Sdram_read_samebank_diffrow -30, Sdram_read_samebank_samerow -30 – Intel PXA255 User Manual
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Intel® PXA255 Processor Developer’s Manual
Memory Controller
Figure 6-7. SDRAM_read_samebank_diffrow
Figure 6-8. SDRAM_read_samebank_samerow
CL
CL
tRCD
tRP
tRCD
tRAS
tRP
CL
CL
tRCD
tRAS
tRCD
row
col
0
1
2
3
0000
tRP = 2 clks
tRAS = 7 clks
tRCD = 2 clks
CL = 2 clks
bank
row
4
5
6
7
col
0000
0ns
50ns
100ns
150ns
SDCLK
nSDCS
MA[24:0]
nSDRAS
nSDCAS
nWE
DATA
DQM[3:0]
CL
CL
CL
CL
tRCD
tRCD
tRP
tRP
bank
row
col
0
1
2
3
0000
tRP = 2 clks
tRAS = 5 clks
tRCD = 2 clks
CL = 2 clks
col
4
5
6
7
0ns
50ns
100ns
SDCLK
nSDCS
MA[24:0]
nSDRAS
nSDCAS
nWE
DATA
DQM[3:0]