Mainboard User’s Manual
48
K
CAS# Latency: This item sets a timing parameter for the Column
Address Strobe memory access. Leave this item at the default
setting “3” so that the system autodetects the correct timing.
K
Paging Mode Control: This item allows you to enable and disable
page open mode. If set to “open,” the GMCH memory controller
tends to leave the page open.
K
RAS-to-CAS Override: This item sets the timing parameters for
the system memory such as the CAS (Column Address Strobe) and
RAS (Row Address Strobe). We recommend that you set RAS-to-
CAS to “byCAS# LT” (default) so that the memory timing is
automatically detected.
K
RAS# Timing: Sets the Row Address Strobe (RAS) timing. Leave
this at the default setting “Fast.”
K
RAS# Precharge Timing: DRAM must continually be refreshed
or it will lose its data. Normally, DRAM is refreshed entirely as the
result of a single request. This option allows you to determine the
number of CPU clocks allocated for the Row Address Strobe
(RAS) to accumulate its charge before the DRAM is refreshed. If
insufficient time is allowed, refresh may be incomplete and data
lost. Options are “Slow” and “Fast” (default).
Advanced Chipset Features
