PCIBPCMCX2

PCIBPMCX2 (PCI Bus Compatible) Bridge based PCI and PMC Compatible Adapter Carrier

Embedded applications frequently require real time processing coupled with special purpose IO. With PCIBPMCX2´s two slots; a PrPMC can be matched with another PMC to make a high bandwidth processing node. The PrPMC can communicate with the host for set-up, and then use the local bus to control and transfer data with the special purpose IO card. For example the PMC-BiSerial-VI-HW1 provides 32 channels of Manchester encoded IO, and when matched with a PrPMC can control or monitor a large system in real time.

When the carrier is reset the bridge acts as a tranparent connection from the host PCI bus to the PMC(s) installed. The PMC(s) can be completely controlled with the standard driver software for those modules. With additional software the bridge can be programmed to create a local address space where the interaction between the PMCs is hidden from the system. The bridge is acting in a non-transparent mode in this case.

To support your situation; the interrupts are switch programmable to be cross connected or interact with the host computer. The PMC IO module can interrupt the PrPMC if your system is configured for local processing. Both positions can be bus masters allowing for DMA and single word transfers on the PCI bus.

PCIBPMCX2 (PCI Bridge PMC 2 slots) adapter/carrier converter card provides the ability to install one or two PMC cards into a standard PCI slot. The universal voltage PCI card is suitable for PCI operation with 32 bit data and 33 or 66 MHz clock. The PCB is free of components in the area in front of Pn1 to allow for cards with XMC connectors to be installed.

PMC user IO connector Pn4 from Position 0 [rear] is brought to one of two connectors for access (DIN [VME] or SCSI ) The bezel IO for position 0 is internal to the chassis. Position 1 [front] has options for the Pn4 IO to be connected to a DIN or SCSI connector and the bezel IO is available at the PCIBPMCX2 bezel [pass through]. Please see the ordering options below.

For superior performance PCIBPMCX2 has cooling cutouts for increased airflow to the PMCs. If your application requires a fan you can order the -FAN option to have fans mounted to your PCIBPMCX2. The FAN positions are numbered 1-3 with 1 closest to the PCI Bezel [left edge in the picture above]. The fans are specially modified to work with our carriers. The resulting "zero slot fan"™ assembly is mounted [positions 2 and/or 3] under the PMC and PCI maximum height requirements. Please refer to the Fan dissussion near the ordering section for more information.

The PCI bus is interconnected to the PMC via a 32 bit 66 MHz capable bridge. The bridge allows the PCI bus to operate with different parameters than the PMC cards - for example the PCI bus can operate at 66 MHz and the PMC with 33 MHz. The buffering within the bridge will take care of the rate and data matching. The local side can also operate at 66 or 33 MHz depending on the PMCs installed. The PCIBPMCX2 can control the M66EN signal via a dipswitch setting, or the PMC can control the M66EN setting directly.

The voltage definitions are buffered between the PCI and PMC buses. The PCI VIO automatically defines the reference levels for the primary side of the bridge. A user selection is used on the secondary side. The voltages can be the same or different between the primary and secondary sides of the bridge. A 5V PMC card can be used with a 3.3V PCI bus and vice-versa.

The bridge insures that multiple PCIBPMCX2 cards can be installed onto the same PCI bus stub. The PCB routing between the PCI gold finger connector and the Bridge is done to meet or exceed the PCI specifications. In particular the trace lengths, loading, impedance, and proximity to planes and plane splits are carefully implemented and checked.

Power is properly filtered at the edge connector, the PMC connectors plus bulk to handle variations in power draw. The bridge has bipass at each power connection and additional bulk capacitance to insure proper operation. Planes are used to distribute power to the end points.

The individual pins on the Jn4 (Pn4) connectors for each position are accessible by either a 68 pin SCSI connector or a 64 position DIN connector. We recommend using our SCSI cable and the HDEterm68 breakout block with the SCSI connector. The industry standard VME [DIN] IDC connector is easy to connect to your system using DINterm64 which is a 64 position terminal strip and the DIN Ribbon Cable 64, a 64 position ribbon cable.

The PMC JTAG connections are routed to headers useable with Xilinx and other manufacturers. Please let us know if you want these headers installed.