Data Transfer - Matrox Meteor-II /Digital Installation And Hardware Reference

10 Chapter 1: Introduction
Acquisition features
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Matrox Meteor-II /Digital can acquire digital video from
cameras using the RS-422 or LVDS differential signed format.
It supports image acquisition from genlocked cameras in
4 x 8-bit, 2 x 16-bit, or 1 x 32-bit configurations; therefore, up
to four cameras can be attached to acquire four 8-bit images or
one component RGB image. The board also supports multi-tap
configurations (up to four taps). In addition, Matrox Meteor-II
/Digital accepts an external trigger, and can operate in either
asynchronous reset mode or next valid frame/field mode.

Data transfer

The Matrox Meteor-II /Digital board allows the transfer of live
video to Host memory or off-board display memory. To prevent
loss of data during long bus-access latencies found in heavily
loaded computer systems, Matrox Meteor-II /Digital for PCI
form factor features 4 Mbytes of video transfer memory for
temporary frame storage, whereas Matrox Meteor-II /Digital
for PC/104-Plus includes 16 Mbytes of video transfer memory.
The board is also equipped with the Matrox Video Interface
ASIC (VIA), which acts as a video-to-PCI bridge.
The Matrox Meteor-II /Digital for PCI also has a VMChannel
interface (non-bus controller), which is used to send data to
other VM devices found on other Matrox Imaging boards (for
example, Matrox Genesis main board or Matrox Genesis
1
processor board) .
1. Since the Matrox Meteor-II boards cannot perform the
function of bus controller, they must be connected with
at least one board which is bus controller capable; oth-
erwise, VMChannel transfers will not work.