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EP2AGX260HH40I4N

Arria II Device Handbook

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Chapter 9: Configuration, Design Security, and Remote System Upgrades in Arria II Devices

Design Security

9–65

Security Modes Available

The following security modes are available on the Arria II device:

Volatile Key

Secure operation with volatile key programmed and required external battery—this

mode accepts both encrypted and unencrypted configuration bitstreams. Use the

unencrypted configuration bitstream support for board-level testing only.

Non-Volatile Key

Secure operation with one-time-programmable (OTP) security key

programmed—this mode accepts both encrypted and unencrypted configuration

bitstreams. Use the unencrypted configuration bitstream support for board-level

testing only.

Volatile Key with Tamper Protection Bit Set

1 Arria II GZ devices do not support this feature.

Secure operation in tamper resistant mode with volatile security key

programmed—only encrypted configuration bitstreams are allowed to configure the

device. Tamper protection disables JTAG configuration with unencrypted

configuration bitstream.

1 Enabling the Tamper Protection bit disables the test mode in Arria II devices. This

process is irreversible and prevents Altera from carry-out failure analysis. Contact

Altera Technical Support to enable the tamper protection bit.

Non-Volatile Key with Tamper Protection Bit Set

Secure operation in tamper resistant mode with OTP security key

programmed—only encrypted configuration bitstreams are allowed to configure the

device. Tamper protection disables JTAG configuration with unencrypted

configuration bitstream.

1 Enabling the Tamper Protection bit disables the test mode in Arria II devices. This

process is irreversible and prevents Altera from carry-out failure analysis. Contact

Altera Technical Support to enable the tamper protection bit.

July 2012 Altera Corporation

Arria II Device Handbook Volume 1: Device Interfaces and Integration

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