US 12,079,490 B2
Reducing power consumption associated with frequency transitioning in a memory interface
Anwar Kashem, Boxborough, MA (US); Craig Daniel Eaton, Austin, TX (US); and Pouya Najafi Ashtiani, Munich (DE)
Assigned to Advanced Micro Devices, Inc., Santa Clara, CA (US)
Filed by Advanced Micro Devices, Inc., Santa Clara, CA (US)
Filed on Dec. 29, 2021, as Appl. No. 17/565,372.
Prior Publication US 2023/0205433 A1, Jun. 29, 2023
Int. Cl. G06F 3/06 (2006.01)
CPC G06F 3/0625 (2013.01) [G06F 3/0655 (2013.01); G06F 3/0673 (2013.01)] 24 Claims
OG exemplary drawing
 
1. A method for frequency transitioning in a memory interface system, comprising:
receiving a signal indicative of a change in operating frequency, to a new frequency, in a processing unit interfacing with memory via the system;
switching the system from a normal mode of operation to a transition mode of operation;
updating control and state register (CSR) banks of respective transceivers of the system through a dedicated bus for transmissions to and receptions from memory used during the normal mode of operation; and
operating the system in the new frequency.