JUNE, 2000, VERSION 1.2
1
COPYRIGHT
©
© 1999, 2000 FOCUS ENHANCEMENTS, INC.
PRELIMINARY INFORM ATION
FS450, FS451
i-Net TV Interface
Video Processor
Features
• Flexible clock, data, and electrical interfaces
allows glue-less digital interface to Intel
82810, National Geode and most other
graphic controller chips ("GCC")
• Capable of operating as clock master,
pseudo-master, and slave and supports both
single and differential master clocks
• Programmable 2D scaling †
–
Variable horizontal up and down scale
–
Variable vertical downscale
–
Output format can be tuned to the exact
dimensions of the TV
• Advanced 2-D flicker filter †
• Supports Multiple Progressive Input
Resolutions
–
640x480 to 1024x768
• Multiple Output Standards
–
NTSC, NTSC-EIAJ, PAL-B/D/G/H/I/M/N
–
Composite, S-Video, RGB SCART
–
Composite Y-Notch and C-Bandpass
Filters
• Genlock the GCC and incoming Video
–
Provides the pixel clock to the GCC
generated from a single 27MHz clock
–
Provides frame synchronization output
signal for other video components
• CCIR 656 outputs
• CCIR 656 input to the encoder
• 10-bit output D/A converters
• Macrovision 7 compliant (FS451 only)
• I2C‡ compatible port controls
• High level programming interface
• 100 pin PQFP package
• 3.3V operation
†Note: Covered under US Patent # 5,862,268 and/or
patents pending.
‡Note: I2C is a registered trademark of Philips Corporation.
The FS450 SIO bus is similar but not identical to Philips I
2C
bus.
Description
The i-Net TV FS450 is a fourth generation video
scan converter. It accepts many input
resolutions, rates and formats and converts them
to NTSC or PAL standards compliant with
SMPTE-170M and CCIR-656 standards. The chip
has a programmable down scaler to fit the
incoming resolution to the output display format.
The CCIR 656 ports allow external interface to
other video chips. The sync control block
generates frame reset for genlocking other video
components. Required external components are
minimal: a single 27 MHz oscillator or crystal
and passive parts.
Digital progressive RGB inputs are downscaled or
upscaled to the CCIR-656 horizontal pixel count
and converted to the 656 format. Vertical scaling
and flicker filtering are done in 656 format.
The Flicker Filter is an advanced 2 dimensional
filter that enhances text quality. Flicker Filter and
Sharpness parameters are programmable.
A digital video encoder that generates analog Y/C
and Composite Video outputs is part of the
FS450. For the composite output in NTSC, Y-
Notch and C-Bandpass filters are available. For
RGB and YUV outputs, the encoder may be
bypassed via a YUV to RGB transcoder for
SCART compatible video.
Scaling and clock parameters are automatically
programmed by the driver, so the system remains
genlocked with resolution changes. The input
parameters to the automatic scaling are TV
viewable area, PAL or NTSC, and the GCC CRT
Control Registers’ settings.
The FS451's encoder incorporates Macrovision 7
anti-copy protection technology.
All parameters can be read and written via the I
2C
compatible serial port.
Power is derived from +3.3V digital and analog
supplies. The package is 100-lead Quad Flat
Pack (PQFP).
Applications
• Internet Set Top Boxes
• PC video out (TV Ready PCs)
• Cable/DVD Player Set Top Boxes
• Web Appliances
• Information Appliances
• Video Kiosks
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