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4. Circuit Description
Scaler: M-star TSUM66AJ
GENERAL DESCRIPTION
The TSUM66AJ is total solution graphics processing IC for LCD monitors with panel resolutions
up to SXGA. It is
configured with a high-speed integrated triple-ADC/PLL, an integrated DVI receiver, a high
quality display
processing engine, and an integrated output display interface that can support LVDS panel
interface format.
To further reduce system costs, the TSUM66AJ also integrates intelligent power management
control capability
for green-mode requirements and spread-spectrum support for EMI management.
The TSUM66AJ incorporates the world’s first coherent oversampled RGB graphics ADC in a
monitor controller
1
system . The oversampling ADC samples the input RGB signals at a frequency that is much
higher than the
signal source pixel rate. This can preserve details in the video signal that ordinarily would be
lost due to input
signal jitter or bandwidth limitations in non-oversampled systems.
2
The TSUM66AJ also incorporates a new Dynamic Frame Rate (DFR) generator for the digital
output video to
the display panel that preserves the advantages of a fixed output clock rate, while eliminating the
output end of
frame short-line.
BLOCK DIAGRAM
ViewSonic Corporation
Confidential - Do Not Copy
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