22 User's Manual
3.7 Chipset Features Setup
Auto Configuration
This item auto configure the following items: DRAM RAS# Precharge time, DRAM R/W
Leadoff Timing, Fast RAS to CAS Delay, DRAM Read Burst, DRAM Write Burst Timing,
Fast MA to RAS# Delay CLK, Fast EDO Path Select, Refresh RAS# Assertion, and ISA Bus
Clock by different system clock.
DRAM Timing
This item set the DRAM Read/Write timings that the system uses. When item of "Auto
Configuration" is disabled, this item will not show up.
DRAM RAS# Precharge Time
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 Row Address Strobe to accumulate its charge
before the DRAM is refreshed. If insufficient time is allowed, refresh may be incomplete
and data lost.
This item sets the DRAM RAS Precharge Timing. The options are
4
and
3
CLKs.
DRAM R/W Leadoff Timing
This item sets the number of CPU clocks allowed before reads and writes to DRAM are
performed.
7/6 : Seven clocks leadoff for reads and six clocks leadoff for writes.
6/5 : Six clocks leadoff for reads and five clocks leadoff for writes.
