hi
Manufacturers claim that SRAM based FPGAs can be used in state of the art products and perform well over a long period of time, but my experience negates that.
Two years ago, we developed a "real time face recognition system" using xilinx XC2V6000 on AVNET development kit and delivered the final working product to end user; Who Recently came up with a complaint that the product is not functioning properly. Our technical staff identified that the DCM output (2X clock) is no more in synch with other clocks on the board. same old bitstream was working when we changed the board , and we concluded that the board is faulty.
The faulty board was again working perfectly fine when we used phase shifted DCM output clock. (CLK2X180_OUT)
1-- Maximum working life of FPGA based products is dependant on the device and oscillator characteristics?2-- What if the same problem arise in commercially manufactured product (whose millions of pieces have been sold) ?
any comments from more experienced users??
regards MH