Hi， Lars：
In IP core axi_adc_2c, I removed the dma module, and extract the sample data(adc data) out directly, then connect to other IP core in which sample data is processed by DDC(Digital Down-Converter) from 163.84Msps to 81.92Msps.
The address of AXI I2C core in XPS is the same with the xparamerter.h in SDK. Both are 0x4080000~0x4080FFFF.