Hi,
As per the datasheet page no 14, JEDEC VTT specifications for DDR and DDR2 (JEDEC standard: DDR JESD8-9B May 2002; DDR2 JESD8-15A Sept 2003) mentioned as
VVTTREF – 40 mV < VVTT < VVTTREF + 40 mV
Is this limits +/-40mV still applicable for DDR4 too. Please confirm?