1 Acronyms and related documents
Acronyms
FMC FPGA Mezzanine Card
FPGA Field-Programmable Gate Array
JTAG Joint Test Action Group
LED Light Emitting Diode
LVDS Low Voltage Differential Signaling
MGT Multi-Gigabit Transceiver
MSB Most Significant Bit(s)
PCB Printed Circuit Board
PCI Peripheral Component Interconnect
PCIe PCI Express
1.2 Related Documents•PCI Express Card Electromechanical Specification Revision 2.0•PCI Express 225W/300W High Power Card Electromechanical Specification Revision 1.01.3 Requirements and handling instructions•The PCIE490 must be equipped with boards compliant to the PCI Express CardElectromechanical Specification Revision 2.0•Observe ESD precautions when handling the board to prevent electrostaticdischarges.•The PCIE490 is delivered with a Type F (Schuko) to IEC power cord.
2 Product Overview
The PCIE490 is a PCI Express (PCIe) expansion enclosure containing 8 x16 PCIe slots(4lanes connected per slot). The PCIE490 incorporates a PCIe expansion card which allows for a 16-lane cable PCIe connection to a HOST computer. On the host computer side, a x16 PCIe slot is required to plug the receiving PCIe expansion host card. The PCIE490 is specially designed to operate multiple FPGA-based PCI Express boards like the Abaco PC820 and PC821 boards. This system has the advantage of offering better control over cooling of the system, easy rack mounting of the system, and separating FPGA and digitizer hardware from the HOST computer hardware. It can also be used to house other PCIe devices such as GPUs for high-performance computing, storage adapters, or networking equipment.
The following figure illustrates the PCIE490 system architecture.
2.1 Chassis Description
The PCIE490 is a 4U high 19-inch wide chassis offering 8 PCIe x16 expansion slots. Each expansion slot has a 4-lane PCI Express Generation 2 connection to the local PCIe switch. The chassis is equipped with fans located in the rear of the chassis for air cooling.
The fans suck air into the chassis from the rear panel. The system has a total of 10 front panel slots that can be used for front panel IO from cards plugged into the PCIE490. The slots are numbered from 0 to 9, and Figure 2 and Figure 3show their respective locations.
Slot 0 does not have a PCIe expansion slot associated with it; it is only used in case the card plugged into slot 1 requires additional front panel IO. This is the case if a PC821 card is plugged into slot 1, for example. Slot 9 typically holds the 16-lane PCI Express expansion cable adapter card.
Slots 1 through 8 are the PCI Express expansion slots that can carry a PCI Express-compliant card. Slots 1, 3, 5, and 7 are able to support cards that consume up to 75 Watts; the other slots are designed to support cards that consume up to 30 Watts.
2.2 PCIe host card and
The standard configuration incorporates a 3-meter-long x16 PCIe expansion cable with an x16 PCIe host card. The PCIe x16 host card has to be installed in the host computer system. The 16-lane expansion cable is then connected between the two x16 PCIe host cards.
2.3 System overview
3 Electrical specifications
Input power is 100-240VAC and is supplied through the IEC60320 C14 connector on the rear of the chassis. The power supply is rated for 750W. The following table shows the power supply specifications.
The system can hold a maximum of 4 PC821 boards. Adhere to the following requirements when plugging a PC821 into the system:
-Place a PC821 only in slot 1,3,5 or 7
-Always connect the auxiliary power connector to the PC821
The system can hold a maximum of 8 PC820 boards. The PC820 can be plugged into all slots and requires the auxiliary power connector to be connected when fitted into slot 2, 4, 6, or 8
4 Maintenance
Dust buildup should be removed from the grates covering the fans on the backside of the chassis on a monthly basis.
