Source selection between the ‘internal’ CVBS and an external CVBS or Y/C signal
Controller
·80C5 1 -controller core standard instruction set and timing
·1 s machine cycle
·32 - 128Kx8-bit late programmed ROM
·3 - 12Kx8-bit Auxiliary RAM (shared with Display)
·Interrupt controller for individual enable/disable with two level priority
·Two 16-bit Timer/Counter registers
·One 16-bit Timer with 8-bit P re-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
·4 multiplexed inputs for the A/D converter and 5 PWM (6-bits) outputs for control of TV
analogue signals (TDA95XX series)
·4 pins which can be programmed as general I/O pin, ADC input or PWM (6-bit) output
(TDA93XX series)
Data Capture
•
Text memory for 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
•
Rea
l-time capture and decoding for WST Teletext in Hardware, to enable optimized
processor throughput
•
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