请教Spartan6里硬核DDR2内存控制器问题!!
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请教Spartan6里硬核DDR2内存控制器问题!!
我打算用Spartan6内嵌的硬核去控制DDR2 内存,在MIG里产生了memoryInterface,然后自己写顶层模块,调用MIG产生的控制模块,并添加了MIG自动生成的UCF文件,综合可以通过,但是Map过不了,报错如下:ERRORlace:1333 - Following IOB's that have input/outputprogramming are locked to the bank 1 that does not support suchvalues IO Standard: Name = LVDS_25, VREF = NR, VCCO = 2.50, TERM =NONE, DIR = BIDIR, DRIVE_STR = NR List of locked IOB's:
mcb4_dram_udqs
mcb4_dram_dqs
mcb4_dram_dqs_n
mcb4_dram_udqs_n
对mcb4_dram_udqs,mcb4_dram_dqs,mcb4_dram_dqs_n,mcb4_dram_udqs_n这几个信号IO口位置的分配和类型的定义是按照MIG自动生成的ucf文件来的,应该不会有错的呀?我用的是ISE12.1,这个问题在网上也有人问过,但是没有说具体的解决方法,麻烦大家帮忙看看,谢谢! |
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