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3-8 Chapter 3
3.3. Advanced Chipset Features
DRAM Timing Selectable
This item sets the optimal timings for the following four items, depending on the
memory module you are using. The default setting “By SPD” configures these four
items by reading the contents in the SPD (Serial Presence Detect) device. The
EEPROM on the memory module stores critical parameter information about the
module, such as memory type, size, speed, voltage interface, and module banks.
CAS Latency Time
This item controls the latency between the DRAM read command and the time that
the data becomes actually available.
Act. to Precharge Delay
This item controls the number of DRAM clocks used for the DRAM parameters.
DRAM RAS# to CAS# Delay
This item controls the latency between the DRAM active command and the read/write
command.
DRAM RAS# Precharge
This item controls the idle clocks after issuing a precharge command to the DRAM.
IS-10 / IS-11 / IS-12 / IS-20