Sdram_Read_Samebank_Diffrow; Sdram_Read_Samebank_Samerow - Intel PXA255 Developer's Manual

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