Intel BLKD865PERL Product Specification - Page 112
Table 66., Chipset Configuration Submenu
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Intel Desktop Board D865PERL Technical Product Specification Table 66. Chipset Configuration Submenu (continued) Feature Extended Configuration SDRAM Frequency (Note 1) CPC Override SDRAM Timing Control (Note 1) SDRAM RAS Active to Precharge (Note 4) SDRAM CAS# Latency (Note 4) SDRAM RAS# to CAS# Delay (Note 4) SDRAM RAS# Precharge (Note 4) Options Description • Default (default) Allows the setting of extended configuration options. • User Defined • Auto (default) Allows override of the detected memory frequency. • 266 MHz • 333 MHz (Note 2) • 400 MHz (Note 3) NOTE: If SDRAM Frequency is changed, you must reboot for the change to take effect. After changing this setting and rebooting, the System Memory Speed parameter in the Main menu will reflect the new value. • Auto (default) Controls the CPC/1n rule mode. • Enabled • Disabled Enabled allows the DRAM controller to attempt chip select assertions in two consecutive common clocks. • Auto (default) • Manual - Aggressive • Manual - User Defined Auto = Timings will be programmed according to the memory detected. Manual - Aggressive = Selects most aggressive user-defined timings. Manual - User Defined = Allows manual override of detected SDRAM settings. • 8 Corresponds to tRAS. • 7 • 6 (default) • 5 • 2.0 • 2.5 (default) Selects the number of clock cycles required to address a column in memory. • 3.0 • 4 • 3 (default) Selects the number of clock cycles between addressing a row and addressing a column. • 2 • 4 • 3 (default) Selects the length of time required before accessing a new row. • 2 Notes: 1. This feature is displayed only if Extended Configuration is set to User Defined. 2. This option is displayed only if the installed processor has a 533 MHz system bus. 3. This option is displayed only if the installed processor has an 800 MHz system bus. 4. This feature is displayed only if SDRAM Timing Control is set to Manual - User Defined. 112
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