ASROCK Taichi Ultimate Z390 Manual page 77

ODT WR (B2)
Configure the memory on die termination resistors' WR for channel B2.
ODT NOM (A1)
Use this to change ODT (CH A1) Auto/Manual settings. The default is [Auto].
ODT NOM (A2)
Use this to change ODT (CH A2) Auto/Manual settings. The default is [Auto].
ODT NOM (B1)
Use this to change ODT (CH B1) Auto/Manual settings. The default is [Auto].
ODT NOM (B2)
Use this to change ODT (CH B2) Auto/Manual settings. The default is [Auto].
ODT PARK (A1)
Configure the memory on die termination resistors' PARK for channel A1.
ODT PARK (A2)
Configure the memory on die termination resistors' PARK for channel A2.
ODT PARK (B1)
Configure the memory on die termination resistors' PARK for channel B1.
ODT PARK (B2)
Configure the memory on die termination resistors' PARK for channel B2.
COMP Setting
RCOMP0: DQ ODT (Read)
Default is 121.
RCOMP1: DQ /CLK Ron (Drive Strength)
Default is 75.
RCOMP2: CMD/CTL Ron (Drive Strength)
Default is 100.
DQ ODT Driving
Adjust ODT Driving for better signal. Default is 60.
70