Power Gating Retention - Semiconductor Engineering
2019年1月12日 · To speed power-up recovery, state retention power gating (SRPG) flops can be used. These retain their state while the power is off, provided that specific control signaling requirements are met. Cell libraries today may include such special state retention cells.
2007年2月27日 · SRPG flops are used extensively to reduce the leakage current during low-power modes. The architecture of these SRPG flops is to operate the slave latch on a powered-up supply and the master latch on a switchable supply, with the slave latch being completely detached from master latch through pass-gates on assertion of state-retention enable pin.
Selective State Retention Power Gating Based on Formal Verification
2014年12月24日 · A new selective approach for State Retention Power Gating (SRPG) based on Module Checking formal verification techniques is presented, and so-called Selective SRPG (SSRPG). The proposed approach is applied in order to minimize the number of retention flip flops required for state retention during sleep mode.
Low Power设计中的Retention技术 - 知乎 - 知乎专栏
所谓DVFS就是 动态电压频率调节技术。 它并不会给模块断电，而是在模块idle的时候，调低其电压，关掉其CLK，这样可以保证信息不丢失。 在模块工作的时候，根据运行负载来动态调节电压和频率。 关于Power Gating，DVFS以及CLK Gating，您可以在我的知乎专栏上看到相关文章，关注作者即可。 那么如果我们又想用Power Gating，又想不丢失信息，从而可以快速启动呢？ 这就是所谓的 Retention。 今天我们只讲最简单的 带Retention的寄存器 设计。 支持Retention的设 …
Power Gating (PG) is now well understood as a technique for reducing static leakage power when circuits are idle [3]. State-Retention Power Gating (SRPG) enhancements in hardware [4] can address fast wake-up latency and transparency to system software but have area, performance and robustness/reliability impacts that need minimizing [5].
Selective State Retention Power Gating Based on Gate-Level …
2013年12月3日 · This algorithm enables the extraction of a subset of flip-flops that is sufficient for a proper state retention power gating. Unique selective SRPG criteria have been defined to support the proposed algorithm.
Agile C-states: A Core C-state Architecture for Latency Critical ...
2024年7月2日 · SRPG is a special flip-flop fed with two supplies: power gated and power ungated. Such a flip-flop typically contains a shadow flip-flop to retain its state when the unit it resides in is power gated [58, 67, 75]. Intel uses this technique in the chipset to retain the state of autonomously power-gated units .
Selective State Retention Power Gating Based on Gate-Level …
2014年4月1日 · To implement the new approach, an automatic algorithm, which is performed on a gate-level netlist, has been developed. This algorithm enables the extraction of a subset of flip-flops that is...
VLSI SoC Design: State Retention Power Gating - Blogger
2013年3月12日 · Even a simple 2-input NAND gate has 4 transistors itself. And higher order input would have more! Same technique can be applied to any sequential device like a Flip Flop, latch or even a clock gating integrated cell.
A New Physical Design Flow for a Selective State Retention Based …
2021年7月28日 · This technique uses unique retention cells to retain the flip-flops (FFs) values during power down (standby state). These cells have been widely adopted in standard library cells of major FAB vendors (such as TSMC). The SRPG approach aims to retain the systems state during standby, thus eliminating the disadvantages of the power-gating technique.