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| HD6417750 Datasheet, PDF (939/1039 Pages) Renesas Technology Corp – SuperH RISC engine | |||
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CKIO
BANK
Precharge-sel
Address
RD/
DQMn
D63âD0
(read)
D63âD0
(write)
Tr
Trw
Tc1
Tc2
Tc3 Tc4/Td1 Td2
Td3
Td4
tAD
Row
tRWD
Row
tRWD
Row
tCSD
tAD
H/L
c0
tRWD
tRASD tRASD
tAD
tCSD
tRWD
tCASD2 tCASD2
tCASD2
tDQMD
tDQMD
tWDD
tRDS
tRDH
d0
d1
d2
d3
tWDD
tBSD tBSD
DACKn
(SA: IO â memory)
tDACD
tDACD
tDACD
Notes: IO: DACK device
SA: Single address DMA transfer
DA: Dual address DMA transfer
DACK set to active-high
Figure 22.25 Synchronous DRAM Normal Read Bus Cycle: ACT + READ Commands,
Burst (RCD[1:0] = 01, CAS Latency = 3)
Rev. 6.0, 07/02, page 887 of 986
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