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Timing Diagrams
288       
NS7520 Hardware Reference, Rev. D 03/2006
SDRAM load mode
SDRAM refresh
prechg nop load
3535
343434
3434
3434
343434
2727
op code
BCLK
CS[4:0]*
CAS3* (RAS)
CAS2* (CAS)
CAS1* (WE)
CAS0* (A10/AP)
A[13:0]
prechg inhibit refresh
34
3434
3434
343434
27272727
BCLK
CS[4:0]*
CAS3* (RAS)
CAS2* (CAS)
CAS1* (WE)
CAS0* (A10/AP)