The AXI DataMover that is internally used by the AXI CDMA can be optionally programmed to a reduced feature set to provide a reduced resource utilization footprint in the target FPGA (see CDMA resource utilizations here). Using the DataMover Lite operation mode puts restrictions on the available CDMA features. The following is a list of feature restrictions (compared to the Full mode).
•AXI CDMA data transport width is restricted to 32 and 64 bits.
•Maximum Burst Length is restricted to 16, 32, and 64 data beats.
•Maximum allowed bytes to transfer (BTT) value that is programmed per transfer request is limited to the specified maximum burst length times the specified CDMA data width divided by 8.
MAX_BURST_LEN × (AXI_DATA_WIDTH/8)
•The DRE function is not supported with Data Mover Lite.
Note: In case the CDMA is configured in Lite Mode, the 4K address crossing guard must be done by the software application when specifying the Source Address, the Destination Address, and the BTT values programmed into the CDMA registers.