Data interfaces 35
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
The VIA's PCI interface is 32 bits wide and operates at 33 MHz. It allows all VIA
resources to be accessed through a 128-Mbyte memory region, mappable
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.
VMChannel
Matrox Meteor-II /Camera Link provides a 32-bit non-bus controller
VMChannel interface for a secondary or additional high-speed connection
bet we en o n- bo a rd an d e xt e rn al d ev ic es . On a b ac k pl an e s y st em , it ru ns a t 3 3 MHz
for 132 Mbytes/sec peak transfer rates. Note the VMChannel is only available on
the PCI form factor only.