CRC in Cyclone V Devices

Hi David,

After checking with engineering below is the answer.

--> Where is it defined?

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.

--> Can you please clarify or give me an example, e.g. for the Cyclone V E A9. Therefore Tmin = 23ms and Tmax is 13.93s. So, how to calculate the minimum and maximum time for CRC of the whole device?

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

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

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

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).

Thanks.

John Tio