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Hi,
if one question about the sdram initialization (micron MT48LC16...) from keil for (all) SAM9 controller AT91SAM9260 / 61 / 63). After the eight auto-refresh commands there's the load mode register command (mode 3).
_WDWORD(SDRAMC+0x00, 0x00000003); // Issue Load Mode Register Command _WDWORD(SDRAM+ 0x24, 0xCAFEDEDE);
The addr of the second-line (0x20000024 = SDRAM + 0x24) describes the burst type and the CAS latency for example. But what about the databus value 0xCAFEDEDE???
I couldn't find any explanation in the micron sdram datasheet as well as in the controller datasheet.
best regards Stefan