The TRM has two statements of when the initialization of the SDRAM occurs. Page 1050 states on the SDRAM_CONFIG "A write to this register will cause the EMIF to start the SDRAM initialization sequence for DDR2." On page 1052 for the SDRAM_REF_CTRL it states "A write to this field will cause the EMIF to start the SDRAM initialization sequence."
Is the first statement saying that the initialization will *only* occur if the SDRAM type is set to DDR2? (i.e. and *not* for LPDDR?). If so, presumably the register order must vary between DDR2 and LPDDR.
If not, and either register initiates the SDRAM initialization (and both of these register do contain fields the LPDDR needs), what happens? Two initialization sequences? will they be spaced correctly?
Or perhaps the SDRAM_CONFIG inits the SDRAM MODE register, and the SDRAM_REF_CTRL inits the SDRAM EXT MODE register?
Thanks ... Jim