AM1705 Datasheet, PDF (58/155 Pages) Texas Instruments – AM1705 ARM Microprocessor

AM1705
SPRS657 – FEBRUARY 2010
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6.11 External Memory Interface A (EMIFA)
EMIFA is one of two external memory interfaces supported on the device . It supports asynchronous
memory types, such as NAND and NOR flash and Asynchronous SRAM.
6.11.1 EMIFA Asynchronous Memory Support
EMIFA supports asynchronous:
• SRAM memories
• NAND Flash memories
• NOR Flash memories
The device supports up to 13 address lines and an external wait/interrupt input. Up to 2 asynchronous
chip selects are supported by EMIFA (EMA_CS[3:2]) .
Each chip select has the following individually programmable attributes:
• Data Bus Width
• Read cycle timings: setup, hold, strobe
• Write cycle timings: setup, hold, strobe
• Bus turn around time
• Extended Wait Option With Programmable Timeout
• Select Strobe Option
• NAND flash controller supports 1-bit and 4-bit ECC calculation on blocks of 512 bytes.
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Peripheral Information and Electrical Specifications
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