Magnum PF21GB300 Service Manual page 13

·Only one reference (12 MHz) crystal required for the -Controller, Teletext- and the colour decoder
·Multi-standard colour decoder with automatic search system
·Internal base-band delay line
·Indication of the Signal-to-Noise ratio of the incoming CVBS signal
·A linear RGB/YUV/YPBPR input with fast blanking for external RGB/YUV sources. The synchronisation
circuit can be connected to the incoming Y signal. The Text/OSD signals are internally supplied from the
-Controller/Teletext decoder.
·RGB control circuit with 'Continuous Cathode Calibration', white point and black level off-set adjustment so
that the colour temperature of the dark and the light parts of the screen can be chosen independently.
·2 levels of contrast reduction of main picture possible during OSD/Text insertion ('halftone')
·OSD/Text gain reduction control
·Adjustable 'wide blanking' of the RGB outputs
·Horizontal synchronization with two control loops and alignment-free horizontal oscillator
·Vertical count-down circuit
·Vertical driver optimized for DC-coupled vertical output stages
·Horizontal and vertical geometry processing
·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 TDA111XX 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
·80C51μ-controller core standard instruction set and timing
·0.9766 μs machine cycle
·maximum of 64 k x 8-bit late programmed ROM
·maximum of 3 k x 8-bit Auxiliary RAM (2 k required for Display)
·I2C byte level bus interface.
·Interrupt controller for individual enable/disable with two level priority
·Two 16-bit Timer/Counter registers
·One 24-bit Timer (16-bit timer with 8-bit Pre-scaler)
·16-bit Data pointer
·WatchDog timer
·Auxiliary RAM page pointer
·Stand-by, Idle and Power Down modes
·Up to 13 general-purpose I/O pins
·14 bits PWM for Voltage Synthesis Tuning
·8-bit A/D converter with 4 multiplexed inputs
·4 PWM (6-bits) outputs for analogue control functions
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