Barracuda-PMC+ BittWare High-Speed A/D I/O Card

The BittWare Barracuda-PMC+ (BCPM) High-Speed A/D I/O Card is a high-speed analog input board that provides data capture for two 14-bit, up to 105 MHz A/D channels and streams the data directly to a Xilinx Virtex-II FPGA, which provides A/D control and data distribution and front-end processing capabilities. A 64-bit, 66 MHz PCI interface and four SHARC link ports make the captured data available to the host board, and a bank of up to 512 MB of SDRAM is available for snapshot acquisitions.

The high-speed A/D interface features two 14-bit A/D conversion channels, each sampled at up to 105 MHz. Using high-quality 14-bit A/D converters from Analog Devices, the analog interface provides input bandwidth up to 350 MHz and is available with AC or DC coupled inputs. For clocking options, the board features an internal clock with an on-board programmable clock divider and an external clock and trigger. An optional oven controlled crystal oscillator (OCXO) is available for a high-stability clock in place of the standard on- board oscillator.

The Virtex-II reconfigurable FPGA (Xilinx) provides A/D control and data distribution for the Barracuda-PMC+ and is available for configurable preprocessing of high speed A/D data, such as digital filtering, decimation, and digital down conversion. To interface the A/D data to the host, the Virtex-II contains a link port interface for directly accessing ADSP-TS101S or ADSP- 2116x DSPs and a local bus interface to access the PCI host and the SDRAM buffer.

BittWare’s SharcFIN ASIC provides a full 64-bit, 66 MHz bus mastering PCI interface and an SDRAM controller to interface the SDRAM and Virtex-II to the PCI host. The SharcFIN interfaces to the PCI bus at 64 bits, 66 MHz for 528 MB/s burst throughput and provides both bus mastering DMA capability and slave access to the SDRAM and Virtex-II.

The Barracuda-PMC+ is fully compatible with any PMC capable base board. When attached to one of BittWare’s PMC+ base boards, it also supports BittWare’s PMC+ extensions, which include four link ports directly to the Virtex-II FPGA. The PMC+ link ports are configurable for BittWare’s Tiger (ADSP-TS101S) base boards* and are an ideal way to move high-speed data directly to the DSPs.