According to the PCIe retimer, the PCIe
system and the
electronic equipment, a decoding and descrambling module carries out decoding and descrambling
processing on output code streams of upstream equipment and outputs the code streams backwards, and when a low-
delay triggering condition is met, a control module modifies second-
class code streams in the decoding and descrambling code streams into first-
class code streams and outputs the first-
class code streams backwards; the de-
skew module performs de-
skew processing on the received code
stream and outputs the code
stream backwards; the coding and scrambling module carries out coding and scrambling
processing on the received code
stream and backwards outputs the code stream subjected to coding and scrambling processing; and the control module controls the low-
delay access to serve as the current working access after determining that the low-
delay access is aligned with the main access. According to the embodiment of the invention, the state
machine of the downstream device does not perform state hopping due to receiving the preset number of second type code streams, so that the state jump time of the upstream device and the downstream device can be dragged, the purpose of dragging the state
machine is achieved, and the PCIe retimer has more time to perform
path switching without error codes.