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1.1 EPEC: Invalid Destination Pointer (KP15)
The EPEC does not evaluate the destination pointer correctly when receiving USB data
from any endpoint into address areas 0xXXF000--0xXXFFFF (X=don‘t care). The data
is written into the respective address within the internal memory array at 0x00F000--
0x00FFFF instead. This does not apply for data transmission out of this area!
Workaround
Do not use upper 4 K of each 64 K memory block (0xXXF000--0xXXFFFF) as USB
receive buffer when running the devices with a system clock of 36 MHz.
There is no such restriction if the devices runs at 24 MHz system clock.
E-mail: info@telesys.ru