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Don't we need to control impedance in short tracks in DDR memory layout ?

Question asked by Peter Amond on Apr 19, 2018
Latest reply on Apr 24, 2018 by Artur Petukhov

Hi All,


This is regarding iMAX6Q related DDR memory layout. 


According to routing recommendations we need to control single ended signals and data signals up to 50 Ohms.

1) Do we need to control impedance of short single ended tracks like follow ? 

Track length = 0.566mm



2) What will happen some of those short tracks were controlled impedance and some of those short tracks were NOT ?