PD488588FF Datasheet, PDF (17/79 Pages) Elpida Memory – 288M bits Direct Rambus DRAM for High Performance Solution

µPD488588FF-C80-40
Table 6-1 ROW-to-ROW Packet Interaction - Rules
Case # ROPa Da Ba Ra ROPb Db Bb
Rb tRRDELAY
Example
RR1 ACT Da Ba Ra ACT /= Da xxxx
x..x tPACKET
Figure 10-2
RR2 ACT Da Ba Ra ACT == Da /= {Ba, Ba+1, Ba-1} x..x tRR
Figure 10-2
RR3 ACT Da Ba Ra ACT == Da == {Ba+1, Ba-1}
x..x tRC - illegal unless PRER to Ba / Ba+1 / Ba-1 Figure 10-1
RR4 ACT Da Ba Ra ACT == Da == {Ba}
x..x tRC - illegal unless PRER to Ba / Ba+1 / Ba-1 Figure 10-1
RR5 ACT Da Ba Ra PRER /= Da xxxx
x..x tPACKET
Figure 10-2
RR6 ACT Da Ba Ra PRER == Da /= {Ba, Ba+1, Ba-1} x..x tPACKET
Figure 10-2
RR7 ACT Da Ba Ra PRER == Da == {Ba+1, Ba-1}
x..x tRAS
Figure 10-1
RR8 ACT Da Ba Ra PRER == Da == {Ba}
x..x tRAS
Figure 13-1
RR9 PRER Da Ba Ra ACT /= Da xxxx
x..x tPACKET
Figure 10-3
RR10 PRER Da Ba Ra ACT == Da /= {Ba, Ba+-1, Ba+-2} x..x tPACKET
Figure 10-3
RR10a PRER Da Ba Ra ACT == Da == {Ba+2}
x..x tPACKET/tRP if Ba+1 is precharged/activated.
RR10b PRER Da Ba Ra ACT == Da == {Ba-2}
x..x tPACKET/tRP if Ba-1 is precharged/activated.
RR11 PRER Da Ba Ra ACT == Da == {Ba+1, Ba-1}
x..x tRP
Figure 10-1
RR12 PRER Da Ba Ra ACT == Da == {Ba}
x..x tRP
Figure 10-1
RR13 PRER Da Ba Ra PRER /= Da xxxx
x..x tPACKET
Figure 10-3
RR14 PRER Da Ba Ra PRER == Da /= {Ba, Ba+1, Ba-1} x..x tPP
Figure 10-3
RR15 PRER Da Ba Ra PRER == Da == {Ba+1, Ba-1}
x..x tPP
Figure 10-3
RR16 PRER Da Ba Ra PRER == Da == {Ba}
x..x tPP
Figure 10-3
Data Sheet E0251N20 (Ver. 2.0)
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