Lockbox Key Security Features; Memory Map - Analog Devices ADSP-BF518F EZ-Board Manual

Lockbox Key Security Features

Blackfin processors feature Lockbox
ware-enabled code security and content protection for one-time
programmable (OTP) memory. Customers purchasing Blackfin processors
can program their own customer public key in OTP.
The ADSP-BF518F EZ-Boards are evaluation boards with the Lockbox
key pre-programmed and publicly documented—the burden of key gener-
ation and OTP programming of public keys is removed from the
customer. Customers can still program other areas of OTP memory on the
ADSP-BF518F EZ-Board. Analog Devices publicly document the
EZ-Board's public and private key pair for customer evaluation and sup-
port of the Lockbox feature, all while avoiding any keys information
exchange. As a result, there is no confidentiality associated with the Lock-
box key on EZ-Boards.
To demonstrate Lockbox features using an EZ-Board, you must use the
keys that are provided pre-programmed on your EZ-Board.

Use the EZ-Board key pair to generate a demo and then provide
the keys to the demo users. Note that the EZ-Board cannot be used
to secure any confidential information. If you wish to create a
demo with confidential keys, you must build your own Blackfin
board and personalize it with your own keys.

Memory Map

The ADSP-BF518F processor has internal static random access memory
(SRAM) used for instructions and data storage. See
nal memory details can be found in the ADSP-BF51x Blackfin Processor
Hardware Reference.
The ADSP-BF518F EZ-Board includes four types of external memory:
synchronous dynamic random access memory (SDRAM), serial peripheral
ADSP-BF518F EZ-Board Evaluation System Manual
Using the ADSP-BF518F EZ-Board
®
secure technology: hard-
Table 1-1. The inter-
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