DescriptionThe GN4124 is a four lane PCI Express to local bus bridge that is designed to work as a companion for low-cost FPGA devices to provide a complete bridging solution for general applications. In addition to a 4-lane PCI Express compliant PHY interface, the GN4124 also contains the data link and transaction layers, and an applications interface that is ideally suited to FPGA interfacing using a small number of pins.
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Since the PCI Express transaction/link IP is hard-wired into the GN4124, there is no need to license PCIe IP. The level of integration and very low power operation of the GN4124 make it an ideal alternative to using a PIPE PHY, where IP licensing and the cost of FPGA resources and power consumption is unattractive by comparison. Using the GN4124 allows FPGA resources to be spent on what differentiates the product rather than on implementing the PCI Express protocol.
Key benefits of the GN4124:
- Supports true bi-directional traffic
- Easy to use with a pin-efficient attachment interface to low-cost FPGA devices
- Features an FPGA bitstream loader that enables configurable computing and in-field firmware upgrade
- Live on power up without FPGA programming
- Provided with royalty-free FPGA local bus IP
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A turn-key Reference Design Kit is available with Gennum supplied FPGA IP:
FPGA IP
- Master/Target Controller
- Scatter/gather DMA supports up to 512 channels
- Easy attachment to customer application IP
- Royalty free source code available
Software
- Jungo based driver and example application code
- DirectShow driver/filter
- Source code available
RDK Board
- GN4124 + Spartan 3A 1400
- On board DDR SDRAM
- Connects to SDI transmitter/receiver RDK for video capture
- Schematics, board layout available
GN4124 Data Sheet
