Patent ID: 11934691
Assignee: SAMSUNG ELECTRONICS CO., LTD.
Field: Computer technology (Electrical engineering)
Classification: CPC G | IPC G

Claim 0:
1. A method for link startup between a first device and a second device, the method comprising:
performing initialization in a high speed mode, in both directions, between the first device and the second device, based on a high speed link up message transmitted by the first device;
discovering connected data lanes between the first device and the second device, based on a first trigger event transmitted by both of the first and second devices, the first trigger event including physical lane numbers of available transmission lanes of each of the first device and the second device;
realigning data lanes between the first device and the second device, based on a second trigger event on the available transmission lanes transmitted by both of the first and second devices, the second trigger event including information about connected transmission lanes of each of the first device and the second device;
matching logical data lane numbers of the connected data lanes between the first device and the second device, based on a third trigger event on the available transmission lanes transmitted by both of the first and second devices, the third trigger event including logical lane numbers of the connected transmission lanes of each of the first device and the second device; and
exchanging information about a capability of a counterpart device on the available transmission lanes between the first device and the second device,
wherein the high speed link up message includes transitioning a line in the connected data lane of the first device from a zero differential line voltage DIF-Z to an activate period having a negative differential line voltage DIF-N, and
wherein, when a length of the activate period is less than a first time, the first device and the second device enter the high speed mode.