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Altera_Forum
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13 years ago

CFI Flash software driver Support for 32-bits Flash

Hi, Does the CFI flash software driver support 32-bits flash? My QSYS system is having 32-bits ext flash. When I tried memory test from Eclipse template, it always fails to open the flash. It...
Altera_Forum's avatar
Altera_Forum
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13 years ago

If your flash memory only supports 32bit accesses, you should leave byteenable signals unconnected.

addr[2] from the tristate bus should be connected to A0 pin on flash memory, addr[3] to flash A1, and so on.

If your flash memory also supports 8 and 16bit modes, you may need to connect tristate addr[n] to flash A[n] because the flash memory itself uses byte addressing. Refer to flash datasheet