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* DRAM CAS Latency
Enables you to select the CAS latency time in HCLKs of 2/2 or 3/3. The
value is set at the factory depending on the DRAM installed. Do not change
the values in this field unless you change specifications of the installed
DRAM or the installed CPU. The options are "2" and "3" default.
Ø
The choice: 2 or 2.5.
* Bank Interleave
Enable this item to increase memory speed. When enabled, separate
memory banks are set for odd and even addresses and the next byte of
memory can be accessed while the current byte is being refreshed.
Ø
The Choice: Disabled, 2 Bank, or 4 Bank.
* Precharge to Active <Trp>
This item is used to designate the minimum Row Precharge time of the
SDRAM devices on the module. DRAM must continually be refreshed or
it will lose its data. Normally, DRAM is refreshed entirely as the result of a
single request. This option allows you to determine the number of CPU
clocks allocated for the Row Address Strobe (RAS) to accumulate its charge
before the DRAM is refreshed. If insufficient time is allowed, refresh may
be incomplete and data lost.
Ø
The Choice: 2T, 3T, 4T or 5T.
* Active to Precharge <Tras>
This item specifies the number of clock cycles needed after a bank active
command before a pre-charge can occur.
Ø
The choice: 6T or 5T.
* Active to CMD <Trcd>
This item specifies the minimum re-quired delay between activation of
different rows.
Ø
The Choice: 2T or 3T.
* DRAM Command Rate
This item enables you to specify the waiting time for the CPU to issue
the next command af-ter issuing the command to the DDR memory.
We recommend that you leave this item at the default value.
Ø
The Choice: 2T Command or 1T Command.
DRAM Burst Length
This item describes which burst lengths are supported by the devices on
the mainboard.
Ø
The Choice: 4 or 8.
Содержание MV43VN
Страница 1: ...MV43VN Pentium 4 Processor Based DDR SDR MAIN BOARD User s Manual ...
Страница 23: ... 19 5 Internal speaker header SPK1 Step 9 Connect the Power Supply 1 System power connectors ATX2 ATX1 SPK1 ...
Страница 24: ... 20 Step 10 Install Add on Cards in Expansion Slots 1 Accelerated Graphics Port AGP Card 2 PCI Card 3 CNR Card ...