ALTERA cyclone3_handbook 硬件技术手手册-348页

ALTERA cyclone3_handbook 硬件技术手手册-348页

Cyclone® III device family offers a unique combination of high functionality, low

power and low cost. Based on Taiwan Semiconductor Manufacturing Company

(TSMC) low-power (LP) process technology, silicon optimizations and software

features to minimize power consumption, Cyclone III device family provides the ideal

solution for your high-volume, low-power, and cost-sensitive applications. To address

the unique design needs, Cyclone III device family offers the following two variants:

■ Cyclone III—lowest power, high functionality with the lowest cost

■ Cyclone III LS—lowest power FPGAs with security

With densities ranging from about 5,000 to 200,000 logic elements (LEs) and

0.5 Megabits (Mb) to 8 Mb of memory for less than ¼ watt of static power

consumption, Cyclone III device family makes it easier for you to meet your power

budget. Cyclone III LS devices are the first to implement a suite of security features at

the silicon, software, and intellectual property (IP) level on a low-power and

high-functionality FPGA platform. This suite of security features protects the IP from

tampering, reverse engineering and cloning. In addition, Cyclone III LS devices

support design separation which enables you to introduce redundancy in a single

chip to reduce size, weight, and power of your application.

This chapter contains the following sections:

Design Security Feature

Cyclone III LS devices offer the following design security features:

■ Configuration security using advanced encryption standard (AES) with 256-bit

volatile key

■ Routing architecture optimized for design separation flow with the Quartus® II

software

■ Design separation flow achieves both physical and functional isolation

between design partitions

■ Ability to disable external JTAG port

■ Error Detection (ED) Cycle Indicator to core

■ Provides a pass or fail indicator at every ED cycle

■ Provides visibility over intentional or unintentional change of configuration

random access memory (CRAM) bits

■ Ability to perform zeroization to clear contents of the FPGA logic, CRAM,

embedded memory, and AES key

■ Internal oscillator enables system monitor and health check capabilities