6.11 DDR2/mDDR Memory Controller
The DDR2/mDDR Memory Controller is a dedicated interface to DDR2/mDDR SDRAM. It supports JESD79-2A standard compliant DDR2 SDRAM devices and compliant Mobile DDR SDRAM devices.
The DDR2/mDDR Memory Controller support the following features:
- JESD79-2A standard compliant DDR2 SDRAM
- Mobile DDR SDRAM
- 256 MByte memory space for DDR2
- 256 MByte memory space for mDDR
- CAS latencies:
- DDR2: 2, 3, 4 and 5
- mDDR: 2 and 3
- Internal banks:
- DDR2: 1, 2, 4 and 8
- mDDR:1, 2 and 4
- Burst length: 8
- Burst type: sequential
- 1 chip select (CS) signal
- Page sizes: 256, 512, 1024, and 2048
- SDRAM autoinitialization
- Self-refresh mode
- Partial array self-refresh (for mDDR)
- Power down mode
- Prioritized refresh
- Programmable refresh rate and backlog counter
- Programmable timing parameters
- Little endian