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Anonymous
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        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?   
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AdithiP_46
Employee
Employee
5 replies posted First question asked First solution authored

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

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AdithiP_46
Employee
Employee
5 replies posted First question asked First solution authored

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

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