The following figure shows an example of the AXI Chip2Chip use case with SelectIO PHY.
In this use case, a Kintex 7 device implementing a PCIe® Peripheral Master is connected to a Zynq 7020 device over an AXI4 interface. Because it implements the Peripheral Master on the Chip2Chip AXI interface, the Kintex 7 device is the Master device. Because it implements an AXI DDR Memory slave, the Zynq 7020 device is the Slave device. In this use case, the processing subsystem in the Zynq 7020 device uses the AXI4-Lite interface of the Chip2Chip core to access the control and status registers of the Peripheral Master in the Kintex 7 device.
The PCIe Peripheral Master uses the AXI interface of the Chip2Chip core for writing and reading data from the DDR memory connected to the Zynq 7020 device. The PCIe Master in this case uses the Chip2Chip core interrupt signaling to trigger any PCIe interrupt service routines in the host processor.