STV6889 ,HIGH-END I2C CONTROLLED DEFLECTION PROCESSOR FOR MULTISYNC MONITORFEATURES • Compensation of horizontal breathing with EHT 2variation, I C-bus gain adjustmentGeneral ..
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STV6889
HIGH-END I2C CONTROLLED DEFLECTION PROCESSOR FOR MULTISYNC MONITOR
May 2004 1/56
Version 1.1
STV6889HIGH-END I²C CONTROLLED DEFLECTION PROCESSORFOR MULTISYNC MONITOR
PRODUCT PREVIEW
FEATURES
General Advanced I2 C-bus controlled deflection processor dedicated for high-end CRT monitors Single supply voltage 12V Very low jitter DC/DC converter controller Advanced EW drive Advanced asymmetry corrections Automatic multistandard synchronization Vertical dynamic correction waveform output X-ray protection and Soft-start & stop on horizontal and DC/DC drive outputs2 C-bus status register
Horizontal section 150 kHz maximum frequency Corrections of geometric asymmetry: Pin cushion asymmetry, Parallelogram, separate Top/Bottom corner asymmetry Tracking of asymmetry corrections with vertical size and position Fully integrated horizontal moiré cancellation
Vertical section 200 Hz maximum frequency Vertical ramp for DC-coupled output stage with adjustments of: C-correction, S-correction for super-flat CRT, Vertical size, Vertical position Vertical size and position prescales for factory adjustment Vertical moiré cancellation through vertical ramp waveform Compensation of vertical breathing with EHT variation; I2 C-bus gain adjustment
EW section Symmetrical geometry corrections: Pin cushion, Keystone, Top/Bottom corners separately, S- and W-corrections Horizontal size adjustment Tracking of EW waveform with Vertical size and position, horizontal size and frequency Compensation of horizontal breathing with EHT variation, I2 C-bus gain adjustment
Dynamic correction section Generates vertical waveform for dynamic corrections like focus, brightness uniformity, ... 1 output with vertical dynamic correction waveform, both polarities, tracking with vertical size and position
DC/DC controller section Step-up and step-down conversion modes External sawtooth configuration2 C-bus-controlled output voltage Synchronized on hor. frequency with phase selection Selectable polarity of drive signal Protection at H unlock condition
DESCRIPTIONThe STV6889 is a monolithic integrated circuit as-sembled in a 32-pin shrink dual-in-line plasticpackage. This IC controls all the functions relatedto horizontal and vertical deflection in multimodeor multi-frequency computer display monitors.
Combined with other ST components dedicatedfor CRT monitors (microcontroller, video preampli-fier, video amplifier, OSD controller), the STV6889allows fully I2 C bus-controlled computer displaymonitors to be built with a reduced number of ex-ternal components.
