Цитата(bekor @ Jan 10 2011, 04:39)

в даташите на мк написано что организация памяти должна быть 4 битная для SDRAM
а у меня вроде 8 битная

XMEGA A MANUAL (Rev H) ->24. EBI - External Bus Interface -> 24.8 SDRAM ConfigurationChip Select 3 on the EBI can be configured from SDRAM operation, and the EBI must be config-
ured for 3-Port or 4-Port interface.
The SDRAM can be configured for 4-bit or 8-bit data bus, and
4-Port interface must be used for 8-bit data bus. The SDRAM interface signals from the EBI to
the SDRAM is listed in Table 24-2 on page 273.