Datasheet

267
SAM9G45 [DATASHEET]
Atmel-6438O-ATARM-SAM9G45-Datasheet_08-Dec-15
21.8.8 DDRSDRC Memory Device Register
Name: DDRSDRC_MD
Address: 0xFFFFE620 (0), 0xFFFFE420 (1)
Access: Read/Write
This register can only be written if the bit WPEN is cleared in “DDRSDRC Write Protect Mode Register” on page 271.
• MD: Memory Device
Indicates the type of memory used.
Reset value is for SDR-SDRAM device.
000: SDR-SDRAM
001: Low-power SDR-SDRAM
010: Reserved
011: Low-power DDR1-SDRAM
110: DDR2-SDRAM
• DBW: Data Bus Width
Reset value is 16 bits.
0: Data bus width is 32 bits (reserved for SDR-SDRAM device).
1: Data bus width is 16 bits.
31 30 29 28 27 26 25 24
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23 22 21 20 19 18 17 16
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15 14 13 12 11 10 9 8
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76543210
–––DBW– MD