The S3C2450 Mobile DRAM Controller supports three kinds of memory interface - (Mobile) SDRAM and mobile
DDR and mobile DDR2. Mobile DRAM controller provides 2 chip select signals (2 memory banks), these are used
for up to 2 (mobile) SDRAM banks or 2 mobile DDR banks or 2 mobile DDR2 banks. Mobile DRAM controller
can’t support 3 kinds of memory interface simultaneous, for example one bank for (mobile) SDRAM and one bank
for mobile DDR.
Mobile DRAM controller has the following features:
? Support little endian
? Mobile DDR SDRAM and (Mobile) SDRAM
? Supports 32-bit for SDRAM and 16-bit data bus interface for DDR.
? Address space: up to 512Mbyte
? Supports 2 banks: 2-nCS (chip selection)
? 16-bit Refresh Timer
? Self Refresh Mode support (controlled by power management)
? Programmable CAS Latency
? Provide Write buffer: 8-word size
? Provide pre-charge and active power down mode
? Provide power save mode
? Support extended MRS for mobile DRAM)
可以肯定三星的S3C2450是支持DDR2的,当然,也支持SDRAM, Mobile SDRAM, Mobile DDR。从货源的角度看,还是DDR2牛!可惜的是,2450只支持4 bank架构的DDR2,而不支持8 bank的!目前,4 bank的只到512Mb(64MB),要想容量大,就得用多片!也不知三星怎么想的,唉