Patent ID: 11940942
Assignee: SK HYNIX INC.
Field: Computer technology (Electrical engineering)
Classification: CPC G | IPC G

Claim 11:
12. A method of operating a Peripheral Component Interconnect Express (PCIe) interface device, the method comprising:
generating, by a transaction layer, a transaction packet to transmit a transaction;
generating, by a data link layer, a link packet including a protection code and a sequence number for the transaction packet on the basis of the transaction packet;
generating, by a physical layer, a physical packet on the basis of the link packet, and sequentially outputting the physical packet;
performing negotiation for a link coupled through the physical layer by transmitting and receiving the physical packet;
maintaining a data information about the transaction layer, the data link layer, the physical layer and the link training module when a link down, which occurs when a negotiation of a link does not occur, is not requested by a host; and
initializing the data information when a link down, which occurs when a negotiation of a link does not occur, is requested by the host.