ASRock N100M Software/BIOS Setup Guide - Page 29

Write to Read Delay tWTR_L

Page 29 highlights

Intel N100 Series Refresh Cycle Time 2 (tRFC) The number of clocks from a Refresh command until the first Activate command to the same rank. RAS to RAS Delay (tRRD_L) The number of clocks between two rows activated in different banks of the same rank. RAS to RAS Delay (tRRD_S) The number of clocks between two rows activated in different banks of the same rank. Write to Read Delay (tWTR_L) The number of clocks between the last valid write operation and the next read command to the same internal bank. Write to Read Delay (tWTR_S) The number of clocks between the last valid write operation and the next read command to the same internal bank. Read to Precharge (tRTP) The number of clocks that are inserted between a read command to a row pre-charge command to the same rank. Four Activate Window (tFAW) The time window in which four activates are allowed the same rank. CAS Write Latency (tCWL) Configure CAS Write Latency. Third Timing tREFI Configure refresh cycles at an average periodic interval. tCKE Configure the period of time the DDR4 initiates a minimum of one refresh command internally once it enters Self-Refresh mode. tRC Configure the minimum active to active/Refresh Time. 25

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25
Intel N100 Series
Refresh Cycle Time 2 (tRFC)
°e number of clocks from a Refresh command until the first Activate command to the
same rank.
RAS to RAS Delay (tRRD_L)
°e number of clocks between two rows activated in different banks of the same rank.
RAS to RAS Delay (tRRD_S)
°e number of clocks between two rows activated in different banks of the same rank.
Write to Read Delay (tWTR_L)
°e number of clocks between the last valid write operation and the next read command to
the same internal bank.
Write to Read Delay (tWTR_S)
°e number of clocks between the last valid write operation and the next read command to
the same internal bank.
Read to Precharge (tRTP)
°e number of clocks that are inserted between a read command to a row pre-charge
command to the same rank.
Four Activate Window (tFAW)
°e time window in which four activates are allowed the same rank.
CAS Write Latency (tCWL)
Configure CAS Write Latency.
Third Timing
tREFI
Configure refresh cycles at an average periodic interval.
tCKE
Configure the period of time the DDR4 initiates a minimum of one refresh command
internally once it enters Self-Refresh mode.
tRC
Configure the minimum active to active/Refresh Time.