ZCU106 CDMA problem

PYNQ version:3.0.1
Board name : Zynq UltraScale+MPSOC(ZCU106)
I use CDMA to transfer data between PS DRAM and PL DRAM(DDR4 SDRAM)
and the register map of CDMASR DMADecErr=1, it means DMA decode error.


please help me to solve this problem, thnaks a lot.

dma.pdf (213.4 KB)
CDMA_v2.zip (1.2 MB)