Impactv Ntsc/Pal Encoder - Intel AN430TX - Motherboard - ATX Technical Product Specification

The motherboard provides two inputs for video on the video riser card I/O panel: an RCA input
connector for composite video signals, and a 7-pin mini-DIN connector for S-Video signals and
Inter-Integrated Circuit (I
The Bt829A's registers are accessed using the I
device. To reprogram the default settings, you must connect an I
2
I C/S-Video connector. The I
a rate of 100 Kbits/sec.
1.9.3.1 Video Capture Input Connector
A 1x4 pin connector is available on the motherboard for applying a composite video signal (from a
TV Tuner add-in card, for example) to the input of the Brooktree Bt829A Video Capture device.
Two pins are dedicated to external control capability via the I
and serial data (SDA) pins.
1.9.3.2 Video Capture Drivers and Utilities
Video capture software and utilities are available from Intel's World Wide Web site (see
Section 5.2).

1.9.4 ImpacTV NTSC/PAL Encoder

The optional ATI-ImpacTV NTSC/PAL Encoder is an ASIC that provides a TV-out interface for
the ATI-264GTB 3D Rage II+ multimedia graphics accelerators. Quality issues such as image
flicker, illegible text and low-definition graphics are controlled through on-chip circuitry for
scaling, flicker removal, and artifact suppression. Features include:
Circuitry for producing interlaced images with flicker removed
Circuitry for eliminating dot crawl
Filters for bringing out detail in fine text while suppressing color artifacts
Support for both NTSC and PAL formats
Filters that ensure signal bandwidth does not exceed TV standards
Fully programmable timing that enables NTSC or PAL signals to be generated from monitor
resolutions that include 320x200, 320x240, 320x350, 320x400, 360x200, 360x240, 360x400,
360x440, 512x384, 640x350, 640x400, 640x480, 720x350, 720x400, 720x480, and 800x600
Simultaneous display of images on both a TV and a PC monitor
Independent horizontal positioning of the TV image and the PC monitor image
Independent vertical positioning of the TV image and the PC monitor image
Independent horizontal scaling of the TV image and the PC monitor image
Power management for full VESA DPMS and EPA Energy Star compliance
Automatic power down of the ASIC at initialization if a TV is not detected
Support for both composite and S-Video connectors
The motherboard provides two outputs for video on the video riser card I/O panel: an RCA
connector for composite video-out signals and a 4-pin mini-DIN connector for S-Video output
signals.
2
C) signals.
2
C interface. The Bt829A operates as an I
2
C serial clock and data lines transfer data from the master device at
Motherboard Description
2
C master to the 7-pin mini-DIN
2
C protocol using serial clock (SCL)
2
C slave
21