Fox Central Control Unit - Foxconn H55A Series User Manual

fox Central Control Unit

CMOS Setup Utility - Copyright (C) 1985-2009, American Megatrends, Inc.
► CPU Configuration
CPU Clock
Ratio CMOS Setting
Adjust VTT Voltage
Ration Staus: Unlocked (Min:09, Max:22)
Ration Actual Value:16
DRAM Frequency
Memory Timing by SPD
Adjust DRAM Voltage
Current DRAM Speed
↑↓←→:Move Enter:Select
► CPU Configuration
Press <Enter> to go to relative submenu.
► CPU Clock
This item is used to adjust the CPU Clock.
► Ratio CMOS Setting
This item is used to set the ratio between CPU Core Clock and the FSB Frequency. You can
use [+] or [-] to adjust the value.
► Adjust VTT Voltage
This item is used to set the CPU VTT voltage.
► DRAM Frequency
This item is used to adjust the memory speed. Select [Auto] for SPD enable mode. You can
select a value manually such as [800 MHz], [1067 MHz] and [1333MHz]..
► Memory Timing by SPD
This item is used to enable/disable provision of DRAM timing by SPD device. The Serial
Presence Detect (SPD) device is a small EEPROM chip, mounted on a memory module. It
contains important information about the module's speed, size, addressing mode and various
other parameters, so that the motherboard memory controller (chipset) can better access the
memory device.
Select [Auto] for SPD enable mode.
Select [Manual] to set the parameters by yourself.
The following 10 settings are valid only when the Memory Timing by SPD is set to [Manual].
► DRAM tCL
The number of memory clocks it takes a DRAM to return data after the read CAS_L is assert-
ed depends on the memory clock frequency. The value that BIOS programs into the memory
controller is a function of the target clock frequency. The target clock frequency is determined
from the supported CAS latencies at given clock frequencies of each DIMM.
► DRAM tRAS (Active-to-Precharge Delay)
This item allows you to set the minimum RAS# active time (in clock cycles).
► DRAM tRP (Precharge Command Period)
Fox Central Control Unit
[Press Enter]
[Press Enter]
[133]
[22]
[Disabled]
[Auto]
[Auto]
[Disabled]
:1333MHz
+/-/:Value F10:Save ESC:Exit
F9:Optimized Defaults
27
Help Item
Configure CPU.
F1:General Help