The EIM module of imx6q uses a 16-bit address line (AD0~AD15),16-bit data line (DA16~DA31), asynchronous mode, the module is connected to FPGA, no matter it is read or write, the information on the data line is valid, but there is always no valid data on the address line, the module is connected to FPGA, no matter it is read or write, the information on the data line is valid, but there is always no valid data on the address line.