Method of achieving switching of PCIE bus and circuit

Abstract

The invention provides a method of achieving the switching of the standard peripheral component interconnect extended (PCIE) bus and a device. The method comprises the steps that the branch circuits of PCIE bus of the PCIE devices in need of switching and connections are determined; by the branch circuits determined utilizing the breakover of capacitors, the PCIE devices in need of switching and connections are connected. By the method of achieving the switching of PCIE bus and the circuit, the breakover of the branch circuits of the PCIE devices is achieved by capacitors, the signal loss of the PCIE bus is reduced.

Description

technical field [0001] This article relates to but not limited to computer technology, especially a circuit for implementing peripheral component interconnect standard extension (PCIE) bus switching. Background technique [0002] Server systems often need to use Peripheral Component Interconnect Express (PCIE, Peripheral Component Interconnect Express) devices as external interface devices; server manufacturers expand more PCIE interfaces to be more competitive in the server market. [0003] For server systems, the number of expansion PCIE interfaces for each platform is limited. If you want to have more or more flexible PCIE configurations, it is generally achieved by adding a switching chip. figure 1 It is a schematic circuit diagram for realizing PCIE bus switching in the related art, figure 1 Taking a group of X8 PCIE buses as an example, a switching chip is used at the branch connecting two PCIE devices to perform one-to-two switching of the PCIE bus, and the switchin...

AI Technical Summary

Problems solved by technology

[0004] The switching process implemented by switching chips will bring signal integrity problems and a certain signal loss; for example, the loss at 4 GHz (GHz) is about -2 decibels (dB), which is equivalent to an intermediate printed circuit board (PCB) ) plate, about 3 inches (INCH) transmission line length, and increases the manufacturing cost of the chip

Images