US 2017/0322614 A1 · POWER MANAGEMENT TECHNIQUES

Abstract

Systems, apparatuses, and methods for improved power management techniques. An apparatus may include a display control unit, a communication fabric, a memory controller, a memory cache, and a memory. When the memory is power-gated, and the display control unit needs to fetch pixel data, the display control unit may send a wake-up signal to the memory before sending a wake-up signal to the communication fabric. The display control unit may then issue the pixel fetch request later. Additionally, if the display control unit determines that the pixel data has a high probability of being cached, then the display control unit may not send a wake-up signal to the memory, and the display control unit may issue the request earlier. More generally, the display control unit may send wake-up signals to multiple components in a manner which accounts for the wake-up latency of each component.

Claims20

Dependent claims

A display control unit comprising:

an interface configured to convey requests to a first component via a second component, wherein a wake-up latency of the first component is greater than a wake-up latency of the second component;
a buffer;
and
control logic;
wherein responsive to detecting a first condition, the control logic is configured to:
send a first wake-up signal to the first component using a first buffer threshold to determine when to send the first wake-up signal;
and
send a second wake-up signal to the second component using a second buffer threshold to determine when to send the second wake-up signal, wherein the second buffer threshold is less than the first buffer threshold.

5 more elements

Dependencies are inferred from the claim text.

Power management techniques

Life of this patent

Power management techniques

Life of this patent

Abstract

Claims20