ADDR_EXT Field

Zynq UltraScale+ Device Technical Reference Manual (UG1085)

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

The 16-bit address extension is used for the NEXT_ADDR_EXT and SRC_ADDR_EXT addresses. This field is used with the NEXT DSCR and SRC ADDR field to generate 48-bit address.

 

IMPORTANT:   The following addresses must be 256-byte aligned.

The DPDMA uses the NEXT_ADDR address for the next descriptor fetch if the LAST_DSCR is not set.

Start address (SRC_ADD) of the data payload.

The 16-bit address extension (ADDR_EXT_23) is for the SRC_ADDR2_EXT and SRC_ADDR3_EXT addresses. This field is used with the following fields to generate a 48-bit address.

The 16-bit address extension (ADDR_EXT_45) is for the SRC_ADDR4_EXT and SRC_ADDR5_EXT addresses. This field is used with the following fields to generate a 48-bit address.