Cypress Perform

Answer: Yes, the external pull-up resistor is not required as ODT is enabled on the data input pins, BWSb, and K/Kb clocks.

An external pull-up resistor to Vt = Vddq/2 is normally recommended termination scheme for HSTL inputs for better signal integrity at high switching speeds. However, in ODT enabled devices, the termination is available internal to the die, for the input signals such as D bus, BWSb, and K/Kb clocks. So there is no need for external pull-up on these signals.

For more information, refer to the Application Note AN42468 - On-Die Termination for QDRII+/DDRII+ SRAMs.