PCIe device, electronic component, electronic device and address mapping method

The invention provides PCIe equipment, an electronic component, electronic equipment and an address mapping method. The PCIe equipment comprises a PCIe controller, an address mapping unit and an on-chip bus, and the PCIe controller comprises a base address register; the PCIe controller is configured to map an initial address carried in a received request into a first address, and send the request carrying the first address to the address mapping unit; the address mapping unit is configured to map a first address into a chip address in a chip address space of a target mapping group under the condition that the first address is matched to the target mapping group, and send a request carrying the chip address to the on-chip bus; the on-chip bus is configured to route the request according to the chip address. Through the PCIe device, the problem that the address mapping segment is insufficient in the Bar enumeration process of the PCIe device can be solved. 本公开提供一种PCIe设备、电子组件、电子设备及地址映射方法，该PCIe设备包括PCIe控制器、地址映射单元、