ICE-Grain Power Architecture

  • Supports fine-grain power partitioning with autonomous control
  • Saves more power than conventional software approaches
  • Makes highly sophisticated power management techniques easy to adopt in a complete subsystem solution.

Key Features and Benefits:

1) The first commercial technology to manage and control all common power techniques in a unified environment.

-Hardware identification of power saving opportunities
-Unique “wake on demand” technique allows automated grain shut down and instantaneous wake up when needed
-Hardware control of clock, isolation, retention, and power gating sequences
-Hardware control of operating points for DVFS (dynamic voltage and frequency scaling) and AVS (adaptive voltage scaling)
-Leverages existing software-controlled power management techniques

2) Scalable, distributed, and modular architecture.

-Centralized grain controller block manages individual and inter-grain power sequencing and operating point assignment
-Distributed, local controller blocks per grain handle power sequence execution and minimize the logic in the always on domain
-Hardware event control system supports hundreds of grains with predictable, low latency and virtually no impact on processor performance

3) Easy, worry-free implementation of hardware control and fine-grain power reduction.

-Scales to support hundreds of power grains that are correct-by-construction and include on-chip debug and monitoring
-Minimal area and power impact to the original design

4) EDA tool support complies with industry-standard tools, flows, and formats.

5) Complete, integrated solution; no special power expertise required.

-With the ICE-Grain Power Architecture, designers work at the highest level of abstraction, which means they do not have to be power management experts to adopt and use the solution.
-Leverages existing power management techniques where designers can integrate some or all of their existing software-based approach