ASROCK H81 Pro BTC User Manual page 50

tWRRDDR
Configure between module write to read delay from different ranks.
tWRRDDD
Use this to change DRAM tRRSR Auto/Manual settings. The default is [Auto].
Configure between module write to read delay from different DIMMs.
tWRWR
Configure between module write to write delay.
tWRWRDR
Configure between module write to write delay from different ranks.
tWRWRDD
Configure between module write to write delay from different DIMMs.
tRDWR
Configure between module read to write delay.
tRDWRDR
Configure between module read to write delay from different ranks.
tRDWRDD
Configure between module read to write delay from different DIMMs.
RTL (CHA)
Configure round trip latency for channel A.
RTL (CHB)
Configure round trip latency for channel B.
IO-L (CHA)
Configure IO latency for channel A.
IO-L (CHB)
Configure IO latency for channel B.
ODT WR (CHA)
Configure the memory on die termination resistors' WR for channel A.
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