Refer to the PDF data sheet for device specific package drawings
The DDR subsystem in this device comprises DDR controller, DDR PHY and wrapper logic to integrate these blocks in the device. The DDR subsystem is referred to as DDRSS0 and is used to provide an interface to external SDRAM devices which can be utilized for storing program or data. DDRSS0 is accessed via MSMC, and not directly through the system interconnect.
For more information, see DDR Subsystem (DDRSS) section in Peripherals chapter in the device TRM.