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MS-7181 Micro-ATX Mainboard
Min RAS# Active Time (Tras)
When the Timing Mode is set to [Manual], the field is adjustable. This setting
determines the time RAS takes to read from and write to a memory cell. Setting
options: [Auto], [5T~15T].
RAS# to CAS# Delay (Trcd)
When the Timing Mode is set to [Manual], the field is adjustable. When DRAM
is refreshed, both rows and columns are addressed separately. This setup item
allows you to determine the timing of the transition from RAS (row address
strobe) to CAS (column address strobe). The less the clock cycles, the faster
the DRAM performance. Setting options: [Auto], [2T~7T].
Row Precharge Time (Trp)
When the Timing Mode is set to [Manual], the field is adjustable. This item
controls the number of cycles for Row Address Strobe (RAS) to be allowed to
precharge. If insufficient time is allowed for the RAS to accumulate its charge
before DRAM refresh, refreshing may be incomplete and DRAM may fail to retain
data. This item applies only when synchronous DRAM is installed in the system.
Setting options: [Auto], [2T~7T].
Row to Row delay (Trrd)
When the Timing Mode is set to [Manual], the field is adjustable. Specifies the
active-to-active delay of different banks. Setting options: [Auto], [2T], [3T], [4T].
1T/2T Memory Timing
This setting controls the SDRAM command rate. Selecting [Auto] allows SDRAM
signal controller to run at 1T (T=clock cycles) rate. Selecting [1T] makes SDRAM
signal controller run at 2T rate. 1T is faster than 2T. Setting options: [1T], [2T].
LDT & PCI Bus Control
Press <Enter> to enter the sub-menu and the following screen appears:
Upstream / Downstream LDT Bus Width
These two item control the utilized widths of the HyperTransport link. Setting
options: [8 bit], [16 bit].
LDT Bus Frequency
This item specifies the maximum operating frequency of the link's transmitter
clock. Setting options: [Auto], [800 MHz], [600 MHz], [400 MHz], [200 MHz].