1 Reply Latest reply on Jan 2, 2014 12:29 AM by adithi.perepu

    Read latency on CYF0018V

    hiroyasu.koike
              I read the datasheet and understood the latency is four. But does anyone know which is correct, Dval#1 or DVal#2 for attached image?   
        • 1. Re: Read latency on CYF0018V
          adithi.perepu

          Hi Koike,

             

          The MPN you  have mentioned (CYF0018V) is a single queue 18Meg HDFIFO device which has a single DVal signal. The device supports a read latency of 4.

             

          In the waveform you have provided, after REN is enabled, clock cycle 1 is when the HDFIFO will register the first read request. With respect to this clock edge, "DVal#2" in the waveform you have provided, is the correct interpretation of device operation.

             

          Please let us know if any further clarification is required in this regard.

             

          Thanks & Regards,

             

          Adithi Murthy Perepu