Using the BIOS Setup Program
85
Table 28. Chipset Configuration Submenu (continued)
Feature Options Description
Burn-In Mode
• Default (default)
• -2.0%
• -1.0%
• +1.0%
• +2.0%
• +3.0%
• +4.0%
Alters host and I/O clock frequencies.
Extended Configuration
• Default (default)
• User Defined
Chooses the default or user defined settings for
the extended configuration options.
Chipset Memory Timing
Control
No option
SDRAM Frequency
• Auto (default)
• 266 MHz
• 333 MHz
• 400 MHz
Allows override of detected memory frequency
value.
SDRAM Timing Control
• Auto (default)
• Manual – Aggressive
• Manual – User Defined
Auto allows timings to be programmed according
to the memory detected.
Manual – Aggressive selects the most aggressive
user defined timings.
Manual – User Defined allows manual override of
detected SDRAM settings.
CPC Override
• Auto (default)
• Enabled
• Disabled
Controls Command Per Clock/1n rule mode.
When enabled, allows DRAM controller to attempt
Chip Select assertions in two consecutive
common clocks.
SDRAM RAS Act. To Pre.
• 8 (default)
• 7
• 6
• 5
Selects length of time from read to pre-change.
Corresponds to tRAS, min.
SDRAM CAS# Latency
• 2.0
• 2.5
• 3.0 (default)
Selects the number of clock cycles required to
address a column in memory. Corresponds to
CL.
SDRAM RAS# to CAS#
delay
• 4
• 3 (default)
• 2
Selects the number of clock cycles between
addressing a row and addressing a column.
Corresponds to tRCD.
SDRAM RAS# Precharge
• 4
• 3 (default)
• 2
Selects the length of time required before
accessing a new row.
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