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KPXI-CON-900-01 Rev. A / January 2007
Appendix C: PCI-to-PXI, PXI-to-PXI Extension User’s Guide
KPXI System Controller User’s Manual
Introduction
The Keithley Instruments PCI to PXI or PXI to PXI extension modules function as a transparent
PCI-PCI bridge register set. With coupling master and slave extension modules, users will have
direct control of PXI/CompactPCI chassis from another PC or multi-chassis PXI/CompactPCI
systems. All devices on this system appear as local devices in a single PCI system. One master
extension card (KPXI-CON-PXIREM or KPXI-CON-PCIREM) can expand up to 2 slave extension
modules (KPXI-CON-PXIREM) at the same time.
Keithley Instruments extension modules employ the StarFabric architecture, a well-known physical
layer technology, with a serial interconnection at 622Mbps low voltage differential signaling
(LVDS). Four transmit and receive differential pairs are used to provide 2.5Gbps full duplex link
bandwidth. Using shielding twisted pair copper cable can extend the transmission distance to 10m.
The PCI interface supports 64-bit or 32-bit PCI buses operating at 66MHz or 33MHz. A bundled
link can support the full bandwidth of 64-bit/66MHz PCI bus.
All interrupts asserted by add-in cards in the extension system are passed through the extension
set to the host system. These Keithley Instruments extension modules are built in a transparent
architecture, and function independently of the operating system. A PCI-to-PCI bridge function in
the system extension set provides 100% capability with PCI drivers, application software, BIOS,
operating systems, configuration codes, etc. Users can combine PCI, CompactPCI, and PXI
devices in the same system, increase the available number of PXI/CompactPCI slots for high
density I/O applications, and could separate the control system from the harsh environment with
the extension chassis.
Features
Keithley Instruments extension cards have the following advanced features:
• Direct PC control of PXI/CompactPCI systems
• Multi-chassis configurations for PXI/CompactPCI
• Up to 2 PCI segments from signal KPXI-CON-PCIREM
• PCI local bus specifications Rev. 2.2 compliant
• PCI to PCI bridge architecture specifications Rev. 1.1 compliant
• PXI specifications Rev. 2.0 compliant
• Up to 64-bit, 66MHz PCI bus extension
• StarFabric link performance
• 528Mbytes/s peak (64-bit, 66MHz PCI)
• 132Mbytes/s peak (32-bit, 33MHz PCI)
• Shielded copper cabling
• 10m maximum distance
• Completely hardware and software transparent
• Independent of operating systems
• Seamless PCI interrupt extension
Applications
• High Density I/O System
• Test System in Harsh Environment
• Electronic Manufacturing Test System
• Automation System with Existed PC
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