Hi everybody, My question concerns DCI and temperature. If the temperature of the chip changes considarably between the end of the init process and the normal functionning, is it a good idea to instantiate the DCIRESET and reset the DCI after some time after the init? does it help to increase the data window?
Mehdi
Mehdi,
DCI is a feedback system, so as long as it is running, it is tracking (correcting).
The only time when you might reset the DCI block, would be if you don't like to see the DCI correction value noise (as the legs of the fine trims are switched in and out) and have selected to turn off the DCI tracking feedback.
Generally speaking, a well designed interface should work even with a
2:1 mis-match (logic is only knowing the difference between a 1 and a 0 after all).Once the DCI has locked, changing temperature from -55C to +125C is not going to get even close to exceeding the 2:1 mis-match.
Austin
Have something to add? Share your thoughts — no account required.
Ask the community — no account required