Kontron FlexPAC, Руководство пользователя

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CAS Latency Timer
This option selects the CAS latency time in HCLKs of 2/2 or 3/3. The system
board designer has set the values for this option, depending on the DRAM
installed. Do not change the values of this option unless you change the
specifications of the installed DRAM or the installed CPU.
Active to Precharge Delay
This option selects the setting for the Active Precharge Delay.
DRAM RAS# to CAS# Delay
This option allows you to insert a delay between the RAS (Row Address
Strobe) and the CAS (Column Address Strobe) signals. This delay occurs
when the SDRAM is written to, read from or refreshed. Reducing the delay
improves the performance of the SDRAM.
DRAM RAS# Precharge
This option sets the number of cycles required for the RAS (Row Address
Strobe) to accumulate it’s charge before the DRAM refreshes.
DRAM Data Integrity Mode
This BIOS setting is used to configure the RAM’s data integrity mode. ECC
(Error Checking and Correction) should only be used if you are using 72-bit
ECC RAM. This will enable the system to detect and correct single-bit errors.
It will also detect double-bit errors, though it will not correct them. This
option provides increased data integrity and system stability at the expense of
a little speed.
Memory Frequency for 2GHz FlexPAC
This option sets the frequency of the installed DRAM memory. The settings
are Auto, PC100 and PC133.
Memory Frequency for 3GHz FlexPAC
This option sets the frequency of the installed DDR memory. The settings
are Auto, DDR 266 and DDR333.
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Configuration
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