Probably that with the larger number? ;-)
You are in the wrong forum here, we are talking about Cypress semiconductors integrated circuits, not diagnostic tools for cars.
Thank you bob,
I just wanted to know the difference between the 2 circuits (speed.. etc)
You should post this in USB forum.
Both of AN2131qc chip and AN21355SC chip are obsolete long time ago.
It is recommended for you to select CY7C68013 or CY764713 to replace them.
Merci Emily :-)))