Pentek’s Model 7156 Dual Channel Transceiver is a PMC module that includes two 400 MHz A/D converters with 14-bit resolution and two 800 MHz D/A converters with 16-bit resolution. Both data converters on the 7156 use new Texas Instrument ADS5474 and the DAC5688 monolithic devices. The dual FPGA architecture of the 7156 delivers power and the flexibility to handle custom DSP algorithms in the signal processing FPGA and custom I/O functions in the interface FPGA. Both FPGAs are members of Xilinx’s Virtex-5 family allowing customers to choose specific FPGA devices for each to fulfill particular requirements.
Pentek Model 7156 Dual Channel Transceiver Features
- Two Xilinx Virtex-5 FPGAs
- Complete software radio interface solution
- Two 400 MHz, 14-bit A/Ds
- One digital upconverter
- Two 800 MHz, 16-bit D/As
- Up to 1 GB of DDR2 SDRAM
- Dual timing buses for independent A/D and D/A clock rates
- LVPECL clock/sync bus for multimodule synchronization
- VITA 42.0 XMC compatible with swithced fabric interfaces
- 32 pairs of LVDS connections to the Virtex-5 FPGAs for custom I/O on P14
All of the board’s data and control paths are accessible by the FPGAs, enabling factory-installed functions including data multiplexing, channel selection, data packing, gating, triggering, and SDRAM memory control. In addition to the built-in functions, users can install their own custom IP for data processing. Pentek GateFlow FPGA Design Kits facilitate integration of user-created IP with the factory shipped functions.
The processing FPGA serves as a control and status engine with data and programming interfaces to each of the on-board resources including the data converters, DDR2 SDRAM memory, interface FPGA, programmable LVDS I/O and clock, gate and synchronization circuits. The processing FPGA can be populated with a variety of different FPGAs to match the specific requirements of the processing task. Supported FPGAs include: Virtex-5 SX50T, SX95T, LX50T, LX155T, and FX100T.
The SXT parts feature between 288 and 640 DSP48E slices and are ideal for demodulation/modulation, decoding/encoding, decryption/encryption, digital delay, and channelization of the signals between reception and transmission. For applications requiring more FPGA logic cells, the board can be optionally configured with an LX155T in the processing FPGA position for 156,648 logic cells.
A second Virtex-5 FPGA provides the board’s PCI-X interface. Implementing the interface in this second FPGA keeps the processing FPGA resources free for signal processing. The interface FPGA can be configured as an LXT family or an SXT family part, providing not only interfacefunctionality, but processing resources up to an additional 640 DSP48E slices.
More information: Pentek