Datasheet

EPI CONFIG REG
MODE = SDRAM
SDRAM CFG REG
SDRAM
SIZE
DATA
SIZE
SIZE = 0
SIZE = 1
SIZE = 2
SIZE = 3
64
MBit
128 MBit
256 MBit
512 MBit
16
16
16
16
F28M36P63C, F28M36P53C, F28M36H53C, F28M36H53B, F28M36H33C, F28M36H33B
SPRS825C –OCTOBER 2012–REVISED FEBRUARY 2014 www.ti.com
7.1.4.2 EPI SDRAM Mode
The EPI SDRAM Mode combines high performance, low cost, and low pin utilization to access up to
512 megabits (Mb) of external memory. Main features of the EPI SDRAM interface are:
• Supports x16 (single data rate) SDRAM
• Supports low-cost SDRAMs up to 64 megabytes (MB) [or 512Mb]
• Includes automatic refresh and access to all banks, rows
• Includes Sleep/STANDBY Mode to keep contents active with minimal power drain
• Multiplexed address/data interface for reduced pin count
See Figure 7-9 for a snapshot of the SDRAM Mode registers and supported memory sizes. For more
detailed maps of the SDRAM Mode, see Table 7-5.
Figure 7-9. EPI SDRAM Mode
168 Peripheral Information and Timings Copyright © 2012–2014, Texas Instruments Incorporated
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