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Partner Product

Model 5331  (Pentek Inc)
Model 5341 is a software radio transceiver suitable for connection to HF or IF ports of a communications system. It features two A/D and two D/A converters, and is capable of bandwidths to 50 MHz and above. The 5341 features built-in support for PCI Express (PCIe) Gen. 2 over the 3U VPX backplane. A unique fabric-transparent crossbar switch configuration adds gigabit serial data paths for Xilinx Aurora or Serial RapidIO applications.

Product Highlights

*Complete software radio interface solution for 3U VPX systems *Supports Gigabit Serial Fabrics including PCI Express, Serial RapidIO and Xilinx Aurora * Two 125 MHz 14-bit A/Ds *Four digital downconverters *One digital upconverter *Two 500 MHz 16-bit D/As *512 MB of DDR SDRAM * Xilinx Virtex-II Pro FPGA *Up to 1.28 seconds of delay or data capture at 100 MHz *Dual timing buses for independent input and output clock rates *LVDS clock/sync bus for multiboard synchronization *32 pairs of LVDS connections to the Virtex-II Pro FPGA for custom I/O *Compatible with several VITA standards including: VITA-46 (VPX Baseline Standard) VITA-48 (VPX REDI) VITA-65 (OpenVPXTM System Specification)

Product Description

A/D Converter Stage

The front end accepts two full scale analog

HF or IF inputs on front panel MMCX

connectors at +10 dBm into 50 ohms with

transformer coupling into LTC2255 14-bit

125 MHz A/Ds.

The digital outputs are delivered into the

Virtex-II Pro FPGA for signal processing or

for routing to other module resources.

Digital Downconverter Stage

The 5341 features a TI/Graychip GC4016

quad digital downconverter, accepting

either four 14-bit inputs or three 16-bit digital

inputs from the FPGA, which determines

the source of GC4016 input data. These

sources include the A/Ds, FPGA signal

processing engine, SDRAM delay memory

and data sources on the VPX backplane.

Each GC4016 channel may be set for independent

tuning frequency and bandwidth.

For an A/D sample clock frequency of

100 MHz, the output bandwidth for each

channel ranges from 5 kHz up to 2.5 MHz. By

combining channels, output bandwidth of up

to 5 or 10 MHz can be achieved.

Digital Upconverter Stage

A TI DAC5686 digital upconverter and

dual D/A is attached to the FPGA, accepting

baseband real or complex data streams with

signal bandwidths up to 40 MHz.

When operating as an upconverter, it

interpolates and translates real or complex

baseband input signals to any IF center

frequency between DC and 160 MHz. It

delivers real or quadrature (I+Q) analog

outputs through two 320 MHz 16-bit D/A

converters to two front panel MMCX connectors

at +4 dBm into 50 ohms.

If translation is disabled, the DAC5686

acts as a two channel interpolating 16-bit D/A

with output sampling rates up to 500 MHz.

Clocking and Synchronization

Two independent internal timing buses

can provide either a single clock or two

different clock rates for the corresponding

input and output signals.

Each timing bus includes a clock, sync,

and gate or trigger signal. Signals from

either Timing Bus can be selected as the timing

source for the A/Ds, downconverter, upconverter

and D/As. Two external reference

clocks or two internal clocks may be used

for each timing bus.

A front panel 26-pin LVDS Clock/Sync

connector allows multiple boards to be

synchronized. In the slave mode, each

accepts differential LVDS inputs that drive

the clock, sync and gate signals for the

two internal timing buses.

In the master mode, the LVDS bus can

drive one or both sets of timing signals

from the two internal timing buses for

synchronizing multiple boards.

Up to seven slave 5341 boards can be

driven from the LVDS bus master, supporting

synchronous sampling and sync functions

across all connected boards.

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