SPI Flash configuration and data access rate
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From: Martin Thompson on 5 Jul 2010 06:57 Gladys <yuhui.b(a)gmail.com> writes: > Sorry, for the 2nd question, I just forgot that I can use Lool Up > Table, just use CASE statement to implement this. > So the only problem is how can I access the location data from SPI > flash, since these data should be always available for bad pixel > correction while FPGA running. If you use a BRAM to store the data, you can arrange to have it initialised by the bitstream, so you don't need to do that. This means a new bitstream for each set of bad pixels though, so that might not work out in your application! In which case, you need to write a small peripheral, or use a small microcontroller core in the FPGA to read the data from the SPI flash (once, at startup) into a BRAM internally. Then you can use that data to feed to your dead-pixel corrector. Cheers, Martin -- martin.j.thompson(a)trw.com TRW Conekt - Consultancy in Engineering, Knowledge and Technology http://www.conekt.net/electronics.html |