Via EPIA-EK10000G User Manual - Page 68

SDRAM CAS Latency, Bank Interleave, Precharge to Active Trp, Active to Precharge Tras, Active to CMD

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Chapter 3 SDRAM CAS Latency This item is for setting the speed it takes for the memory module to complete a command. Generally, a lower setting will improve the performance of your system. However, if your system becomes less stable, you should change it to a higher setting. This field is only available when "DRAM Timing" is set to "Manual". Settings: [1.5, 2, 2.5, 3] Bank Interleave This item is for setting the interleave mode of the SDRAM interface. Interleaving allows banks of SDRAM to alternate their refresh and access cycles. One bank will undergo its refresh cycle while another is being accessed. This improves performance of the SDRAM by masking the refresh time of each bank. This field is only available when "DRAM Timing" is set to "Manual". Settings: [Disabled, 2 Bank, 4 Bank] Precharge to Active (Trp) This field is for setting the length of time it takes to precharge a row in the memory module before the row becomes active. Longer values are safer but may not offer the best performance. This field is only available when "DRAM Timing" is set to "Manual". Settings: [2T, 3T, 4T, 5T] Active to Precharge (Tras) This field is for setting the length of time it a row stays active before precharging. Longer values are safer but may not offer the best performance. This field is only available when "DRAM Timing" is set to "Manual". Settings: [6T, 7T, 8T, 9T] Active to CMD (Trcd) This field is only available when "DRAM Timing" is set to "Manual". Settings: [2T, 3T, 4T, 5T] 60

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Chapter 3
60
SDRAM CAS Latency
This item is for setting the speed it takes for the memory module to complete
a command.
Generally, a lower setting will improve the performance of your
system.
However, if your system becomes less stable, you should change it
to a higher setting.
This field is only available when “DRAM Timing” is set to
“Manual”.
Settings: [1.5, 2, 2.5, 3]
Bank Interleave
This item is for setting the interleave mode of the SDRAM interface.
Interleaving allows banks of SDRAM to alternate their refresh and access
cycles.
One bank will undergo its refresh cycle while another is being
accessed.
This improves performance of the SDRAM by masking the refresh
time of each bank.
This field is only available when “DRAM Timing” is set to
“Manual”.
Settings: [Disabled, 2 Bank, 4 Bank]
Precharge to Active (Trp)
This field is for setting the length of time it takes to precharge a row in the
memory module before the row becomes active.
Longer values are safer but
may not offer the best performance.
This field is only available when “DRAM
Timing” is set to “Manual”.
Settings: [2T, 3T, 4T, 5T]
Active to Precharge (Tras)
This field is for setting the length of time it a row stays active before
precharging.
Longer values are safer but may not offer the best performance.
This field is only available when “DRAM Timing” is set to “Manual”.
Settings: [6T, 7T, 8T, 9T]
Active to CMD (Trcd)
This field is only available when “DRAM Timing” is set to “Manual”.
Settings: [2T, 3T, 4T, 5T]