想用TMS320DM648进行开发设计，请问实际情况下它的DDR2传输速率能达到多大？

本帖最后由 一只耳朵怪 于 2018-6-22 14:13 编辑

想用TMS320DM648进行开发设计，因为设计比较多的DDR2数据读取，担心它的DDR2速率不够，想问一下实际情况下它的DDR2传输速率能达到多大？
datasheet上有这么一句话“The internal data bus clock frequency and DDR2 bus clock frequency directly affect the maximumt hroughput of the DDR2 bus. The data rate of the DDR2 bus is equal to the CLKIN2 frequency multiplied by 20. The internal data bus clock frequency of the DDR2 memory controller is fixed at a divide-by-threeratio of the CPU frequency. The maximum DDR2 throughput is determined by the smaller of the two bus frequencies. For example, if the internal data bus frequency is 300 MHz (CPU frequency is 900 MHz) and the DDR2 data rate is 533 MHz (266 MHz clock rate as CLKIN2 frequency is 26.6 MHz), the maximumdata rate achievable by the DDR2 memory controller is 2.13 Gbytes/sec.”