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Intel i960 Series User Manual page 75

For cyclone and pci-sdk evaluation platforms
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Assert /REF
/REPEND
Assert /REF
Assert /REF. /RAS
Assert /REF. /RAS
Assert /REF. /RAS
Figure 4-4. DRAM State Machine
THEORY OF OPERATION
Precharge
Precharge
Precharge/Idle
/ADS * seldram *(PF1 + PF2 + PF3)
Assert RAS*
Assert RAS*
Assert CASEN*
If /(PF3 * /W_R)
assert INCBANK*
/W_R * (PF2 + PF3)
Assert RAS*
Assert CASEN*
Assert INCBANK*
Assert RAS*
If /W_R assert CASEN*
If /W_R * /(PF2 + PF3)
assert INCBANK*
/BLAST * PF3 * /W_R
/BLAST * PF0
BLAST*/W_R*PF3
BLAST*/W_R*PF2
BLAST*W_R
4-9

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