Hi,
I want to build a dvi to lvds konverter. Betweeen there two busses, I have a 24 bit parallel bus. Eventually I want to do some signal processing with the parallel data too. Will an FPGA be fast enough for this task?
regards, Ben
Parallelsignal at 85 MHz
Apr 01, 2005
2 Replies
85Mhz parallel buses are not an issue for newer fpgas. Are you proposing to interface the fpga directly to the DVI serial pin or interface to a stand alone serdes? Lattice has a new low cost fpga with built in DSP blocks, the ECP. It is an ideal device to process signals. It does not have serdes built in though.
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I designed a 16b datapath running @120MHz for a Xilinx Spartan-3 XC3S1000-FT256-4 (the slowest one) w/o any problem as long as you use a good VHDL synthesizer. The FPGA does not cost more than a few 10s$. So It's possible. Notice however that multipliers are scarce ressources for FPGA. Video processing w/ its trend to use // implementations (to sustain the sample rate) can require many of them if you don't take this constraints into account from the very beginning.
Eric
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