CRC in Cyclone V Devices

Hi John,

thank's for your answer. I think, there are a few typos in your answer. This is, why I ask again…

Setting can be change as the oscillator is fixed. The frequency will varies from device to device and it will be between from 42.6Mhz to 100Mhz.

--> I think, you mean "Setting cannot be change as the oscillator is fixed.", right?

There is error on the calculation of the minimum time where the bracket should be there.

--> So, I assume, the right formula is as shown above, can you confirm?

The Table 106 is showing the time for full device CRC calculation.

--> What do you mean with "Table 106"? I guess, you are talking about "Table 8-3: Device EDCRC Detection Time in Cyclone V Devices". Can you confirm?

--> So, I understand, that this table already shows the minimum and maximum detection time for CRC errors in the whole device and I don't have to calculate those numbers. Did I get this right?

So the Tmax is calcluated based on the maximum divisor factor of n = 8. So 13.93s = 2^(8-8)*13.93s.

--> Ok.

The Tmin is calculated based on the minimum divisor factor based on the device minimum divisor setting supported. For Cyclone V E A9 then it will be 23s = 2^0 / 1 * 23. The value Divisor Setting is 2 ^ n. So n = 0 when the divisor setting is 1 ( 2^0 = 1).

--> The result is 23ms and not 23s, right? I have to be very sure, that I get this right...

Thanks and best Regards,

David