168
In burst access in RAS down mode, the settings of bits ICIS1, ICIS0, and IDLC are valid and an
idle cycle is inserted. The timing in this case is illustrated in figures 4.48 and 4.49.
T
p
Address bus
ø
RD
RAS
UCAS
,
LCAS
External read
Idle cycle
Data bus
T
r
T
c1
T
c2
T
1
DRAM space read
DRAM space read
T
2
T
c2
T
3
T
i
T
c1
Figure 4.48 Example of Idle Cycle Operation in RAS Down Mode (1)
(Consecutive Reads in Different Areas) (IDLC = 0, RAST = 0, CAST = 0)
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