Botev,
Thanks for reply.
Sorry I missed the URL:
http://e2e.ti.com/support/dsp/tms320c6000_high_performance_dsps/f/115/p/266886/975236.aspx#975236
It seems that the limitation is ROM code can't access that large space but we can use larger flash depends on its type.
Please correct me.
BR,
Eason