MN89201 Datasheet, PDF (1/11 Pages) Panasonic Semiconductor – VGA-NTSC Scan Converter

For Information Equipment
MN89201
VGA-NTSC Scan Converter
Overview
The MN89201 converts PC/AT VGA (640 × 480) display
data into an NTSC video signal without requiring an external
frame memory. It uses filtering to eliminate flicker and
produce a high-quality television image.
Note: PC/AT and VGA are registered trademarks of International
Business Machines Corporation.
Features
Conversion of PC/AT VGA (640 × 480) display data
into NTSC video signal
• 8-bit inputs for VGA R, G, and B signals
Horizontal frequency: 31.5 kHz
Vertical frequency: 59.94 Hz
• Conversion of non-interlaced display to interlaced
display
• Built-in phase-locked loop for synchronizing VGA
and NTSC data clocks
• Conversion from RGB to YCrCb (4:2:2) format
• Data output in NTSC display format (YCrCb24 or
YCrCb16-bit)
Flicker prevention
• Choice of line filters with 3 taps for preventing
flicker
Processing with only line memory
• No need for external VRAM
• All processing completes within built-in line memory
Applications
Point-of-sale terminals, Factory automation terminals,
word processors, and other terminals
Choice of readout clocks for NTSC output
Choice 1: Choice of clock that has arbitrary
frequency and synchronizes with
VGA clock
External voltage-controlled
oscillator in addition to built-in
phase-locked loop
Choice 2: Choice of clock that has arbitrary
frequency and does not synchronize
with VGA clock
External oscillator
Choice 3: Clock with half frequency of the
VGA-dot-clock
Choose the clock matching the NTSC encoder.
The MN89201 offers high-quality NTSC-compatible
output from a compact configuration.