Advantech PCA-6190, User Manual

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PCA-6190 User’s Manual 38
3.5 Advanced Chipset Features
By choosing the “Advanced Chipset Features” option from the “Initial
Setup Screen” menu, the screen below will be displayed. This sample
screen contains the manufacturer’s default values for the PCA-6190, as
shown in Figure 3-4:
3.5.1 DRAM Timing Selectable
This item allows you to control the DRAM speed. The selections are
"Manual" or "By SPD".
3.5.2 CAS Latency Time
When the DRAM Timing Selectable is set to [Manual], this field is
adjustable. The category controls the CAS latency, which determines the
time interval between SDRAM starting a read command and receiving it.
Setting options: [3T], [4T], [5T], [Auto].
Figure 3.4: Advanced chipset features screen
Note: DRAM default timings have been carefully cho-
sen and should ONLY be changed if data is
being lost. Please first contact technical sup-
port.