The EMIF controller includes many
features to enhance the ease and flexibility of connecting to the external SDR SDRAM
and asynchronous devices.
- Accessible by all CPUs, RTDMA1,
and RTDMA2
- Fast port access from
primary CPU, slow port access from other CPUs and RTDMA
- RTDMA burst support
- Separate buffer module for each
CPU with a write FIFO that contains up to 4 entries
- EMIF splits accesses based on
data size
- 64-bit access causes two
32-bit accesses
- Arbitration for same and
different initiators
- Supports single chip select for
SDRAM, three chip selects for ASRAM, and an additional range for EMIF register
accesses