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90 Chapter 4: Matrox Solios hardware reference

PCIe/PCI/PCI-X interface

Matrox Solios uses PCI-X technology to communicate on-board. PCI-X is a

high-performance backwards-compatible enhancement to the conventional PCI

bus specification. To communicate with the Host, Matrox Solios XCL and XA

can transfer data using either the Host’s PCI or PCI-X bus, depending on the slot

used by the board. Matrox Solios eCL and eA can transfer data using the Host’s

PCIe bus.

On Matrox Solios XCL and XA, a standard PCI-X to PCI-X bridge handles the

PCI/PCI-X connection. On Matrox Solios eCL and eA, a PCI-X to PCIe bridge

handles the PCIe connection.

Using the Host PCIe/PCI/PCI-X bus, Matrox Solios can copy data between its

acquisition memory, the Host, and any other memory mapped onto the

PCIe/PCI/PCI-X bus. The PCIe/PCI/PCI-X bus connects all Matrox Solios

components to the Host, and to peripherals such as a display board.

Under optimum conditions, Matrox Solios can exchange data with the Host at a

peak transfer rate of up to 1 Gbyte/sec. For Matrox Solios eCL and eA, these

conditions include using the board in a x4 or x8 PCIe slot with at least 4 active

lanes. For Matrox Solios eCL-B and eA Single, these conditions include using the

board in a x1 PCIe slot. For Matrox Solios XCL and XA, these conditions include

using the board in a 133 MHz PCI-X slot. If Matrox Solios XCL and XA are used

with a conventional 3.3 or 5V PCI slot, the maximum transfer rate is reduced

(132 Mbytes/sec for a 32-bit PCI slot, 266 Mbytes/sec for a 66 MHz 32-bit PCI

slot, and 532 Mbytes/sec for a 66 MHz 64-bit PCI slot).

Using the PCIe/PCI/PCI-X bus, Matrox Solios can also access Host physically

contiguous, non-paged memory. An advantage of this memory is that a bus

mastering device (such as Matrox Solios) can access this memory without the help

of the Host CPU.

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