Integrated in MAIN domain: one instance of DDR
Subsystem (DDRSS) is used as an interface to external RAM devices which can be
utilized for storing program or data. DDRSS provides the following main features:
- Support of DDR4 / LPDDR4 memory
types
- 16-bit memory bus interface with
in-line ECC
- System bus interface: little
Endian only with 128-bit data width
- Configuration bus Interface:
little Endian only with 32-bit data width
- Support of dual rank
configuration
- Support of automatic idle power
saving mode when no or low activity is detected
- Class of Service (CoS) - three
latency classes supported
- Prioritized refresh
scheduling
- Statistical counters for
performance management
For more information, see DDR Subsystem (DDRSS) section in Peripherals chapter in the device TRM.