Had the honor of Mir Z-turn Board of trial experience, Z-turn Board is using xilinx zynq7020 series processors designed a FPGA + ARM embedded board. I try to share the following notes: PS STLM75 using the AXI interface to read and XADC.
Since the iic Zturn temperature sensor connected to the PL, so the use of AXI interface AXI IIC IP. 
xilinx of AXI IIC's IP is very rich, is also more complicated, this may be the reason we are reluctant to use. Usually use Verilog or VHDL write IIC timing.
Well, that's PS STLM75 use AXI interface to read and XADC. Summary: The development board based on xilinx zynq7020 was quite good, high-performance, low-power, low cost, we can play.