Burst (Rcd[1:0] = 01, Cas Latency = 3, Tpc[2:0] = 011); Figure 22.25 Synchronous Dram Normal Read Bus Cycle: Act + Read Commands, Burst (Rcd[1:0] = 01, Cas Latency = 3) - Hitachi SH7750 Hardware Manual

Sh7750 series superh risc engine
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CKIO
BANK
Precharge-sel
Address
RD/
DQMn
D63–D0
(read)
D63–D0
(write)
DACKn
(SA: IO ← memory)
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,
Tr
Trw
Tc1
t
AD
Row
t
t
AD
RWD
Row
H/L
t
RWD
Row
c0
t
CSD
t
RWD
t
t
RASD
RASD
t
t
CASD2
CASD2
t
DQMD
t
WDD
t
DACD
Burst (RCD[1:0] = 01, CAS Latency = 3)
Tc2
Tc3
Tc4/Td1
t
CASD2
t
RDS
d0
t
BSD
t
DACD
Rev. 6.0, 07/02, page 887 of 986
Td3
Td4
Td2
t
t
t
DQMD
t
RDH
d1
d2
d3
t
BSD
t
AD
CSD
RWD
t
WDD
t
DACD

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