US 11,726,947 B2
Interface device and method of operating the same
Dae Sik Park, Icheon-si (KR); Byung Cheol Kang, Icheon-si (KR); and Seung Duk Cho, Icheon-si (KR)
Assigned to SK HYNIX INC., Icheon-si (KR)
Filed by SK hynix Inc., Icheon-si (KR)
Filed on Oct. 27, 2020, as Appl. No. 17/81,595.
Claims priority of application No. 10-2020-0073157 (KR), filed on Jun. 16, 2020.
Prior Publication US 2021/0390074 A1, Dec. 16, 2021
Int. Cl. G06F 13/42 (2006.01); G06F 1/08 (2006.01); G06F 13/40 (2006.01)
CPC G06F 13/4291 (2013.01) [G06F 1/08 (2013.01); G06F 13/4022 (2013.01); G06F 13/4059 (2013.01)] 12 Claims
OG exemplary drawing
 
1. A method of operating a system that includes a first interface device including a first buffer and structured to be operable to be in communication with a second interface device that is not included in the system and includes a second buffer, the method comprising:
initializing one or more parameters associated with clock signals for a data reception of the first interface device;
checking whether the first interface device is in a predetermined mode for adjusting the one or more parameters;
adjusting, upon determination that the first interface device is in the predetermined mode, the one or more parameters associated with the clock signals of the first interface device based on how much of the second buffer is filled with data, by transmitting information indicating that a pre-underflow or a pre-overflow is generated in the first buffer to the second interface device; and
performing the data reception based on the adjusted one or more parameters associated with the clock signals,
wherein adjusting the one or more parameters includes widening a clock frequency range of a spread spectrum clocking scheme by which a clock frequency during a data transmission is changed within the clock frequency range.