The bulk erase instruction (FBULK) has been enabled in JTAG ID revision 1 or greater silicon for the XC95216 and XC95108. The revision 1 designation is delineated by a 1 in the 4 msb of the JTAG ID register. FBULK groups together sectors and erases them at the same time. The erase time of XC95108 with 6 sectors is reduced from 20 to 5 seconds,while the XC95216 with 12 sectors is reduced from 40 to 5 seconds.
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