Working mode switching method and device of PCIE switching chip

The invention discloses a working mode switching method and device of a PCIE (Peripheral Component Interface Express) switching chip. The working mode switching method comprises the following steps insequence in response to a received working mode switching instruction: latching configuration inform...

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Bibliographic Details
Main Author DENG WENBO
Format Patent
LanguageChinese
English
Published 11.02.2020
Subjects
CALCULATING
COMPUTING
COUNTING
ELECTRIC DIGITAL DATA PROCESSING
PHYSICS
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Summary:The invention discloses a working mode switching method and device of a PCIE (Peripheral Component Interface Express) switching chip. The working mode switching method comprises the following steps insequence in response to a received working mode switching instruction: latching configuration information of an old working mode by using an input/output expander, and outputting a high level to a corresponding configuration pin of the PCIE switching chip; sending firmware data of a new working mode to the PCIE switching chip, and writing the firmware data of the new working mode into the nonvolatile memory through the serial external equipment interface; powering off and restarting all equipment, latching the configuration information of the new working mode by using an input/output expander, and outputting a high level to a corresponding configuration pin of the new working mode of the PCIE switching chip; and reading and loading firmware data of the new working mode from the nonvolatile memory through the seri
Bibliography:Application Number: CN201910919324