Data transmission method and data transmission system for PCI-E

• Main Author: PAN GUOJIE
• Format: Patent
• Language: English
• Published: 21.01.2015
• Subjects: CALCULATING; COMPUTING; COUNTING; ELECTRIC DIGITAL DATA PROCESSING; PHYSICS

The embodiment of the invention provides a data transmission method and a data transmission system for a PCI-E (Peripheral Component Interface Express). The method can comprise the following steps of: judging whether a slave device is in an off-line state or not to obtain a first judging result; when the first judging result shows that the slave device is in the off-line state, judging whether the slave device responds to instructions of a master device or not to obtain a second judging result; and when the second judging result shows that the slave device does not respond to the instructions of the master device, sending a first response instruction to the master device so that the master device stops waiting for the response instruction sent from the slave device, wherein the first response instruction shows that the slave device is not well prepared. When the method or the system provided by the embodiment of the invention is adopted, the off-line state of the slave device can be fed back to the master device in time; and the influence time of the hot plug process of the slave device on the data processing service is reduced, so that the robustness of a PCI-E interface in the hot plug process can be improved.