我只知道AU1200是支持DDRII的,可惜他是MIPS的,我不喜欢,不知道ARM是否有支持DDRII的没?
目前ARM架构的CPU的确没有支持DDR2的。
Centrality（就是被Sirf收购的）和三星的07年下半年倒是说过下一代会支持DDR2，但是因为我们的平台没有那么快的升级需求，所以也没继续关注。
2450已经量产了吗？现在主推的好像是ARM11的6400。
LZ看一下sigma designs有没。好像有的。
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
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