pls, почитайте кто-нибудь вслух про xc3s50an
Цитата
The MultiBoot feature stores multiple configuration files in
the on-chip Flash, providing extended life with field
upgrades. MultiBoot also supports multiple system
solutions with a single board to minimize inventory and
simplify the addition of new features, even in the field.
Flexibility is maintained to do additional MultiBoot
configurations via the external configuration method.
The Spartan-3AN device authentication protocol prevents
cloning. Design cloning, unauthorized overbuilding, and
complete reverse engineering have driven device security
requirements to higher and higher levels. Authentication
moves the security from bitstream protection to the next
generation of design-level security protecting both the
design and embedded microcode. The authentication
algorithm is entirely user defined, implemented using FPGA
logic. Every product, generation, or design can have a
different algorithm and functionality to enhance security.
не пойму, prevents cloning - это как ? в impact вижу только два бита - data protect и data lockdown, что какбэ не предполагает защиту от копирования
и ещё: правильно ли что, первый запрещает программирование флеша, но может быть стёрт ? а второй запрещает программирование флеша навсегда и чип идёт в мусорку ?
Сообщение отредактировал Огурцов - Jun 8 2017, 17:08