Video Encoder; Data Interfaces; Matrox Mga G400 - Matrox Orion Installation And Hardware Reference

40 Chapter 5: Matrox Orion hardware reference

Video encoder

In the display section, an NTSC/PAL video encoder provides an
additional video output with overlay from Matrox Orion to
external video devices (for example, VCRs). The video encoder
can output either component RGB video or both composite and
Y/C (NTSC/PAL) video in either square pixel or CCIR 601
resolutions. Note that composite and Y/C video is outputted
simultaneously.
Note that if the input is operating in square pixels, then the
output must operate in the same resolution and vice versa.

Data interfaces

Matrox MGA G400

Matrox MGA-G400 controls the Host interface. It uses the
32-Mbyte frame buffer to store data when transferring data to
the display, and also stores grabbed data in the frame buffer
until the AGP or PCI bus becomes available.
Matrox MGA-G400 transfers the data at high transfer speeds
in one direction at a time across the AGP or PCI bus. For
example, Matrox Orion can grab into a Host buffer for
processing, and then transfer the resulting data to the display.