TMS320DM335_09 Datasheet, PDF (105/155 Pages) Texas Instruments – Digital Media System-on-Chip (DMSoC)

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TMS320DM335
Digital Media System-on-Chip (DMSoC)
SPRS528B – JULY 2008 – REVISED JANUARY 2009
5.7 External Memory Interface (EMIF)
DM335 supports several memory and external device interfaces, including:
• Asynchronous EMIF (AEMIF) for interfacing to SRAM.
– OneNAND flash memories
– NAND flash memories
• DDR2/mDDR Memory Controller for interfacing to SDRAM.
5.7.1 Asynchronous EMIF (AEMIF)
The EMIF supports the following features:
• SRAM, etc. on up to 2 asynchronous chip selects addressable up to 64KB each
• Supports 8-bit or 16-bit data bus widths
• Programmable asynchronous cycle timings
• Supports extended wait mode
• Supports Select Strobe mode
5.7.1.1 NAND (NAND, SmartMedia, xD)
The NAND features of the EMIF are as follows:
• NAND flash on up to 2 asynchronous chip selects
• 8 and 16-bit data bus widths
• Programmable cycle timings
• Performs 1-bit and 4-bit ECC calculation
• NAND Mode also supports SmartMedia/SSFDC (Solid State Floppy Disk Controller) and xD memory
cards
5.7.1.2 OneNAND
The OneNAND features supported are as follows.
• NAND flash on up to 2 asynchronous chip selects
• Only 16-bit data bus widths
• Supports asynchronous writes and reads
• Supports synchronous reads with continuous linear burst mode (Does not support synchronous reads
with wrap burst modes)
• Programmable cycle timings for each chip select in asynchronous mode
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DM335 Peripheral Information and Electrical Specifications 105