求教各位大神，如何实现数据位宽转换啊。。。

zhangbinsniper

You should use one 256bits double port RAM to transform data between two clocks region. Since the clock frequency of GTX side is higher than DDR3 side. So this double RAM is needed to design as gearbox function. As I know, there is one gearbox module at inner of GTX PCS part. So you can use this function to realize similar function. But at your description, i didn't know the data rate of DDR3 and line rate of GTX, so i can't supply the detail parameter of this gearbox. It needed you to compute them by yourself.