PD488588 데이터 시트보기 (PDF) - Elpida Memory, Inc

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PD488588

288M bits Direct Rambus DRAM

Elpida Memory, Inc 

µPD488588

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 E0039N30 (Ver. 3.0)

17

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