TYAN S3970, Manual

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69
3.9.1 – North Bridge Chipset Configuration Sub-Menu
This menu gives options for customizing memory & Hypertransport settings.
Select a menu by highlighting it using the Arrow (
á
/
â
) keys and pressing Enter.
The settings are described on the following pages.
BIOS Setup Utility
Main Advanced PCI/PnP Boot Security Chipset Exit
NorthBridge Chipset Configuration
4
Memory Configuration
4
ECC Configuration
4
IOMMU Option Configuration
Memory CLK
CAS latency (Tcl)
RAS/CAS Delay (Trcd)
Min Active RAS (Tras)
Row Precharge Time (Trp)
RAS/RAS Delay (Trrd)
Row Cycle (Trc)
Asynchronous Latency
:XXX MHz
:XX
:X CLK
:X CLK
:X CLK
:X CLK
:XX CLK
:X ns
← →
Select Screen
↑↓
Select Item
Enter Go to Sub Screen
F1 General Help
F10 Save and Exit
ESC Exit
Feature Option Description
NorthBridge Chipset Configuration
Memory CLK Read only
It shows the clock frequency of the
installed SDRAM.
CAS Latency (Tcl) Read only
This controls the timing delay (in clock
cycles) before SDRAM starts a read
command after receiving it.
RAS/CAS Delay (Trcd) Read only
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.