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ASUS CUC2000 User’s Manual62
4. BIOS SETUP
4. BIOS SETUP
Chip Configuration
SDRAM Configuration [By SPD]
This sets the optimal timings for items 2–4, depending on the memory modules that
you are using. Default setting is [By SPD], which configures items 2–4 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. Configuration options: [User
Define] [By SPD]
IMPORTANT: It is strongly recommended that you leave this field on its default
setting of [By SPD]. [User Define] should only be used by experienced users.
SDRAM CAS Latency
This controls the latency between the SDRAM read command and the time that
the data actually becomes available. NOTE: This field will only be displayed
when SDRAM Configuration is set to [User Define].
SDRAM RAS to CAS Delay
This controls the latency between the SDRAM active command and the read/
write command. NOTE: This field will only be displayed when SDRAM Con-
figuration is set to [User Define].
SDRAM RAS Precharge Time
This controls the idle clocks after issuing a precharge command to the SDRAM.
NOTE: This field will only be displayed when SDRAM Configuration is set
to [User Define].
4.4.1 Chip Configuration