Chip Configuration - Asus CUBX User Manual

4. BIOS SETUP

4.4.1 Chip Configuration

(scroll down to see more items, as shown here)
SDRAM Configuration [By SPD]
This sets the optimal timings for items 2–5, depending on the memory mod-
ules that you are using. The default setting is [By SPD], which configures
items 2–5 by reading the contents in the SPD (Serial Presence Detect) de-
vice. The EEPROM on the memory module stores critical parameter infor-
mation about the module, such as memory type, size, speed, voltage inter-
face, and module banks. Configuration options: [User Define] [7ns
(143MHz)] [8ns (125MHz)] [By SPD]
SDRAM CAS Latency
This controls the latency between the SDRAM read command and the time
that the data actually becomes available. NOTE: To make changes to this
field, the SDRAM Configuration field must be set to [User Define].
SDRAM RAS to CAS Delay
This controls the latency between the SDRAM active command and the
read/write command. NOTE: To make changes to this field, the SDRAM
Configuration field must be set to [User Define].
SDRAM RAS Precharge Time
This controls the idle clocks after issuing a precharge command to the
SDRAM. NOTE: To make changes to this field, the SDRAM Configura-
tion field must be set to [User Define].
58 ASUS CUBX User's Manual