Spring 2006 Vol. 15 No. 1   


Product Focus: Model 6826

The Model 6826 6U VME/VXS board features single- or dual-channel data acquisition at two gigasamples per second with 10-bit resolution using the new Atmel AT84AS008 A/Ds. It includes a high-performance Virtex II-Pro FPGA for signal processing and delivers digital output samples over FPDP connectors utilizing FPDP or FPDP II standards. The 6826 digitizes signal bandwidths to nearly 900 MHz for applications such as wideband radar and communication signals.

Model 6826 Block Diagram

On-Board Signal Processing

With a density equivalent of more than 11 million gates, the Xilinx XC2VP100 Virtex-II Pro FPGA offers a powerful signal-processing resource for the stream of data from the A/D converters. This stream is first demultiplexed by a factor of eight to produce 80-bit words at a reduced data rate of 250 MHz for successful delivery to the FPGA. The FPGA then performs various functions on the data including gating, triggering, formatting, memory transfers, and delivery to FPDP and VME interfaces. It also handles the switched serial fabric VXS interface using the on-chip RocketIO gigabit serial transceivers.

Since most of the logic and DSP resources are available, developers can implement custom signal-processing algorithms to process data in real-time. To simplify FPGA development tasks, Pentek offers its GateFlow® FPGA Design Resources which include the GateFlow FPGA Design Kit. Pentek also offers the ReadyFlow Board Support Package that allow the user to control the Model 6826 across the backplane from SBC and DSP boards through high-level C-callable commands.

Extensive Memory Supports Transient Capture and Buffering

Dual 64-bit high-speed DDR SDRAMs provide a total of up to 1 GB of memory to store raw data in transient-capture mode. The memory can also be used as an elastic buffer for storing burst signals like radar pulses in real-time for subsequent delivery to the I/O interfaces at a lower continuous rate. Custom FPGA configurations can take advantage of this large memory for more complex applications. Flash memory of 16 MB allows boot code storage for the two IBM 405 PowerPC microcontroller cores within the FPGA.

Output Interface Options

To support high-bandwidth data capture, the board includes several high-speed I/O channels to move data off-board for storage or processing. Two or four channels of FPDP-II data ports operating at up to 400 MB/second each deliver data to other VME cards. In addition, the board offers two serial switched-fabric VXS connections, each running full-duplex at 1.25 GB/second to support the new Xilinx Aurora, Serial RapidIO and PCI Express protocols. LVDS I/O is also available through P2 or on a second slot front panel.

Blazingly Fast Data-Capture and Processing Board with 2 GHz Sampling Rate

Model 6826
  • Dual Atmel AT84AS008 10-bit A/Ds
  • User-configurable Xilinx Virtex-II Pro FPGA
    with 11 million gates includes two PowerPC cores to
    create complete application engines
  • GateFlow® FPGA Design Resources: FPGA Design Kit
  • Pentek ReadyFlow Board Support Package for
    quick board startup and operation
  • Multiple high-speed FPDP and VXS I/O
  • Multiboard synchronization
  • Rugged and conduction-cooled versions

For more information, click here.