Integrated in MAIN domain one instance of DDR
Subsystem (DDRSS) is used as an interface to external SDRAM devices which can be
utilized for storing program or data. DDRSS provides the following main features:
- Support of LPDDR4 memory
type
- 32-bit memory bus interface
with in-line ECC
- Up to 8 GB memory address
range
- System bus interface: little
endian only with 512-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