ASRock H87M-ITX User Manual - Page 65
tREFI, tRDRD, tWRRD, RTL CHA, Configure between module write to write delay.
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H87M-ITX tREFI Configure refresh cycles at an average periodic interval. tCKE Configure the period of time the DDR3 initiates a minimum of one refresh command internally once it enters Self-Refresh mode. tRDRD Configure between module read to read delay. tRDRDDR Configure between module read to read delay from different ranks. tRDRDDD Use this to change DRAM tRWSR Auto/Manual settings. The default is [Auto]. tWRRD Configure between module write to read delay. 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. RTL (CHA) Configure round trip latency for channel A. RTL (CHB) Configure round trip latency for channel B. 61 English