Rainbow Electronics AT91CAP9S250A - Manual (Page 242)

242
6264A–CAP–21-May-07
AT91CAP9S500A/AT91CAP9S250A
23.6.7 DDRSDRC Memory Device Register
Register Name: DDRSDRC_MD
Access Type: Read/Write
Reset Value: See Table 23-8
• MD memory device
Indicates the type of memory used.
Reset value is for SDR-SDRAM device.
00: SDR-SDRAM
01: Mobile SDR-SDRAM 1
10: DDR-SDRAM
11: Mobile DDR-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
– – – – – – – –
23 22 21 20 19 18 17 16
– – – – – – – –
15 14 13 12 11 10 9 8
– – – – – – – –
7 6 5 4 3 2 1 0
– – – DBW – – MD