Pci Interface; Vmchannel - Matrox Meteor-II /Standard Installation And Hardware Reference

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38 Chapter 4: Hardware reference

PCI interface

Matrox Meteor-II has a 32-bit PCI bus interface, capable of a peak transfer rate

of 132 Mbytes/sec.

The VIA's PCI interface is 32 bits wide and operates at 33 MHz. It allows all VIA

The VIA's PCI

resources to be accessed through a 128-Mbyte memory region, mappable

interface

anywhere in the 4-Gbyte PCI address space.

In addition, the PCI interface supports various plane and pixel transfer modes by

using some of the VMChannel logic. Consequently, VMChannel and PCI

transfers cannot be performed simultaneously.

Read pre-fetch and write posting buffers are integrated to optimize Host access.

Matrox Meteor-II provides a 32-bit non-bus controller VMChannel interface for

a secondary or additional high-speed connection between on-board and external

devices. On a backplane system, the VMChannel runs at 33 MHz for

132 Mbytes/sec peak transfer rates.

The VMChannel is only available on the PCI form factor of

Matrox Meteor-II/Standard.

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