Advantech PCA-6180 Series, Руководство пользователя

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PCA-6180 User’s Manual
Figure 3-5: Advanced chipset features screen
3.5.1 SDRAM CAS Latency Time
This controls the latency between SDRAM read command and the
time that the data actually becomes available. Leave this on the
default setting.
3.5.2 SDRAM Cycle Time Tras/Trc
This selects the number of SCLKs for an access cycle.
3.5.3 SDRAM RAS-to-CAS Delay
This controls the latency between SDRAM active command and the
read/write command. Leave this on the default setting.
3.5.4 SDRAM RAS Precharge Time
This controls the idle clocks after issuing a precharge command to
SDRAM. Leave this on the default setting.