IEI Integration IMBA-9454 v1.00 - Manual (Page 170)

IMBA-9454 Motherboard
Page 152
Configure DRAM Timing by SPD configuration option must be set to “Disabled.”
Configuration options are listed below:
2 DRAM Clocks
3 DRAM Clocks
4 DRAM Clocks
5 DRAM Clocks
6 DRAM Clocks D EFAULT
DRAM RAS# Precharge [6 DRAM Clocks]
Use the DRAM RAS# Precharge option to set the speed at which the RAM terminates the
access of one row and start accessing another. To be able to change this configuration
option the Configure DRAM Timing by SPD configuration option must be set to
“Disabled.” The following configuration options are available
2 DRAM Clocks
3 DRAM Clocks
4 DRAM Clocks
5 DRAM Clocks
6 DRAM Clocks D EFAULT
DRAM RAS# Activate to Precha [15 DRAM Clocks]
Use the DRAM RAS# Activate to Precha option to specify the length of the delay
between the activation and precharge commands for the RAS signal. That is how long
after activation can the access cycle be started again. This influences row activation time
that is considered when memory has hit the last column in a specific row, or when an
entirely different memory location is requested. To be able to change this configuration
option the Configure DRAM Timing by SPD configuration option must be set to
“Disabled.” The following configuration options are available:
4 DRAM Clocks
5 DRAM Clocks
6 DRAM Clocks
7 DRAM Clocks