Additional Features; High Assurance Boot (Hab); Dedicated Hardware Accelerators; Power Management - Congatec Qseven conga-QMX6 User Manual

6

Additional Features

6.1

High Assurance Boot (HAB)

The High Assurance Boot is a software library executed in internal ROM on the Freescale
authenticates software in external memory by verifying digital signatures. The HAB enables the ROM to authenticate software which executes
immediately after ROM, by using digital signatures. This software is usually a bootloader. The High Assurance Boot component of the ROM
protects against the potential threat of attackers modifying areas of code or data in programmable memory to make it behave in an incorrect
manner.
6.2

Dedicated Hardware Accelerators

The Freescale® i.MX6 processor uses dedicated hardware accelerators to meet the targeted multimedia performance. The use of hardware
accelerators is a key factor in obtaining high performance at low power consumption while having the CPU core relatively free for performing
other tasks. The hardware accelerators available in the processor are VPU, IPUv3H, 3D GPU, 2D GPU, OpenVG 1.1 GPU and Asynchronous
Sample Rate Converter (ASRC).
6.3

Power Management

The Freescale i.MX6 processor integrates power management functions to simplify system power management requirements. The processor
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provides power management units for offering power to various Soc domains. Temperature sensor for monitoring the die temperature is also
provided.
Dynamic Voltage and Frequency Scaling techniques, software state retention, power gating and various levels of system power mode are
supported. The use of simple and low-cost power regulators in place of complicated external power management ICs reduces system design
cost.
6.4

Dynamic Voltage and Frequency Scaling

Dynamic Voltage and Frequency Scaling is a power management technique used in changing the clock frequency and/or the operating voltage
of a processor based on system performance requirements at any point in time. This scaling is normally carried out during less demanding
periods of nominal run speed. In General, it helps in balancing the performance demands of processor with the high amount of power needed
to satisfy those demands.
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processor at boot time, which among other things,
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