FPD and LPD DMAs

Zynq UltraScale+ Device Technical Reference Manual (UG1085)

Document ID
UG1085
Release Date
2022-09-15
Revision
2.3 English

This Figure shows one use case of the LPD and FPD DMA units for the following scenarios.

The FPD DMA unit for data movement between the DDR memory controller in the PS FPD and block RAM in the PL where the APU manages the FPD DMA unit and the M_AXI_HPM{0,1}_FPD interface is used for connectivity into the PL.

The LPD DMA unit for data movement between the OCM memory in the PS LPD and block RAM in the PL where the RPU manages the LPD DMA unit and HPM0_LPD interface is used for connectivity with the PL.

Figure 35-5:      DMA Masters

X-Ref Target - Figure 35-5

X2102700249.jpg

While the FPD DMA unit can be used for the OCM memory to PL block RAM transfers and the LPD DMA unit can be used for the DDR memory controller to PL block RAM transfers, the use case in this section is an example of how the LPD can operate independently when the FPD is powered down.