同步的EMIF是速度很快,但是异步的慢,但是我看了一下6455的EMIF好像同时支持同步和异步
EMIFA can interface to a variety of external devices or ASICs, including:
• Pipelined and flow-through Synchronous-Burst SRAM (SBSRAM)
• ZBT (Zero Bus Turnaround) SRAM and Late Write SRAM
• Synchronous FIFOs
• Asynchronous memory, including SRAM, ROM, and Flash
您好,请问EMIF时钟和EMIF速率转换的具体公式是什么