Obsolete Product(s) - Obsolete Product(s)
STMicroelectronics Confidential
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AN1290
Main Characteristics of the TDA9112 Deflection Processor Family
1
Main Characteristics of the TDA9112 Deflection
Processor Family
Control
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Control of all functions and status reading through I²C interface (status reading is not available
with the TDA9115).
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I²C settings take effect during the Vertical Oscillator Retrace for an improved screen aspect.
These parameters can be sent at any moment.
Horizontal
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Dual PLL structure
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Maximum frequency of 150 kHz
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Self-adaptable frequency range from 1 to 4.5 or more
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Improved jitter control functions
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X-ray protection with digital filtering
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Lock/Unlock output; data also available on I²C bus (except for the TDA9115)
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ON/OFF Output function for Power Management
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I²C control of duty cycle, H-position and H-amplitude values with frequency tracking if required
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Smooth frequency transitions
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Internal soft-start
Vertical
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Constant amplitude, self-adaptive vertical ramp generator
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50 to 185 Hz frequency range
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ON/OFF Output function for Power Management
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I²C control of V-amplitude, V-position, S- and C-correction amplitudes
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S-correction adapted to normal or super-flat tubes
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Lock/Unlock data by I²C (except for the TDA9115)
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Signal for early V Blanking.
East/West Pincushion Correction and Advanced Geometry Corrections
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Pincushion Parabola generator, with DC coupling possible for H-Size control
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I²C control of Pincushion, H-amplitude, Keystone and Corner corrections
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Corner correction, top and bottom independent, symmetric and asymmetric
— No symmetric corner correction for the TDA9115; no asymmetric corner correction for the
TDA9113, the TDA9115 and the TDA9116
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H and V compensations of EHV variations (breathing inputs)
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Auto-tracking of all the corrections above with H-frequency (if required) and H-amplitude
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I²C control of parallelogram and side-pin balance correction
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Auto-tracking of all geometry corrections with V-amplitude and V-position
