Owner manual

ASUS CUBX User’s Manual58

4. BIOS SETUP

Chip Configuration

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].

4.4.1 Chip Configuration

(scroll down to see more items, as shown here)