GX3788： High performance, FPGA multifunctional PXI board

• User configurable onboard Altera Stratix III FPGA
• 96 channel digital I/O
• 8-channel, 16 bit differential, 250KS/s A/D input channel
• 8-channel, 16 bit, 1MS/s D/A output channel
• Modular software is fully compatible with Altera's configuration files
• No need for specialized FPGA design tools
• Compatible with Altera's Quartus II free web design tool
• Internal DMA controller
• Onboard 8MB SSRAM

brief introduction

GX3788 is a user configurable 3U FPGA PXI multifunctional board that supports digital and analog testing. The board application is Altera's Stratix III series FPGA, which has 45000 logic units and 1.836Kb of memory. The GX3788 is integrated with the GX3700 and a daughter card extension. The daughter card has 8 differential input channels, 16 bit, 250KS/s A/D converters, and 8 16 bit, 1MS/s, D/A converters.

FPGA is pre programmed and provides functions to access all digital and analog channels. Users can change or modify FPGAs, allowing them to adjust FPGAs according to specific testing requirements. FPGA can be designed using Altera's Quartus II free web design tool. Once the user completes the FPGA design, the design files can be loaded into the FPGA through the PXI bus interface or onboard EEROM.

characteristic

The GX3788 digital I/O signal is TTL compatible and can be programmed to be configured as an input or output. The A/D channel can be configured with 8 differential or 16 single ended inputs, with a sampling rate of 250KS/s. Optional two channel operation with a sampling rate of 1MS/s. The D/A channel supports synchronous sampling rate of 1MS/s. FPGA supports 4 PLLs for clock synchronization and clock generation. The reference clock for FPGA can be either an onboard 80MHz oscillator or a PXI 10MHz clock.

FPGA can access all PXI bus resources, including PXI 10MHz clock, local bus, and PXI trigger bus. This feature allows users to create a self-made instrument that combines PXI bus resources. The GX3788 driver can be used to control and access FPGA, which includes DMA and tools for downloading edited FPGA code, and supports read and write functions for registers. In addition, the dedicated interface logic supports the PCI bus, avoiding the design steps of combining the PCI bus interface with the user's FPGA.

Programming and software

The board is equipped with GXFPGA library, and the software package includes a virtual instrument panel, Windows 32/64 bit DLL, and documentation. The virtual panel provides interactive programming and control of the instrument through a window that displays its current settings and status. In addition, providing access to ATEasy, LabView，LabView/Real-Time，C/C++，Microsoft Visual Basic ®， Delphi， Interface files for programming tools and languages such as Pascal. The online help document and PDF user manual provide instructions and guidance on board installation, use, and programming.

Application Fields

• Automatic Test Equipment (ATE)
• semiconductor testing
• Mixed signal Testing
• Custom interface simulation
• self-made instrument